Portable battery-powered megaphones.

Bibliographic Details
Corporate Author:	United States. Federal Aviation Administration
Format:	Government Document eBook
Language:	English
Published:	[Washington, D.C.] : Federal Aviation Administration, [1966]
Series:	Advisory circular ; AC no. 121-6
Subjects:	Megaphones > Certification > United States. Airplanes > Equipment and supplies > Certification > United States.
Online Access:	https://purl.fdlp.gov/GPO/LPS109796

Description
Item Description:	Title from PDF caption (viewed Mar. 5, 2009). "l/5/66." Electronic resource.
Physical Description:	1 page : digital, PDF file.
Format:	Mode of access: Internet at the FAA web site. Address as of 3/5/09: http://www.airweb.faa.gov/Regulatory%5Fand%5FGuidance%5FLibrary/rgAdvisoryCircular.nsf/0/48617be49343eea1862569bc0057d246/$FILE/ac121-6.pdf ; current access available via PURL.