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10-Q - FORM 10-Q - Howmet Aerospace Inc.d897461d10q.htm
EX-32 - EX-32 - Howmet Aerospace Inc.d897461dex32.htm
EX-31 - EX-31 - Howmet Aerospace Inc.d897461dex31.htm
EX-95 - EX-95 - Howmet Aerospace Inc.d897461dex95.htm
EX-12 - EX-12 - Howmet Aerospace Inc.d897461dex12.htm
EX-10.(B) - EX-10.(B) - Howmet Aerospace Inc.d897461dex10b.htm
EX-10.(A) - EX-10.(A) - Howmet Aerospace Inc.d897461dex10a.htm
EXCEL - IDEA: XBRL DOCUMENT - Howmet Aerospace Inc.Financial_Report.xls

Exhibit 15

April 23, 2015

Securities and Exchange Commission

100 F Street, NE

Washington, D.C. 20549

RE: Alcoa Inc.

Commissioners:

We are aware that our report dated April 23, 2015, on our review of interim financial information of Alcoa Inc. and its subsidiaries (Alcoa) for the three-month periods ended March 31, 2015 and 2014 and included in Alcoa’s quarterly report on Form 10-Q for the quarter ended March 31, 2015 is incorporated by reference in its Registration Statements on Form S-3 (No. 333-197371 and 333-201055), Form S-4 (No. 333-203275), and Form S-8 (Nos. 333-32516, 333-106411, 333-128445, 333-146330, 333-153369, 333-155668, 333-159123, 333-168428, 333-170801, 333-182899, and 333-189882).

 

Very truly yours,

/s/ PricewaterhouseCoopers LLP

PricewaterhouseCoopers LLP
Pittsburgh, Pennsylvania