Kaman HH-43B sets world altitude record (Class E.1 with 1000 kg)
Thursday, May 25, 1961
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Description
As of 25 May 1961, the HH-43B had been recognized for a record 26369 ft (8037 kg) altitude record with a 1000 kg payload. Source: Alex, Ralph P. "Helicopters from 'A to Z', Part III". American Helicopter Society Newsletter, Vol. 7, 1961. Page 5.
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