Airworthiness approval of Vertical Navigation (VNAV) Systems for use in the U.S. National Airspace System (NAS) and Alaska.

Bibliographic Details
Corporate Author:	United States. Federal Aviation Administration
Format:	Government Document eBook
Language:	English
Published:	[Washington, D.C.] : U.S. Dept. of Transportation, Federal Aviation Administration, [1988]
Series:	Advisory circular ; AC no. 20-129
Subjects:	Airplanes > Electronic equipment > Certification > United States. Airworthiness certificates > United States.
Online Access:	https://purl.fdlp.gov/GPO/LPS104220

Available Online