Airplane Crash - Near Adler, Washington 03/18/1939

Details of airplane crash/ shootdown - Near Adler, Washington


Date03/18/1939
LocationNear Adler, Washington
OperatorBoeing Aircraft Company
Flight #-
RouteTest flight
TypeBoeing 307 Stratoliner
RegistrationNX19901
Cn/In1994
Aboard10
Fatalities10
Ground0
SummaryThe aircraft crashed after the tail broke off. Dutch engineer A.G. von Baumhauer among those killed. He was a famous helicopter pioneer who first came up with the tail rotor/main rotor configuration which is in use today. Strructural failure of the wings and horizontal tail surfaces due t o the imposition of loads thereon in excess of those for which they were designed, the failure occurring in an abrupt pull-out from a dive following recovery from an inadvertent spin.

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