Designated alteration station authorization procedures.
Series: Advisory circular -- AC 21.431-1A.
Publisher: U.S. Dept. of Transportation, Federal Aviation Administration
Published: 1986
Place of publication: Washington, D.C
Language: eng
Subjects: Airplanes -- Certification -- United States.
Notes: Caption title.

Shipping list no.: 86-312-P.

"12/19/85."

Cancels AC no. 21.431-1, dated February 8, 1982.