The switch from pusher to tractor was made to overcome LTE at high DAs (due to the impact of MR downwash on the TR). The switch was introduced on the HH-1H and retained for late-model UH-1Hs (and 205A-1s, as shown in the photo above), plus the Huey II and 210. Fuji-built 204B-2s also used the tractor tail rotor.
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