Operating procedures for airport traffic control towers (ATCT) that are not operated by, or under contract with, the United States (non-federal).
Series: Advisory circular -- AC no. 90-93A.
Publisher: U.S. Dept. of Transportation, Federal Aviation Administration; [For sale by the U.S. G.P.O., Supt. of Docs.
Published: 1999
Place of publication: [Washington, D.C.] (800 Independence Ave., S.W., Washington 20591)
Language: eng
Subjects: Air traffic control -- United States.
Notes: Caption title.

"AC 90-81, Operating procedures for airport traffic control towers (ATCT) that are not operated by, or under contract with, the United States (non-federal), dated July 19, 1993, is cancelled"--P. [1].

Shipping list no.: 2000-0103-P.

"11/15/99."

Includes bibliographical references (p. [1]).