SECURITIES AND EXCHANGE COMMISSION
Washington, D.C.
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FORM 10-K
-----------------------------------

(Mark One)
X

Annual Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 (Fee Required)

For the fiscal year ended April 30, 2004

Transition Report Pursuant to Section 13 or 15(d) of the Security Exchange Act of 1934 (No Fee Required)

For the Transition Period from __________ to __________.

Commission File Number 0-1678

BUTLER NATIONAL CORPORATION
(Exact name of Registrant as specified in its charter)

Kansas
(State of Incorporation)

41-0834293
(I.R.S. Employer Identification No.)

19920 West 161st Street, Olathe, Kansas 66062
(Address of Principal Executive Office)(Zip Code)

Registrant's telephone number, including area code: (913) 780-9595

Securities registered pursuant to Section 12(b) of the Act: None

Securities registered pursuant to Section 12(g) of the Act:

Common Stock $.01 Par Value
(Title of Class)

Indicate by check mark whether the Registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding twelve months and (2) has been subject to such filing requirements for the past ninety days: Yes X No ____

Indicate by check mark if disclosure of delinquent filers pursuant to Item 405 of Regulation S-K is not contained herein, and will not be contained herein, and will not be contained, to the best of registrant's knowledge, in definitive proxy or information statements incorporated by reference in Part III of this Form 10-K or any amendment to this Form 10-K. [ ]

Indicate by check mark whether the registrant is an accelerated filer (as defined in Exchange Act Rule 12b-2). Yes___ No X

The aggregate market value of the voting stock held by nonaffiliates of the Registrant was approximately $15,633,519 at July 9, 2004, when the average bid and asked prices of such stock was $0.48.

The number of shares outstanding of the Registrant's Common Stock, $0.01 par value, as of July 9, 2004, was 40,075,871 shares.

DOCUMENTS INCORPORATED BY REFERENCE: NONE

This Form 10-K consists of 54 pages (including exhibits). The index to exhibits is set forth on pages 24 -26.

PART I

Item 1. BUSINESS

Forward Looking Information

The information set forth below includes "forward-looking" information as outlined in the Private Securities Litigation Reform Act of 1995. The Cautionary Statements, filed by the us as Exhibit 99 to this Form 10-K, are incorporated herein by reference and you are specifically referred to such Cautionary Statements for a discussion of factors which could affect our operations and forward-looking statements contained herein.

Controls and Procedures

We maintain a set of disclosure controls and procedures and internal controls designed to ensure that information required to be disclosed in our filings under the Securities Exchange Act of 1934 is recorded, processed, summarized and reported within the time periods specified in the Securities and Exchange Commission's rules and forms. Our principal executive and financial officers have evaluated our disclosure controls and procedures within 90 days prior to the filing of this annual Report on Form 10-K and have determined that such disclosure controls and procedures are effective.

Subsequent to our evaluation, there were no significant changes in internal controls or other factors that could significantly affect internal controls, including any corrective actions with regard to significant deficiencies and material weaknesses.

General

Butler National Corporation (the "Company" or "BNC") is a Kansas corporation formed in 1960, with corporate headquarters at 19920 West 161st Street, Olathe, Kansas 66062.

Current Activities. Our current product lines and services include:

Assets as of April 30, 2004 and Net Revenues for the year ended April 30, 2004.

Industry Segment

Assets

Revenue

Aircraft Modifications

38.2%

55.4%

Aircraft

20.6%

0.0%

Avionics

9.6%

17.3%

Gaming

16.7%

11.4%

Monitoring Services

1.4%

11.1%

Corporate / Professional Services

13.5%

4.8%

Regulations

Regulation Under Federal Aviation Administration: Our Avionics and Modifications segments are subject to regulation by the Federal Aviation Administration ("FAA"). We manufacture products and parts under FAA Parts Manufacturing Authority (PMA) requiring qualification and traceability of all materials and vendors used by us. We make aircraft modifications pursuant to the authority granted by Supplemental Type Certificates issued by the FAA. We repair aircraft parts pursuant to the authority granted by its FAA Authorized Repair Station. Violation of the FAA regulations could be detrimental to our operation in these business segments.

Licensing and Regulation under Indian Law: Before commencing gaming operations (Class II or Class III) on Indian Land, we must obtain the approval of various regulatory entities. Gaming on Indian land is extensively regulated by Federal, State and Tribal governments and authorities. Regulatory changes could limit or otherwise materially affect the types of gaming that may be conducted on Indian Land. All aspects of our proposed business operations on Indian Lands are subject to approval, regulation and oversight by the Bureau of Indian Affairs ("BIA"), the Secretary of the United States Department of the Interior ("Secretary"), and the National Indian Gaming Commission ("NIGC"). Our proposed management of Class III gaming operations are also subject to approval of a Class III Gaming Compact between the Indian Tribe and the respective state. Failure to comply with applicable laws or regulations, whether Federal, State or Tribal, could result in, among other things, the termination of any management agreements which would have a material adverse effect on us. Management agreement terms are also regulated by the IGRA, which restricts initial terms to five years and management fees to 30% of the net profits of the casino, except in certain circumstances where the term may be extended to seven years and the management fee increased to 40%. Management agreements with Indian Tribes will not be approved by the NIGC unless, among other things, background checks of the directors and officers of the manager and its ten largest holders of capital stock have been satisfactorily completed. We will also be required to comply with background checks as specified in Tribal-State Compacts before it can manage gaming operations on Indian land. Background checks by the NIGC may take up to 180 days, and may be extended to 270 days by written notice to the Indian Tribe. There can be no assurance that the we would be successful in obtaining the necessary regulatory approvals for its proposed gaming operations on a timely basis, or at all.

Licensing and Regulation under Kansas Law: Our present and future shareholders are and will continue to be subject to review by regulatory agencies. In connection with the our proposed operation of a Class III Shawnee Tribe casino or a Class III Miami Tribe casino in the territorial boundaries of Kansas, the Company, the appropriate Indian Tribe and the key personnel of all entities may be required to hold Class III licenses approved in the respective state prior to conducting operations. The failure of the Company or the key personnel to obtain or retain a license in these states could have a material adverse effect on the Company or on its ability to obtain or retain Class III licenses in other jurisdictions. Each such State Gaming Agency has broad discretion in granting, renewing and revoking licenses. Obtaining such licenses and approvals will be time consuming and cannot be assured. The State of Kansas has approved pari-mutuel dog and/or horse racing for non-Indian organizations. The S tate of Kansas operates lottery and keno games for the benefit of the State. There is no assurance that a Tribal/State Compact between the Tribes and the State of Kansas can be completed. If the Compact is not approved, there could be a material adverse effect on the our plans for Class III gaming within the territorial boundaries of Kansas.
As a condition to obtaining and maintaining a Class III license, we must submit detailed financial and other reports to the Indian Tribe and the respective regulatory Agency. Any person owning or acquiring 5% or more of the Common Stock of the Company must be found suitable by the Agency, and the Agency has the authority to require a finding of suitability with respect to any shareholder regardless of the percentage of ownership. If found unsuitable by the Agency or the Indian Tribe, the shareholder must offer all of the Ownership Interest held by such shareholder to the Company for cash at the current market bid price less a fifteen percent (15%) administrative charge and the Company must purchase such Interest within ten days of the offer. The shareholder is required to pay all costs of investigation with respect to a determination of his/her suitability. In addition, each member of the board of directors and certain officers of the Company are subject to a finding of suitability by the Agency and the Indian Tribe.

Financial Information about Industry Segments

Information with respect to the our industry segments are found at Note 11 of Notes to Consolidated Financial Statements for the year ended April 30, 2004, located herein at page 46.

Narrative Description of Business

Aircraft Modifications: Our subsidiary, Avcon, modifies business type aircraft in Newton, Kansas. The modifications include aircraft conversion from passenger to freighter configuration, addition of aerial photography capability, stability enhancing modifications for Learjets, and other special mission modifications. Avcon offers aerodynamic and stability improvement products for selected business jet aircraft. Avcon makes these modifications to Company owned aircraft for resale and customer owned aircraft.

Sales of the Aircraft Modifications product line are handled directly through Avcon. Specialty modifications are quoted individually by job. We are geographically located in the marketplace for Aircraft Modifications products. We believe there are two primary competitors (AAR of Oklahoma, and Raisbeck Engineering) in the industry in which the Aircraft Modifications division participates.

The Aircraft Modifications business derives its ability to modify aircraft from the authority granted to it by the Federal Aviation Administration ("FAA"). The FAA grants this authority by issuing a Supplemental Type Certificate ("STC") after a detailed review of the design, engineering and functional documentation, and demonstrated flight evaluation of the modified aircraft. The STC authorizes Avcon to build the required parts and assemblies under FAA Parts Manufacturing Authority ("PMA") and to make the installations on applicable customer-owned aircraft.

Avcon owns over 250 STC's. When the STC is applicable to a multiple number of aircraft it is categorized as a Multiple-Use STC. These multiple-use STC's are considered a major asset of the Company. Some of the Multiple-Use STC's include Reduced Vertical Separation Minimums (RVSM), Beechcraft Extended Door, Learjet AVCON FINS, Learjet Extended Tip Fuel Tanks, Learjet Weight Increase Package and Dassault Falcon 20 Cargo Door.

On May 3, 1996, Avcon received approval from the Federal Aviation Administration for a Supplemental Type Certificate ("STC") (no. ST00432WI) of its AVCON FIN Modification for installation on Learjet Model 35 and 36 Aircraft. FAA pilots thoroughly evaluated the test aircraft, and determined that the fins substantially increase the aerodynamic stability in all flight conditions. The AVCON FIN STC eliminates the operational requirement for Yaw Dampers which are otherwise required in both Learjet models to control adverse yaw tendencies in certain flight conditions, particularly during approach and landing. Learjets equipped with AVCON FINS exhibit the same aerodynamic stability and improved operating efficiency offered on newer Learjet models, while maintaining the outstanding range, speed and load-carrying capabilities that made the Learjet Models 35 and 36 among the most popular Business Jets ever produced. Mounted like the feathers of an arrow on the rear of the aircraft, Learjets equipped with AVCON FIN S have a look much the same as the current production aircraft. This modification will give the Learjets produced in the 1970's and 1980's the look of the 21st century.

During fiscal year 2002, Avcon made application to the FAA for the approval of an STC for the Learjet 20 RX Modification project (including the fins, weight increase, and tip tank extensions) for the Learjet Model 24 and 25 aircraft.

Effective January 2005, the FAA is requiring that all aircraft planning to operate between 29,000 and 41,000 feet within the United States air space be RVSM compliant. RVSM stands for Reduced Vertical Separation Minimums and means that in the future aircraft will be separated by 1,000 feet vertically instead of the current 2,000 feet.

During fiscal year 2003, Avcon made application to the FAA for the approval of the Learjet 20 RVSM MOD (including dual pitot tubes, dual digital altimeters, dual air data computers, autopilot refinements and a standby altimeter) for the Learjet 20 series aircraft.

In April 2004, the FAA issued RVSM Group Approval to Avcon Industries, a wholly owned subsidiary of Butler National Corporation, for its Supplemental Type Certificate Number ST01195WI. This is a joint development project with Bizjet of Tulsa, Oklahoma. To date development costs have been $1,125,244. The Bizjet contribution to date has been $513,237. Avcon supplies RVSM kits to Bizjet.

During fiscal 2002, Avcon received approval of its FAA Authorized Repair Station and is accepting inspection and airframe repair business. The focus of this repair station includes the Learjet model 20 and 30 series, Beechcraft King Air, Cessna turbine engine, Cessna multi-engine piston, and Dassault Falcon 20 aircraft. The Repair Station is a convenience for our customers bringing aircraft in for modification and maintenance. We also use the repair station for maintenance of aircraft purchased for modification and resale.

Aircraft - Acquisition, Modification and Sales: The Company through its Avcon subsidiary actively pursues and purchases airplanes, principally Learjets, modifies the planes and sells the planes directly to customers or receives a broker fee for finding a specific airplane. Also, the Company owned aircraft are sometimes used to prove the design of the STC modifications during the FAA approval process. Upon completion of the STC product, company owned aircraft are offered for sale to Avcon customers and others. We sold a Learjet in fiscal 1999 for $2,100,000 and another in fiscal 2002 for $1,425,000. Customer Learjets and Company Learjets were used in the approval process for the AVCON Learjet series RVSM MOD and are being used for the AVCON LR20 RX MOD. Avcon is currently searching for quality 20 and 30 series Learjets for modification and resale.

Avionics - Switching Units: We have had various agreements with Douglas, McDonnell Douglas and Boeing Long Beach to manufacture and repair airborne switching systems for Boeing McDonnell Douglas and its customers. We subcontract with our wholly owned subsidiary, Butler National Corporation - Tempe, Arizona, (formerly Woodson Avionics, Inc.), for the manufacture and repair of Switching Units. Switching Units are used to switch the presentation to the flight crew from one radio system to another, from one navigational system to another and to switch instruments in the aircraft from one set to another. The Switching Units were designed and have been manufactured since the 1960's to meet Boeing McDonnell Douglas and FAA requirements. Most McDonnell Douglas commercial aircraft are equipped with one or more Butler National Switching Units.

Marketing is accomplished directly between us and Boeing McDonnell Douglas. Competition is minimal. However, sales are directly related to Boeing McDonnell Douglas' production of DC-9, DC-10, DC9/80, MD-80, MD-90, MD-11 and KC-10 tanker aircraft. The Boeing McDonnell Douglas contract was completed in fiscal 2000. The customer stopped aircraft production in the year 2000. The impact on our business will be minimal due to planning on this issue for many years. We have received additional contracts from various repair facilities for these products, which has sustained the switching unit business.

Avionics provides new replacement units and overhaul service directly to the major airlines using the aircraft manufactured by McDonnell Douglas. This part of the Avionics business segment is growing to offset the loss of sales from the original equipment units.

We sell to Boeing McDonnell Douglas on terms of 2% 10 days, net 30 days. This means that the terms offered to this customer represent that if the entire invoice is paid within 10 days then there will be a 2% discount. If not, then the total amount due is payable within 30 days. Most payments have been and continue to be within terms.

We have in the ordinary course of business received purchase orders from the commercial airlines and aircraft avionics upgrade suppliers for products with scheduled shipment dates into the fiscal year 2005. However, should these customers financially reorganize or for some other reason not accept shipment against these orders, we could suffer significant loss of revenue in the avionics division.

Avionics - Classic Aviation Products: Our mission is to provide and support economical products for older aircraft, often referred to as "Classic" aircraft. As a result of more than 40 years in the aircraft switching unit business, we recognize the need to support many aircraft in the last half of their expected service life. We have adopted a business mission that promotes us as a designer and supplier of "Classic Aviation Products". These Classic products are a part of our Avionics business segment. A part of the Classic products are directed to supporting safety of flight for the older aircraft ("Safety Products").

Avionics - Defense Contracting and Electronics: Our Avionics and Modifications Segments supply defense and commercial aviation products to the various agencies of the Department of Defense and the Federal Aviation Administration.  We sell these products directly to the United States and/or to other Department of State approved governments, government contractors and suppliers.

This is both a service and manufacturing oriented business segment.  Engineering design and specialized manufacturing solutions are provided to maintain and update classic military and commercial aviation systems.  In general, we provide our customers the opportunity to update or extend the useful life of products with obsolete components and technology. These products include Gun Control Units (GCU) for the Apache Helicopter and other ordnance products, including the Hangfire Override Modules (HOM) for all Boeing derived Chain-Gun® cannons, and various ordnance-related firing controls, cabling, and test equipment.

We have upgraded the design of the GCU and expect to expand sales of the Butler National upgraded units to maintain the Apache fleet. We have initial firm sales orders for these products. However, our share of the market cannot yet be measured.

Boeing 747 Classic Aircraft: We worked with Honeywell to design the Butler National Transient Suppression Device ("TSD"). The TSD is approved and certified by the Federal Aviation Administration ("FAA") under STC number ST00846SE and is owned, manufactured and marketed by us. We sell TSD's to owners and/or operators of Boeing 747 Classic aircraft with a Honeywell Fuel Quantity Indicating System ("FQIS"). The TSD is one solution to the requirements of AD 98-20-40 issued by the FAA to protect the aircraft fuel tanks from hazardous energy levels introduced through the wiring of the FQIS. The AD was issued as a result of the TWA 800 accident in July 1996. The industry had until November 3, 2001 to comply with AD 98-20-40. All aircraft returned to service after that date must be in compliance.

There are approximately 400 Boeing 747 Classic aircraft with Honeywell FQIS. The actual number of aircraft needing our TSD is hard to estimate because a number of these aircraft will be permanently removed from service, a number will have the FQIS system converted from the Honeywell system to a BF Goodrich digital or Smiths digital system, and a number will be protected by a Boeing/BF Goodrich protection device. We believe that all of the other protection alternatives are more expensive than and not as easy to install as our TSD.

We started shipments of the Butler National Boeing 747 TSD in April 2001. Since November 3, 2001, we have continued to provide TSD protection for the Boeing 747 Classic aircraft being returned to service.

Boeing 737 Classic Aircraft: We designed the Butler National Transient Suppression Device ("TSD") for the Boeing 737 Classic Aircraft. On January 14, 2003, the B737 TSD was approved and certified by the Federal Aviation Administration ("FAA") under STC number ST01160SE. TSD's are sold to the owners and/or operators of Boeing 737 Classic aircraft with an analog Fuel Quantity Indicating System ("FQIS"). The TSD is one solution to the requirements of AD 99-03-04 issued by the FAA to protect the aircraft fuel tanks from hazardous energy levels introduced through the wiring of the FQIS. The AD was issued as a result of the TWA 800 accident in July 1996. The industry had until March 9, 2003 to comply with AD 99-03-04. All aircraft returned to service after that date must be in compliance.

There are approximately 1,000 Boeing 737 Classic aircraft in this market with an analog FQIS. Estimating the volume of Butler National 737 TSD sales is subject to the same contingencies as described above under the Boeing 747 TSD. We believe that all of the other protection alternatives are more expensive than and not as easy to install as our TSD.

We started shipping the Butler National Boeing 737 TSD in February 2003. Since March 9, 2003, we have continued to provide TSD protection for the Boeing 737 Classic aircraft being inspected and returned to service. The majority of these sales are to international customers.

SFAR-88, Fuel System Safety: The FAA issued a Special Federal Aviation Requirement ("SFAR") No. 88 titled "Fuel Tank System Fault Tolerance Evaluation Requirements" applicable to turbine-powered aircraft certified to carry 30 or more passengers or a certified payload capacity of 7,500 pounds or more. We believe that SFAR-88 may open a market for Butler National designed TSD products to many more aircraft than the Boeing 747 and 737 Classics. The initial compliance date for each operator to have a plan for meeting the requirements of the SFAR was December 6, 2002. The second compliance date to have each aircraft fuel system protected was June 7, 2004.

SFAR-88 requires protection for all systems that might provide an ignition source to the aircraft fuel tank system. In general, we believe that this requirement may require protective devices on all aircraft parts using electrical power in the fuel system such as fuel pumps, fuel valves, float switches, etc. To address this market, we have applied to the FAA for an STC for a Ground Fault Interruption device ("GFI") for the Boeing 747 and 737 Classic aircraft. However, we are not actively pursuing the completion of the STC. The Butler National GFI product line will be sensitive to unusual power requirements of the electrical systems related to the fuel system. The FAA has not yet issued the Airworthiness Directives related to the review of the operators' December 2002 plans for meeting the requirements of SFAR-88. We have not yet determined the scope and size of this market.

SFAR-92, Flight Deck Protection (Reseller): As a result of the September 11, 2001 New York City disaster, the FAA issued Special Federal Aviation Regulation 92 ("SFAR 92") and amended existing regulations requiring additional aircraft flight deck protection in compliance with Part 25 of the Federal Aviation Regulations. The regulations required full compliance by Part 25 aircraft operators in the United States by April 9, 2003. International operators are beginning the process of flight deck protection.

On September 17, 2001, we made application to the FAA for approval of two Aircraft Cockpit Shield ("ACS") STCs. One STC is for Boeing 737 series and one is for the Douglas DC 9/MD80 series aircraft. After considerable design and engineering work with the FAA and our customers, we determined the best interest of Butler National would be best served by reconsidering our options on the project. We continue to receive customer inquiries about the ACS. We are negotiating an arrangement with other approved cockpit door providers to resell their products to our international customers. We are not a manufacturer of Flight Deck Protection Products, we are a reseller.

We have additional STC applications on file with the FAA related to the Safety Products group, and are addressing the expected future requirements of SFAR-88/SFAR-92 and related amendments by the Federal Aviation Regulations.

Gaming: BNSC is engaged in the business of providing management services to Indian tribes in connection with the Indian Gaming Regulatory Act of 1988. We have three management agreements; however, the performance of these agreements is contingent upon and subject to approval by the Secretary of Interior, Bureau of Indian Affairs, National Indian Gaming Commission and the appropriate state, if required. Also, we have signed consulting engagement letters with two tribes to study and develop plans for Indian gaming. See Liquidity and Capital Resources, page 16.

The Management Agreement between the Indian tribe (the owner and operator) and Butler National Service Corporation (the manager) is the final approval document issued by the National Indian Gaming Commission ("NIGC") before Indian gaming is authorized. The Management Agreement or Contract is authorized and approved by the NIGC pursuant to the Indian Gaming Regulatory Act of 1988, PL 100-497, 102 Stat. 2467,25 U.S.C. 2701-2721 (sometimes referred to as "IGRA"). Before the Management Agreement is approved by the NIGC, all required contracts with other parties must be approved; including, (a) the compact with the state for Class III gaming, if applicable, (b) compliance with the requirements of the National Environmental Protection Agency ("NEPA"), (c) a Tribal Gaming Ordinance approved by the NIGC, and (d) Indian land ownership or leases, if applicable approved by the Bureau of Indian Affairs ("BIA").

The management consulting engagement letters provide for advances of funds to the Indian tribes by BNSC for professional services, fees, licenses, travel, administrative costs, documentation, procedure manuals, purchases of property and equipment and other costs related to the approval and opening of an establishment. These advances are considered to be a receivable from the Tribe and to be repaid by the Tribe from the funding to open the enterprise. The ability to collect the funds related to these advances depends upon the opening of the establishment or in the alternative the liquidation of the inventory and receivable accumulated in the event the establishment is not opened. However, if the collection and/or liquidation efforts are not successful, BNSC may suffer a significant loss of asset value. See Liquidity and Capital Resources, page 16.

Butler National Service Corporation is in the process of maintaining and obtaining the required licenses for the opening and operation of its existing and potential gaming establishments. BNSC follows the law and regulations of the Indian Gaming Regulatory Act of 1988 and the state laws as they may apply. At this time, BNSC does not foresee any substantial risks associated with maintaining and obtaining any required licenses needed to assist the Indian tribes.

During fiscal 1997, we received approval by the National Indian Gaming Commission of the management agreement between the Miami Tribe of Oklahoma, the Modoc Tribe of Oklahoma and our subsidiary, Butler National Service Corporation (BNSC), to construct and manage a Class II (High Stakes Bingo) and Class III (Off-Track Betting) establishment. Construction of this project, known as the STABLES, was completed and opened in September 1998.

The services that we provide include consulting and construction management for the Tribes. We provided the necessary funds to construct the facilities and have been repaid. During the initial 5 year contract we received a 30% share of the profits for our management services. The initial management agreement was to expire in September 2003. The Miami and the Modoc Tribes and BNSC agreed to amend the agreement to extend the expiration date through September 2008 and to reduce the management fee from 30% to 20% of the profits beginning in October 2003. The amendment to the agreement was subject to approval and approved by the NIGC.

The Princess Maria Casino, an Indian gaming establishment, started construction in 1999. The Management Agreement between the Miami Tribe (the owner and operator) and Butler National Service Corporation (the Manager) originally filed in 1992 was approved January 7, 2000. On October 4, 1999, the State of Kansas challenged the NIGC's and the BIA's determination of Indian land. The United States District Court remanded the challenge to the NIGC that requested a second opinion from the BIA which was unfavorable. The NIGC has not responded. However, the Miami Tribe expects to eventually receive a favorable determination. There can be no assurance that the Indian land will be determined "suitable for Indian gaming" under IGRA.

The Shawnee 206 Casino, an Indian gaming establishment, is being considered under the terms of a 1992 consulting agreement between the Shawnee Tribe, the land owner members of the Shawnee Tribe and Butler National Service Corporation. There can be no assurance that the Indian land will be determined "suitable for Indian gaming" under IGRA.

We have other consulting agreements with other tribes and an NIGC approved Management Agreement with the Modoc Tribe for casino construction and openings scheduled after the opening of the Princess Maria and the Shawnee 206.

The risk associated with advances of funds for assets and services on behalf of the tribes under the consulting agreements is that a Management Agreement will not be approved and the liquidation of the assets and related services does not recover enough funds to cover the advances. We have been involved in this business segment since 1991 and have experienced significant project slow downs and holds but have not had any project stopping determinations by the federal courts or the regulatory agencies. All Management Agreements submitted for approval have been approved by the NIGC. There can be no assurance that the current management agreements will continue in force, future management agreements will be approved and that Congress will not outlaw Indian gaming. Should any of these events occur, we would choose alternative uses of the Indian land in cooperation with the Tribes to recover the advances to the Tribes. There is no assurance that all of the advances could be recovered.

Gaming Accountable to Kansans (GATK): During the 2003 Kansas legislative session, we proposed to the Governor, the Kansas Senate and the Kansas House the possibility of state owned casino gaming. The Senate Ways and Means Committee introduced Senate Bill No. 283 in support of state owned casino gaming. The proposed model is structured like the Indian gaming model placing the State of Kansas in the same sovereign position as an Indian Tribe. The state would receive a minimum of 70% of the profits and the management would be limited to 30%. Senate Bill No. 283 was not moved out of committee in the 2004 Kansas legislative session. We expect legislation regarding the state owned concept for gaming to be reconsidered in Kansas in the 2005 session. We plan to propose to be the manager of one or more of the GATK casinos. However, there is no assurance that the State of Kansas will adopt the appropriate legislation or that BNSC will be selected as the manager. According to the current news rep orts, the State of Kansas and Governors office, currently support Indian gaming by the four Indian tribes operating gaming facilities within the boundaries of the State of Kansas.

Services - SCADA Systems and Monitoring Services: BNS is engaged in the sale of monitoring and control equipment and the sale of monitoring services for water and wastewater remote pumping stations through electronic surveillance by radio or telephone. BNS contracts with government and private owners of water and wastewater pumping stations to provide both monitoring and preventive maintenance services for our customers.
A high percentage of BNS business comes from municipally owned pumping stations. BNS is currently soliciting business only in Florida. While we have exposure to competitive forces in the monitoring and preventive maintenance business, management believes the competition is limited in the Florida area.

Corporate / Professional Services: We provide as a management service licensed architectural services through our subsidiary, BCS Design, Inc. These services include commercial and industrial building design and graphic representation.

Raw Materials: Raw materials used in our products are currently available from several sources. Certain components, used in the manufacture of the Switching Units and RVSM modifications, are long lead time components and are single sourced. There is some risk that these components would no longer be available and cause production delays.

Patents: There are no patents, trademarks, licenses, franchises, or concessions held by us that need to be held to do business other than the FAA, PMA and Repair Station licenses. However, we maintain certain airframe alteration certificates, commonly referred to as Supplemental Type Certificates ("STC's"), issued to us by the FAA, for the Aircraft Modification and Avionics businesses. The STC, PMA and Repair Station licenses are not patents or trademarks. The FAA will issue an STC to anyone, provided that the person or entity documents and demonstrates to the FAA that a change to an aircraft configuration does not endanger the safety of flight. The PMA and Repair Station licenses are available to any person or entity, provided that the person or entity maintains the appropriate documentation and follows the appropriate manufacturing, repair and/or service procedures. The FAA requires the aircraft owner to have the STC document in the aircraft log after each modification is complete.

Seasonality: Our business is generally not seasonal. Demand for the Falcon 20 cargo aircraft modifications is related to seasonal activity of the automotive industry in the United States. Many of these modified aircraft are used to carry automotive parts to automobile manufacturing facilities. The peak modification demand occurs in late spring and early summer. Peak usage of the modified aircraft is from June to December. Future changes in the automotive industry could result in the fluctuation of revenues at the Aircraft Modifications division.

Customer Arrangements: Most of our products are custom-made. Except in isolated situations no special inventory-storage arrangements, merchandise return and allowance policies, or extended payment practices are involved in our business. We are not dependent upon any single customer except for Switching Units. Switching Units are sold to Boeing McDonnell Douglas and Douglas Aircraft Company customers. We have required deposits from our customers for aircraft modification production schedule dates. We generally collect full payment for services before the modified aircraft are released to the customer.

Backlog: Our backlog as of April 30, 2004, 2003, and 2002, was as follows:

Industry Segment

2004

2003

2002

Aircraft Modifications

7,360,200

1,059,000

1,344,800

Avionics

2,492,800

1,242,075

2,123,700

Services - Monitoring Services

1,220,700

1,749,354

2,283,100

Corporate / Professional Services

382,200

398,071

15,200

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--------------

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Total backlog

$11,455,900

$4,448,500

$5,766,800

Our backlog as of July 9, 2004 totaled $11,354,700; consisting of $7,712,800, $2,362,900, $1,041,800 and $237,200 respectively, for Aircraft Modifications, Avionics, Monitoring Services, and Corporate / Professional Services The backlog includes firm pending and contract orders, which may not be completed within the next fiscal year. Backlog that we expect not to be delivered within the next fiscal year totals $587,500; consisting of $0, $337,500, $250,000, and $0. This is standard for the industry in which modifications services and related contracts may take several months or years to complete. Such actions force backlog as additional customers request modifications, but must wait for other projects to be completed. There can be no assurance that all orders will be completed or that some may ever commence.
Employees: We employed 71 employees on April 30, 2004 compared to 58 employees on April 30, 2003, and 51 employees on April 30, 2002. As of July 9, 2004, 79 people were employed. None of our employees are subject to any collective bargaining agreements.
Financial Information about Foreign and Domestic Operations, and Export Sales: Information with respect to Domestic Operations may be found at Note 11 of Notes to Consolidated Financial Statements for the year ended April 30, 2004 located herein at page 46. There are no foreign operations. Title passes on product sales to the customer in the USA.

Item 2. PROPERTIES

Our corporate headquarters are located in a 9,000 square foot owned facility for office and storage space at 19920 West 161st Street, in Olathe, Kansas. Our Aircraft Certification Center is located in a 1,000 square foot leased facility at New Century Airport in Olathe, Kansas. The facilities are adequate for current and anticipated operations.

Our Company's Aircraft Modifications Division is located at the municipal airport in Newton, Kansas, in facilities occupied at an annual rent of $67,297. The lease is on a month-to-month term. The Newton Airport Board is in the process of extending the lease through January 31, 2006. These facilities are adequate for current and anticipated operations.

Our wholly owned subsidiary, Butler National Services, Inc. has its principal offices in Ft. Lauderdale, Florida, in facilities occupied under a three-year lease ending March 31, 2005. The annual rental is approximately $33,328 for fiscal year 2004. The facilities are adequate for current and anticipated operations.

Our wholly owned subsidiary, Butler National Corporation - Tempe, Arizona (formerly Woodson Avionics, Inc.), has its principal offices and manufacturing operations in Tempe, Arizona. We rent, with an option to buy, 16,110 square feet of space for $6,000 per month. The lease expires November 30, 2004. The facilities are adequate for current and anticipated operations.

Item 3. LEGAL PROCEEDINGS

A lawsuit was filed in the United States District Court for the District of Kansas by the State of Kansas against us, the United States, the Business Committee members of the Miami Tribe and others on October 14, 1999, challenging the determination by the NIGC and the United States District Court for the District of Kansas that the Miami Princess Maria Reserve No. 35 is Indian Land. The State of Kansas requested an order by the Court preventing further development of gaming on the Indian land.

The question in the case has been remanded to the NIGC for further review. The BIA has issued a negative opinion concerning jurisdiction over the land. The NIGC has not made a further determination on the question. The Miami Tribe expects to eventually receive a favorable determination by the United States District Court for the District of Kansas. We cannot reliably predict the outcome of the case.

We are involved in a lawsuit with a former employee. It is management's position that we will defend the claim vigorously. We cannot reliably predict the outcome of this litigation.

As of July 9, 2004, there are no other significant known legal proceedings pending against the Company. We consider all such unknown proceedings, if any, to be ordinary litigation incident to the character of the business. We believe that the resolution of those unknown claims will not, individually or in the aggregate, have a material adverse effect on the financial position, results of operations, or liquidity of the Company.

Item 4. SUBMISSION OF MATTERS TO A VOTE OF SECURITY HOLDERS

We did not submit any matter to a vote of our security holders during the fourth quarter of fiscal 2004.

PART II

Item 5. MARKET FOR THE REGISTRANT'S COMMON STOCK AND RELATED STOCKHOLDER MATTERS

COMMON STOCK (BUKS):

(a) Market Information: We were initially listed in the national over-the-counter market in 1969, under the symbol "BUTL." Effective June 8, 1992, the symbol was changed to 'BLNL.' On February 24, 1994, we were listed on the NASDAQ Small Cap Market under the symbol "BUKS." Our common stock was delisted from the small cap category effective January 20, 1999 and is now quoted in the over-the-counter (OTCBB) category. Approximately fifteen (15) market makers offer and trade the stock. NASDAQ was considering a change from the over-the-counter listing system to the Bulletin Board Exchange (BBX) system but has since discontinued that action in June 2003.

The range of the high and low bid prices per share of the our common stock, for fiscal years 2004 and 2003, as reported by NASDAQ, is set forth below. Such market quotations reflect intra-dealer prices, without retail mark-up, markdown or commissions, and may not necessarily represent actual transactions.

Year Ended
April 30, 2004

Year Ended
April 30, 2003

Low

High

Low

High

First Quarter

$

.180

$

.280

$

.110

$

.270

Second Quarter

$

.210

$

.710

$

.110

$

.250

Third Quarter

$

.300

$

.660

$

.100

$

.190

Fourth Quarter

$

.480

$

.610

$

.170

$

.260

2. Holders: The approximate number of holders of record of the our common stock, as of July 9, 2004, was 2,900.
3. Dividends: We have not paid any cash dividends on its common stock, and the Board of Directors does not expect to declare any cash dividends in the foreseeable future.
   

SECURITIES CONVERTIBLE TO COMMON STOCK:

As of July 9, 2004 there were no Convertible Preferred or Convertible Debenture shares outstanding.

Item 6. SELECTED FINANCIAL DATA

The information set forth below should be read in conjunction with "Management's Discussion and Analysis of Results of Operations and Financial Condition" and with the Consolidated Financial Statements and related Notes included elsewhere in the report.

Year Ended April 30
(In thousands except per share data)

2004

2003

2002

2001

2000

Net Sales

$

10,122

$

6,285

$

9,029

$

6,008

$

4,606

Net Income (Loss)

$

735

$

27

$

1,125

$

(485)

$

(1,136)

Basic Per Share

Net Income (Loss)

$

0.02

$

0.00

$

0.03

$

(0.02)

$

(0.06)

Selected Balance Sheet Information

Total Assets

$

12,666

$

9,247

$

9,539

$

10,607

$

10,272

Long-term Obligations (excluding current maturities)

$

1,528

$

1,660

$

1,635

$

3,254

$

2,940

Cash dividends declared per common share

None

None

None

None

None

Item 7. MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS

Results of Operations

Fiscal 2004 compared to Fiscal 2003
Our sales for fiscal 2004 were $10,121,948, an increase of 61.1% from fiscal 2003 sales of $6,284,828. Discussion of specific changes by operation follows.

Aircraft Modification: Sales from the Aircraft Modifications business segment including modified aircraft increased 110.2% from $2,668,396 in fiscal 2003, to $5,609,744 in 2004. This segment had operating income of $548,107 in 2004, compared to a $191,396 loss in 2003. Included in the operating income are engineering and management charges of $660,918 related to STC development for Lear 20 RVSM STC and other STC development projects.

Avionics: Sales from the Avionics business segment increased 70.7%, from $1,025,222 in fiscal 2003, to $1,749,555 in fiscal 2004. This increase is directly related to the sales of the defense products. Operating profits increased from a $3,194 loss in fiscal 2003 to a gain of $2,566 in fiscal 2004. Management expects this business segment to increase in future years due to the addition of new TSD and defense products.

Services - SCADA Systems and Monitoring Services: Revenue from Monitoring Services decreased from $1,125,106 in fiscal 2003 to $1,121,403 in fiscal 2004, a decrease of 0.3%. During fiscal 2004, we maintained a relatively level volume of long-term contracts with municipalities. Revenue fluctuates due to the introduction of new products and services and the related installations of these products. Our contracts with our two largest customers have been renewed for fiscal 2005. An operating profit of $13,834 in Monitoring Services was recorded in fiscal 2004, compared to a fiscal 2003 profit of $14,997.

We believe the service business of this segment will continue to grow at a moderate rate. This segment has experienced general stability over the past few years and we expect this trend to continue.

Gaming

-General-

We have advanced and invested a total of $4,718,991 in land, land improvements, professional design fees and other consulting and legal costs related to the development of Indian Gaming facilities. Included in these advances and investments are lands and other areas located adjacent to residential developments. We believe that these tracts could be developed and sold for residential and commercial use, other than Indian gaming, if the gaming enterprises do not open. Additional improvements, including access roads, water and sewer services, etc. are planned for these lands. After these improvements, these lands may be sold in small tracts. This would allow us to recover the majority, if not all, of the land investments and other gaming costs.

-Princess Maria Casino-

We have a management agreement with the Miami Tribe to provide management services. On July 9, 1992, the Tribe requested a compact with the State of Kansas for Class III Indian gaming, on Indian land, known as the Maria Christiana Miami Reserve No. 35, located in Miami County, Kansas. Under the Management Agreement, as approved by the NIGC on January 7, 2000, the Company, as manager, is to receive a 30% share of the profits and reimbursement of development costs.

The Miami Tribe's 1992 compact was the subject of a lawsuit filed in February 1993, in the Federal District Court, by the Miami Tribe, alleging the failure to negotiate a compact in good faith by the State of Kansas. The United States District Court dismissed the Miami Tribe's suit against the State of Kansas, citing the United States Supreme Court's ruling in Seminole v. State of Florida. The Supreme Court ruled that the "failure to negotiate" provision of the IGRA did not allow an Indian tribe to compel a state by litigation to negotiate a compact.

In February 1993, then Kansas Governor Finney requested a determination of the suitability of the Miami Indian land for Indian Gaming, under the IGRA, from the Bureau of Indian Affairs (the "BIA"). In May 1994, the NIGC again requested the same determination. Finally in May 1995, an Associate Solicitor within the BIA issued an opinion letter stating that the Miami Tribe has not established jurisdiction over the Miami land in Kansas. This was the first definitive statement received from the central office of the BIA in three years. The latest opinion is contrary to a September 1994 opinion of the Tulsa Field Solicitor, in an Indian probate, stating that the Miami Tribe has jurisdiction over the Miami Indian land in Kansas. On July 11, 1995, the U.S. Department of Justice issued a letter to the Associate Solicitor expressing concern about the conclusions reached, based upon the analysis of the case.

The Miami Tribe challenged this opinion in Federal Court. To prove and protect the sovereignty of the Miami Tribe, and other Indian tribes, relating to their lands, on April 11, 1996, the Court ruled that the Miami Tribe did not have jurisdiction because the BIA had not approved the Tribal membership of the Princess Maria heirs, at the time the management agreement was submitted; therefore, the Court ordered that the NIGC's determination (that Reserve No. 35 is not "Indian land suitable for gaming", pursuant to IGRA) was affirmed. However, the Court noted in its ruling that nothing precludes the Tribe from resubmitting its management agreement to the NIGC, along with evidence of the current owners' consent, and newly adopted tribal amendments. On February 22, 1996, the BIA approved the Miami Tribe's constitution and the membership of the heirs. The Tribe resubmitted the management agreement. Although the Court noted that the Tribe could resubmit the management agreement, the Court did not pass on whethe r or not a new submission will obtain approval.

The Tribe resubmitted the management agreement and land question to the NIGC in June 1996. In July 1996, the NIGC again requested an opinion from the BIA. On July 23, 1997, the Tribe and the Company were notified that the BIA had again determined that the land was not suitable for gaming, for political policy reasons, without consideration of the membership in the Miami Tribe or recent case law, and the NIGC had to again deny the management agreement. The Tribe filed a suit in the United States District Court in Kansas City, Kansas. On May 15, 1998, the Court determined that the land may be suitable for gaming and remanded the case to the NIGC for the documentation. Therefore, even though the Company and the Tribe believe the BIA and NIGC will agree that the land is "Indian land", and in compliance with all laws and regulations, for a variety of reasons, there is no assurance that the Management Agreement will be approved.

A lawsuit was filed in the United States District Court for the District of Kansas by the State of Kansas against us, the United States, the Business Committee members of the Miami Tribe and others on October 14, 1999, challenging the determination by the NIGC and the United States District Court for the District of Kansas that the Miami Princess Maria Reserve No. 35 was Indian Land. The State of Kansas requested an order by the Court preventing further development of gaming on the Indian land.

The question in the case has been remanded to the NIGC for further review. All of the defendants believe the determination of Indian land is a power reserved for the United States by the Constitution of the United States. The NIGC has not made a further determination on the question. The Miami Tribe expects to eventually receive a favorable determination.

The total advances and investment related to the Princess Maria at April 30, 2004, was $888,802. This amount is net of a reserve of $1,413,511, which represents the current net realizable value of the advanced receivable.

-Stables Bingo and Off-Track Betting-

We have a signed Management Agreement with the Miami and Modoc Tribes. A Class III Indian Gaming Compact for a joint venture by the Miami and Modoc Tribes, both of Oklahoma, has been approved by the State of Oklahoma and by the Assistant Secretary, Bureau of Indian Affairs for the U.S. Department of the Interior. The Compact was published in the Federal Register on February 6, 1996, and is, therefore, deemed effective. The Compact authorizes Class III (Off-Track Betting "OTB") along with Class II (high stakes bingo) at a site within the boundaries of the City of Miami, Oklahoma. The Stables opened in September 1998.

We are providing consulting and construction management services in the development of the facility and manages the joint-venture operation for the tribes. The STABLES facility was expanded in April 2002 to approximately 30,000 square feet and is located directly south of the Modoc Tribal Headquarters building in Miami. The complex contains off-track betting windows, a bingo hall, bar and a restaurant. Our Management Agreement was approved by the NIGC on January 14, 1997. Under the Management Agreement, as approved, our subsidiary, as manager, is to receive a 30% share of the profits and reimbursement of development costs. The current management agreement expired in September 2003. The Miami and the Modoc Tribes and Butler National Service Corporation (BNSC) have agreed to amend the agreement to extend the expiration date through September 2008 and to reduce the management fee from 30% to 20% of the profits beginning in October 2003. At the end of the initial contract term, the Stables had fully paid all advances by Butler National related to the construction of the Stables. The amendment to the agreement was approved by the NIGC.

-Shawnee Reserve No. 206-

In 1992, we signed a consulting agreement and have maintained a business relationship with approximately seventy Indian and non-Indian heirs (the "Owners") of the Newton McNeer Shawnee Reserve No. 206 ("Shawnee Reserve No. 206"). This relationship includes advances for assistance in the defense of the property against adverse possession (by one family member) in exchange for being named the manager of any Indian gaming enterprises that may be established on the land. As a result of our assistance, the Owners are in the process of becoming the undisputed beneficial owners of approximately 72 acres of the Shawnee Reserve No. 206, as ordered by the United States District Court for the District of Kansas. We have advanced funds to purchase an additional 9 acres contiguous to the Indian land providing access.

Shawnee Reserve No. 206 has been a part of the Shawnee Reservation in Kansas Territory since 1831 and was reserved as Indian land and not a part of the State of Kansas, when Kansas became a state in 1861. The Indian land is approximately 25 miles southwest from downtown Kansas City, Missouri.

We maintain a relationship and have a consulting agreement to assist with the proposed establishment. This agreement is signed by the owners and the Shawnee Tribe. The Shawnee Tribe is a federally recognized tribe. The Indian Owners of Shawnee Reserve No. 206 have federal Indian membership cards.

We believe that there is a significant opportunity for Indian gaming on the Shawnee Reserve No. 206. However, none of the above agreements have been approved by the BIA, or the NIGC, or any other regulatory authority. There can be no assurance that these or future agreements will be approved nor that any Indian gaming will ever be established on the Shawnee Reserve, or that we will be the Management Company.

The total advances and investment related to Shawnee Reserve No. 206 at April 30, 2004, was $1,005,248 This amount is net of a reserve of $849,222, which represents the current net realizable value of the advanced receivable.

-Modoc Bingo-

We signed a consulting agreement with the Modoc Tribe on April 21, 1993. As a part of this project, we have a management agreement with the Modoc Tribe to construct and operate an Indian gaming facility on Modoc Reservation lands in Eastern Oklahoma. The Management Agreement was filed with the NIGC on June 7, 1994 for review and approved on July 11, 1997. The Tribe and the Company have not determined a schedule for this project.

The total advances and investment related to the Modoc Tribe at April 30, 2004, was $112,501. This amount is net of a reserve of $373,271, which represents the current net realizable value of the advanced receivable.

Corporate / Professional Services: We provide as a management service licensed architectural services through our subsidiary, BCS Design, Inc. These services include commercial and industrial building design and graphic representation.

Selling, General and Administrative (SG&A): Expenses increased $473,680 or 19.4% in fiscal year 2004. These expenses were $2,910,775, or 28.8% of revenue, in fiscal 2004, and $2,437,095, or 38.8% of revenue in fiscal 2003.

Other Income (Expense): Other expense increased from $119,058 in fiscal 2003 to $162,583 in fiscal 2004.

Fiscal 2003 compared to Fiscal 2002
Our sales for fiscal 2003 were $6,284,828, a decrease of 30.4% from fiscal 2002 sales of $9,028,762. Discussion of specific changes by operation follows.

Aircraft Modification: Sales from the Aircraft Modifications business segment including modified aircraft decreased 37.3% from $4,256,197 in fiscal 2002, to $2,668,396 in 2003. Sales for aircraft repair and refurbishment decreased 6%, from fiscal 2002 to fiscal 2003. This segment had an operating loss of $191,396 in 2003, compared to a $6,992 loss in 2002. Included in the operating losses are corporate engineering and management charges of $240,000 related to STC development for Lear 20 RVSM STC and other STC development projects.

Avionics: Sales from the Avionics business segment decreased 58.9%, from $2,495,547 in fiscal 2002, to $1,025,222 in fiscal 2003. This decrease is directly related to the sales of the Butler National Transient Suppression Device (TSD) for the Boeing 747 Classic aircraft. Sales of switching units to the major OEM customer decreased due to the phase out schedule of this type of aircraft. Operating profits decreased from $640,578 in fiscal 2002 to a loss of $3,194 in fiscal 2003. Management expects this business segment to increase in future years due to the addition of new TSD products and defense products.

Services - SCADA Systems and Monitoring Services: Revenue from Monitoring Services decreased from $1,199,853 in fiscal 2002 to $1,125,106 in fiscal 2003, a decrease of 6.2%. During fiscal 2003, we maintained a relatively level volume of long-term contracts with municipalities. Revenue fluctuates due to the introduction of new products and services and the related installations of these products. Our contracts with its two largest customers have been renewed for fiscal 2004. An operating profit of $14,997 in Monitoring Services was recorded in fiscal 2003, compared to a fiscal 2002 profit of $2,701.

We believe the service business of this segment will continue to grow at a moderate rate. This segment has experienced general stability over the past few years and we expect this trend to continue.

Corporate / Professional Services: We provide as a management service licensed architectural services through our subsidiary, BCS Design, Inc. These services include commercial and industrial building design and graphic representation.

Selling, General and Administrative (SG&A): Expenses decreased $10,424 or 0.4% in fiscal year 2003. These expenses were $2,437,095, or 38.8% of revenue, in fiscal 2003, and $2,447,519, or 27% of revenue in fiscal 2002.

Other Income (Expense): Other expense decreased from $150,872 in fiscal 2002 to $119,058 in fiscal 2003.

Liquidity and Capital Resources

Borrowed funds have been used primarily for working capital. Bank (Industrial State Bank) debt related to the Company's operating line was $269,740 at April 30, 2004, and $380,481 at April 30, 2003.

Our unused line of credit at April 30, 2004 was $230,260. As of July 9, 2004, our unused line of credit was $261,709. Our line of credit is $500,000. The interest rate on our line of credit is prime plus two (with a floor of 7.0%). As of July 9, 2004, the interest rate is 7.0%. We opened a new line of credit at Industrial State Bank on February 10, 2004 at an interest rate of 7.0%. This line of credit is used to support the additional inventory requirements of the RVSM product line. The current debt relating to this line of credit at April 30, 2004 was $1,177,758 and remains the same at July 9, 2004.

We plan to continue using the promissory notes-payable to fund working capital. We believe the extensions will continue and do not anticipate the repayment of these notes in fiscal 2005. The extensions of the promissory notes-payable is consistent with prior years. If the Bank were to demand repayment of all notes-payable we currently do not have enough cash to pay off the notes without materially adversely affecting the financial condition of the Company.

We do not, as of April 30, 2004, have any material commitments for other capital expenditures other than under the terms of the Indian gaming Management Agreements. Depending upon the development schedules, we will need additional funds to complete our currently planned Indian gaming opportunities. We will use current cash available as well as additional funds, for the start up and construction of gaming facilities. We anticipate initially obtaining these funds from internally generated working capital and borrowings. After a few gaming facilities become operational, gaming operations will generate additional working capital for the start up and construction of other gaming facilities. We expect that our start up and construction financing of gaming facilities will be replaced by other financial lenders, long term financing through debt issue, or equity issues.

Analysis of Cash Flow

During fiscal 2004, our cash position increased by $782,659. A majority of the cash flow in fiscal 2004 is due to loan proceeds for the anticipated build up of inventories for RVSM production.

Investing Activities: The $324,565 decrease in the note receivable are payments under the note from the Stables bingo facility. The remaining cash used in investing activities is due to the use of approximately $31,730 related to the development of Indian gaming, approximately $85,860 to the purchase of tooling and equipment for Modifications, Maintenance and Avionics Services and $100,000 for the purchase of an STC.

Financing Activities: The cash used in financing activities resulted in the increase of debt to $1,781,871.

Revenue Recognition

We perform aircraft modifications under fixed-price contracts. Revenues from fixed-price contracts are recognized on the percentage-of- completion method, measured by the direct labor costs incurred compared to total estimated direct labor costs. Revenue is recorded on all other products upon delivery to the customer.

Changing Prices and Inflation

We did not experience any significant pressure from inflation in 2004.

Off-Balance Sheet Arrangements
We do not have any off-balance sheet arrangements.

Tabular Disclosure of Contractual Obligations

Payments Due By Period
(Dollars in thousands)

Contractual Obligations

Total

Less than 1 Year

2 Years fy2006

3 Years fy2007

4 Years fy2008

5 Years fy2009

More than 5 Years

Long-Term Debt Obligations

$

1,969

$

440

$

375

$

555

$

212

$

180

$

207

Capital Lease Obligations

$

1

$

1

$

0

$

0

$

0

$

0

$

0

Operating Lease Obligations

$

73

$

73

$

0

$

0

$

0

$

0

$

0

Purchase Obligations

$

0

$

0

$

0

$

0

$

0

$

0

$

0

Other Long-Term Liabilities Reflected on the Registrant's Balance Sheet Under GAAP

$

0

$

0

$

0

$

0

$

0

$

0

$

0

TOTAL

$

2,043

$

514

$

375

$

555

$

212

$

180

$

207

Item 7(a). QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK

Interest Rate Sensitivity

The table below provides information about our other financial instruments that are sensitive to changes in interest rates including debt obligations.

For debt obligations, the table presents principal cash flows and related weighted average interest rates by expected maturity dates. Weighted average variable rates are based on implied forward rates based upon the rate at the reporting date.

Expected Maturity Date
(Dollars in thousands)

2005

2006

2007

2008

2009

Total

Fair Value

Assets

Note receivable:

$

0

$

0

$

0

$

0

$

0

$

0

$

0

Variable rate
Average interest rate

N/A

N/A

N/A

N/A

N/A

N/A

N/A

Liabilities

Long-term debt:

$

440

$

375

$

555

$

212

$

180

$

1,969

$

1,969

Variable rate
Average interest rate

6.5%

6.5%

6.5%

6.5%

6.5%

6.5%

6.5%

Item 8. FINANCIAL STATEMENTS AND SUPPLEMENTARY DATA

The Financial Statements of the Registrant are set forth on pages 30 through 49 of this report.

Item 9. CHANGES IN AND DISAGREEMENTS ON ACCOUNTING AND FINANCIAL DISCLOSURE

We have had no changes in or disagreements with the accountants.

Item 9A Controls and Procedures

We maintain a set of disclosure controls and procedures and internal controls designed to ensure that information required to be disclosed in our filings under the Securities Exchange Act of 1934 is recorded, processed, summarized and reported within the time periods specified in the Securities and Exchange Commission's rules and forms. Our principal executive and financial officers have evaluated our disclosure controls and procedures within 90 days prior to the filing of this annual Report on Form 10-K and have determined that such disclosure controls and procedures are effective.

Subsequent to our evaluation, there were no significant changes in internal controls or other factors that could significantly affect internal controls, including any corrective actions with regard to significant deficiencies and material weaknesses.

PART III

The names and ages of the directors, their principal occupations for at least the past five years are set forth below, based on information furnished to us by the directors.

Name of Nominee and Director and Age

Served
Since

Principal Occupation for Last Five Years and Other Directorships

Clark D. Stewart
(64)

1989

President of the Company from September 1, 1989 to present. President of Tradewind Systems, Inc. (consulting and computer sales) 1980 to present; Executive Vice President of RO Corporation (manufacturing) 1986 to 1989; President of Tradewind Industries, Inc. (manufacturing) 1979 to 1985.

R. Warren Wagoner
(52)

1986

Chairman of the Board of Directors of the Company since August 30, 1989 and President of the Company from July 26, 1989 to September 1, 1989. Sales Manager of Yamazen Machine Tool, Inc. from March, 1992 to March, 1994; President of Stelco, Inc. (manufacturing) 1987 to 1989; General Manager, AmTech Metal Fabrications, Inc., Grandview, MO 1982 to 1987.

William E. Logan
(66)

1990

Vice President and Treasurer of WH of KC, Inc. (Wendy's franchisee) June, 1984 to present. Vice President and Treasurer of Valley Foods Services, Inc. (wholesale food distributor) June, 1988 to April, 1993. Professional practice as a Certified Public Accountant 1965 to 1984.

William A. Griffith
(57)

1990

Secretary of the Company, President of Griffith and Associates (management consulting) since 1984. Management consultant for Diversified Health Companies (management consulting) from 1986 to 1989 and for Health Pro (health care) from 1984 to 1986. Chief Executive Officer of Southwest Medical Center (hospital) from 1981 to 1984.

David B. Hayden
(58)

1996

Co-owner and President of Kings Avionics, Inc. since 1974 (avionics sales and service). Co-owner of Kings Aviation LLP (aircraft fixed base operation and maintenance) since 1994. Field Engineer for King Radio Corporation (avionics manufacturing) 1966 to 1974.

The executive officers of the Company are elected each year at the annual meeting of the Board of Directors held in conjunction with the annual meeting of shareholders and at special meetings held during the year. The executive officers are as follows:

Name

Age

Position

R. Warren Wagoner

52

Chairman of the Board of Directors

Clark D. Stewart

64

President and Chief Executive Officer

Christopher J. Reedy

38

Vice President

William A. Griffith

57

Secretary

Angela D. Seba

40

Chief Financial Officer

Kathy L. Gorrell

44

Treasurer

Larry W. Franke

60

President of Avcon Industries, Inc., a wholly-owned subsidiary of the Company

Jon C. Fischrupp

64

President of Butler National Services, Inc., a wholly-owned subsidiary of the Company

Jeffrey H. Shinkle

35

President of BCS Design, Inc., a wholly-owned subsidiary of the Company

R. Warren Wagoner was General Manager, Am-Tech Metal Fabrications, Inc. from 1982 to 1987. From 1987 to 1989, Mr. Wagoner was President of Stelco, Inc. Mr. Wagoner was Sales Manager for Yamazen Machine Tool, Inc. from March 1992 to March 1994. Mr. Wagoner was President of the Company from July 26, 1989, to September 1, 1989. He became Chairman of the Board of the Company on August 30, 1989.

Clark D. Stewart was President of Tradewind Industries, Inc., a manufacturing company, from 1979 to 1985. From 1986 to 1989, Mr. Stewart was Executive Vice President of RO Corporation. In 1980, Mr. Stewart became President of Tradewind Systems, Inc. He became President of the Company in September 1989.

Christopher J. Reedy worked for Colantuono & Associates, LLC from 1997 to 2000 in the area of aviation, general business and employment counseling, and from 1995 to 1997 with the Polsinelli, White firm. He was involved in aviation product development and sales with Bendix/King, a division of AlliedSignal, Inc. from 1988 through 1993. Mr. Reedy joined the Company in November 2000.

William A. Griffith was Chief Executive Officer of Southwest Medical Center (hospital) from 1981 to 1984. Mr. Griffith was a management consultant for Health Pro from 1984 to 1986 and for Diversified Health Companies from 1986 to 1989. Mr. Griffith has been President of Griffith and Associates, management consulting, since 1984. Mr. Griffith became Secretary of the Company in 1992.

Angela D. Seba was the controller of A&M products, a subsidiary of First Brands Corporation from 1995 to 1998. From 1998 to 2000 Ms. Seba was a Senior Business Systems Analyst for Black & Veatch of Kansas, the largest privately held engineering firm in the United States. Ms. Seba was the CFO of Peerless Products, Inc. a manufacturer of customized windows from 2000 to 2001. Ms. Seba joined the Company in October 2001.

Kathy L. Gorrell was Assistant Cashier at Weslayan Bank in Houston, Texas from 1983 to 1985 and then at Spring National Bank in Spring, Texas from 1985 to 1987. Ms. Gorrell was a building IT coordinator with the Kansas USD #233 before joining the Company in February 1997 as a special projects coordinator. Ms. Gorrell became Treasurer and Chief Information Officer of the Company in February 1998.

Larry W. Franke was Vice President and General Manager of Kansas City Aviation Center from 1984 to 1992. From 1993 to 1994 he was Vice President of Operations and Sales for Marketlink, an aircraft marketing company. Mr. Franke joined the Company in July 1994 as Director of Marketing and was promoted in August 1995 to Vice President of Operations and Sales. Mr. Franke is currently Vice President of Aircraft Modifications at Avcon.

Jon C. Fischrupp was President of Lauderdale Services, Inc. ("LSI") from June 14, 1978, until May 1, 1986, at which time the Company acquired LSI and he became President of LSI (now known as Butler National Services, Inc.).

Jeffrey H. Shinkle was a Project Manager with Glenn Livingood Penzler Architects from 1992 to 1995 and with Devine de Flon Yaeger Architects from 1995 to 1997. Mr. Shinkle is licensed to practice Architecture in Kansas, Oklahoma, Missouri and Arizona. Mr. Shinkle joined the Company in 1997 and is President of BCS Design, Inc.

Section 16(a) Beneficial Ownership Reporting Compliance

Based solely upon a review of Forms 3 and 4 and amendments thereto furnished to the Company pursuant to Rule 16(a)-3(e) during the most recent fiscal year and Form 5 and amendments thereto furnished to the Company with respect to the most recent fiscal year, the Company believes that no person who at any time during the fiscal year was a director, officer, beneficial owner of more than 10% of any class of equity securities registered pursuant to Section 12 of the Exchange Act failed to file on a timely basis reports required by Section 16(a) of the Exchange Act during the most recent fiscal year or prior fiscal years.

Item 11. EXECUTIVE COMPENSATION

SUMMARY

The following table provides certain summary information concerning compensation paid or accrued by the Company to or on behalf of the Company's Chief Executive Officer and each of the other most highly compensated executive officers of the Company whose salary and bonus exceeded $100,000 (determined as of the end of the last fiscal year) for the fiscal years ended April 30, 2004, 2003 and 2002:

SUMMARY COMPENSATION TABLE

Annual Compensation

Long Term Compensation
Awards Payouts

Name
and Principal Position

Year

Salary
($)

Bonus
($)

Other Annual
Compensation
($)

Restricted
Stock
Award(s)
($)

Securities
UnderlyingOptions
(no.)(1)

LTIP
Payouts
($)

All Other
Compensation
($)

Clark D. Stewart,
President ,CEO and
Director

04
03
02

297,345
287,400
245,589

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325,000
150,000

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Christopher J. Reedy
Vice President