Operational techniques and procedures were established for the UH-1N flight in IFR weather flight conditions and were recommended for inclusion in Section IX of the Flight Manual T.O. 1H-1(U)N-1. Safe flight in IFR weather is possible, but two pilots were recommended as minimum crew due to the pilot workload. The UH-1N was flown in icing conditions with no mechanical defects or gross degradation of handling qualities noted.
UH-1N Instrument Flight, Turbulence, and Icing Tests
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