Airworthiness Directive 2001-02-12
one-timeAirworthiness Directives; CFM International (CFMI) Model CFM56-7B Turbofan Engines
What this AD requires
This amendment adopts a new airworthiness directive (AD) that is applicable to CFMI model CFM56-7B turbofan engines. This action requires a one-time on-wing torque inspection, and torque if needed, of all the PS3 pressure line fittings to insure proper torque. This amendment is prompted by service events which resulted in two in-flight shutdowns (IFSD's) and an aborted takeoff due to the disconnection of one of the PS3 line fittings. The actions specified in this AD are intended to prevent air leakage from incorrectly torqued fittings of the PS3 line, which could result in engine power loss.
Which aircraft AD 2001-02-12 applies to
Requires checking/torquing PS3 pressure line fittings (Joints 1-6 per Figure 1 of the AD) within 25 days of the effective date; referenced guidance is CFM International Service Bulletin CFM56-7B S/B 75-0005, dated January 22, 2001, and the CFM56 Standard Practice Manual.
Whether AD 2001-02-12 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.