Aircraft History |
57-2611 | |||
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| 1962-10 | Piasecki H-21B Vertol V-42A, cn B-168, ff:? ordered by USAF as H-21B 57-2611, but retained by Vertol as H-21D, for gas turbine engine tests, 1958-1960. Single Wright R-1820 Cyclone engine replaced by two General Electric T-58 gas turbines. Upon test completion, reverted to piston engine and del USAF as UH-21B, 57-2611, Oct62.  | ||
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