Airworthiness Directive 89-12-09
one-timeAirworthiness Directives; Aircraft Certification Office, 9010 East Marginal Way South, Seattle, Washington. This amendment (39-6231, AD 89-12-09) becomes ef
Which aircraft AD 89-12-09 applies to
Footer lists ATR42-200/-300/-320/-500; docket filed under Aerospatiale (Amendment 39-6231) (applicability read from the AD teaser — confirm exact model/serial from the records.)
Whether AD 89-12-09 actually applies to your aircraft (by serial and installed parts) and whether it’s already complied with comes from that aircraft’s records.
How AD compliance is recorded
A valid compliance record (14 CFR 43.9) states:
Tailplate reads a tail number’s logbooks and matches every applicable AD — including this one — to its compliance evidence, with recurring next-due dates computed.
Look up a tail number →Applicability is derived from the FAA directive corpus and is advisory, not a legal airworthiness determination. Compliance is established only from an aircraft’s actual records.