Importance of transponder operation and altitude reporting.

Bibliographic Details
Corporate Author:	United States. Federal Aviation Administration
Format:	Government Document eBook
Language:	English
Published:	[Washington, D.C.] : Dept. of Transportation, Federal Aviation Administration, [1977]
Series:	Advisory circular ; AC no. 91-50
Subjects:	Transponders. Airplanes > Radio equipment > Altitudes. Airplanes > Radar > Equipment and supplies > Altitudes.
Online Access:	https://purl.fdlp.gov/GPO/LPS107894

Available Online