This CESSNA 421C airframe/engine combination has 55 current type-applicable Airworthiness Directives (35 airframe, 28 engine) and 8 historical. AD applicability is type-based — compliance status for N21SG must be verified against the aircraft maintenance logbooks.
Search FAA DRS for applicable ADs →N21SG is one of 566 CESSNA 421C aircraft on the U.S. registry · fleet median year 1978.
1 NTSB accident/incident record associated with N21SG — details below.
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