This CANADIAN CAR & FOUNDRY HARVARD MK IV airframe/engine combination has 0 current type-applicable Airworthiness Directives (0 airframe, 0 engine) and 0 historical. AD applicability is type-based — compliance status for N421QB must be verified against the aircraft maintenance logbooks.
Search FAA DRS for applicable ADs →N421QB is one of 53 CANADIAN CAR & FOUNDRY HARVARD MK IV aircraft on the U.S. registry · fleet median year 1952.
No NTSB accident or incident records found for N421QB in the NTSB aviation accident database.
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