Airworthiness Directive 2009-14-12
one-timeAirworthiness Directives; Pratt & Whitney Canada Corp. (P&WC) Models PW305A and PW305B Turbofan Engines
What this AD requires
We are adopting a new airworthiness directive (AD) for the products listed above. This AD results from mandatory continuing airworthiness information (MCAI) issued by an aviation authority of another country to identify and correct an unsafe condition on an aviation product. The MCAI describes the unsafe condition as:
Which aircraft AD 2009-14-12 applies to
Applies only to engines with high pressure compressor (HPC) drum rotor assemblies, post P&WC Service Bulletin (SB) PW300-72-24287 but without P&WC SB PW300-72-24376, installed (affected assemblies P/N 30B2478 and 30B2542 with single stage coated labyrinth seals).
Whether AD 2009-14-12 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 →Read the full directive (Federal Register)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.