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

Description
Item Description:	Title from PDF caption (viewed Jan. 22, 2009). "8/24/77." Electronic resource.
Physical Description:	2 pages : digital, PDF file.
Format:	Mode of access: Internet at the FAA web site. Address as of 1/22/09: http://www.airweb.faa.gov/Regulatory%5Fand%5FGuidance%5FLibrary/rgAdvisoryCircular.nsf/0/276607e86c52126c862569e70077c8d1/$FILE/AC91-50.pdf ; current access available via PURL.