This HILLER UH-12E airframe/engine combination has 42 current type-applicable Airworthiness Directives (44 airframe, 0 engine) and 2 historical. AD applicability is type-based — compliance status for N521HA must be verified against the aircraft maintenance logbooks.
Search FAA DRS for applicable ADs →N521HA is one of 123 HILLER UH-12E aircraft on the U.S. registry · fleet median year 1964.
No NTSB accident or incident records found for N521HA in the NTSB aviation accident database.
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