Certification program and modifications made on helicopter to meet requirements for CAA certificate; new and improved CAA certificated H-21 type helicopter is available in three versions; Model 44A for utility passenger cargo operations; Model 44B for commercial passenger service; Model 44C for deluxe executive transport; operating costs; performance and specifications.
Vertol 44 certificated for commercial operation
Am Helicopter
American Helicopter ; 46 , n 6
1957
Aufsatz (Zeitschrift)
Englisch
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SLUB | 1964
|Features of amphibious Vertol Model 44 Helicopter
Engineering Index Backfile | 1958
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NTIS | 1988
|Measurements on Vertol H-21 Helicopter
NTIS | 1968
|Rotorcraft technology at Boeing Vertol: Recent advances
NTRS | 1988
|