UNITED TECHNOLOGIES CORPORATION

One Financial Plaza

Hartford, Connecticut 06103

February 6, 2014

U.S. Securities and Exchange Commission

100 F Street, N.E.

Washington, DC 20549

Re: Notice of Disclosure Filed in Exchange Act Annual Report Under Section 219 of the Iran Threat Reduction and Syria Human Rights Act of 2012 and Section 13(r) of the Exchange Act

Ladies and Gentlemen:

Pursuant to Section 219 of the Iran Threat Reduction and Syria Human Rights Act of 2012 and Section 13(r) of the Securities Exchange Act of 1934, as amended (Exchange Act), notice is hereby provided that United Technologies Corporation has made disclosure pursuant to such provisions in its Annual Report on Form 10-K for the year ended December 31, 2013, which was filed with the U.S. Securities and Exchange Commission on February 6, 2014 (2013 10-K).

As described in the 2013 10-K, in the quarterly period ended on December 31, 2013, there were no activities required to be disclosed by Section 13(r)(1)(D)(iii) of the Exchange Act as transactions or dealings with the government of Iran that have not been specifically authorized by a U.S. federal department or agency.

Respectfully submitted,

UNITED TECHNOLOGIES CORPORATION

By:	/s/ Charles F. Hildebrand
	Charles F. Hildebrand Associate General Counsel and Assistant Secretary