This BELL 47G-4 airframe/engine combination has 127 current type-applicable Airworthiness Directives (117 airframe, 13 engine) and 3 historical. AD applicability is type-based — compliance status for N1139W must be verified against the aircraft maintenance logbooks.
Search FAA DRS for applicable ADs →N1139W is one of 15 BELL 47G-4 aircraft on the U.S. registry · fleet median year 1964.
1 possible NTSB record match for N1139W — see verification below.
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