This WILSON HERSCHEL D RV-4 airframe/engine combination has 29 current type-applicable Airworthiness Directives (0 airframe, 34 engine) and 5 historical. AD applicability is type-based — compliance status for N4ZW must be verified against the aircraft maintenance logbooks.
Search FAA DRS for applicable ADs →N4ZW is one of 1 WILSON HERSCHEL D RV-4 aircraft on the U.S. registry · fleet median year 1992.
1 possible NTSB record match for N4ZW — see verification below.
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