This BELL 47G-3B-1 airframe/engine combination has 123 current type-applicable Airworthiness Directives (117 airframe, 9 engine) and 3 historical. AD applicability is type-based — compliance status for N170HF must be verified against the aircraft maintenance logbooks.
Search FAA DRS for applicable ADs →N170HF is one of 102 BELL 47G-3B-1 aircraft on the U.S. registry · fleet median year 1966.
2 possible NTSB record matches for N170HF — see verification below.
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