Protection of airplane fuel systems against fuel vapor ignition due to lightning.
Series: Advisory circular -- AC no. 20-53A.
Publisher: U.S. Dept. of Transportation, Federal Aviation Administration
Published: 1985
Place of publication: Washington, D.C
Language: eng
Subjects: Airplanes -- Fuel systems -- Protection.; Airplanes -- Fires and fire prevention.; Lightning protection.
Notes: Caption title.

"4/12/85."

Cancels Advisory circular no. 20-53, effective Oct. 6, 1967.