December 5 , 2013

Mr. Paul Gretch

Director

, Office of International Aviation

United States Department of Transportation

12 00 New Jersey Ave. , S. E

. Washington, D.C. 20590

Re: Exemption Authority of US Airways , Inc.

( United States

– Buenos Aires, Arg entina )

(D ated October 11 , 20 1 2 ) (Docket DOT

- OST

- 200 3

- 1 4650 )

Dear Mr. Gretch:

On October 11 , 201 2 , the Department of Tra nsportation (“Department”) issu ed

US Airways, Inc. (“ US Airways ”) exemption authority to provide “[ s ] cheduled foreign air

transpor tation of persons, property and mail between the United States and Buenos

Aires, Argentina and (ii) beyond Buenos Aires to Montevideo, Uruguay.” ( See Notice of

Action Taken, Docket DOT

- OST

- 200 3

- 1465 0 (“Notice”).) In a footnote, the Notice

stated that US A irways would provide this service pursuant to a codeshare arrangement

with United Air Lines, Inc

.

US Airways hereb y advises the Department that it intends to provide service

to/from Buenos Aires, Argentina, pursuant to a codeshare arrangement with Americ an Airlines, Inc. (“AA”), whereby US Airways places its “US” designator code on flights

operated by AA. US Airways plans to commence service following the closing of the

merger of US Airways Group, Inc. with AMR Corp. , at which point US Airways and AA

wil l be owned by the same corporate parent.

Respectfully submitted,

Howard Kass

Vice President

, Legal and Government Affairs

Benjamin T. Slocum

Director , Legal and Government Affairs

Attachment

cc: Service ListCERTIFICATE OF SERVICE

I c ertify that, on December 5 , 2013 , I caused to be served a copy of the foregoing

Letter by email upon those addressees listed below:

urskr@state.gov (Department of State)

esta.rosenberg@dot.gov (Department of Transportation)

brian.hedberg@dot.gov (Depar tment of Transportation)

todd.homan@dot.gov (Department of Transportation)

peter.irvine@dot.gov (Department of Transportation)

laura.remo@dot.gov (Department of Transportation)

brett.kruger@dot.gov (Department of Transportation)

john.allen@faa.gov (Fe deral Aviation Administration)

dan.weiss@united.com (United)

steve.morrissey@united.com (United)

karine.faden@united.com (United)

gmurphy@crowell.com (Counsel for United)

francis.heil@aa.com (American)

robert.wirick@aa.com (American)

sascha.vanderbel len@delta.com (Delta)

jhill@dowlohnes.com (Counsel for JetBlue and Hawaiian)

perkmann@dowlohnes.com (Counsel for JetBlue and Hawaiian)

robert.land@jetblue.com (JetBlue)

msinick@ssd.com (Counsel for Alaska)

jyoung@yklaw.com (Counsel for Spirit)

dkirste in@yklaw.com (Counsel for Spirit)

bob.kneisley@wnco.com (Southwest)

leslie.abbott@wnco.com (Southwest)

ethan.blank@rjet.com (Republic)

robert.cohn@hoganlovells.com (Counsel for Republic)

patrick.rizzi@hoganlovells.com (Counsel for Republic)

john.fred ericksen@suncountry.com (Sun Country)

thomas.ting@suncountry.com (Sun Country)

rpommer@atlasair.com (Atlas)

anita.mosner@hklaw.com (Counsel for UPS)

jennifer.nowak@ hklaw.com (Counsel for UPS)

cefelts@fedex.com (FedEx)

nssparks@fedex.com (FedEx)

kevi n.montgomery@polaraircargo.com (Polar)

_________________________

Benjamin T. Slocum