Airworthiness and operational approval of airborne systems to be used in lieu of a ground proximity warning system(s) (GPWS).
Contributors: United States. Federal Aviation Administration.
Publisher: Dept. of Transportation, Federal Aviation Administration
Published: 1981
Place of publication: Washington, D.C
Language: eng
Subjects: Airplanes -- Airworthiness.; Airworthiness certificates -- United States.
Notes: Caption title.

"Advisory circular."

"FAR guidance material."

"AC 20-112."