§ 330.23
To what address must air carriers send their applications?
(a) You must submit your application, and all required supporting information, in hard copy (not by fax or electronic means) to the following address:
U.S. Department of Transportation, Aviation Relief Desk (X-50), 1200 New Jersey Avenue, SE., Washington, DC 20590.
(b) If your complete application is not sent to the address in paragraph (a) of this section as required in this section, the Department will not accept it.