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Airworthiness Directive 2007-03-15

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Official AD 2007-03-15 · FR doc E7-2068 · 2007-02-12 · turbine engine

Airworthiness Directives; CFM International CFM56-5 and -5B Series Turbofan Engines

What this AD requires

The FAA is superseding an existing airworthiness directive (AD) for CFM International CFM56-5 and -5B series turbofan engines. That AD requires exhaust gas temperature (EGT) harness replacement or the establishment of an EGT baseline and trend monitoring. That AD also requires replacement, if necessary, of certain EGT harnesses and EGT couplings as soon as a slow and continuous EGT drift downward is noticed after the effective date of that AD. This AD requires the same actions but for an increased population of affected EGT harnesses. This AD results from CFM International adding subsequently certified engine models to the list of engines that could have affected harnesses installed. We are issuing this AD to prevent unexpected deterioration of critical rotating engine parts due to higher than desired engine operating EGTs.

Which aircraft AD 2007-03-15 applies to

MakesCfm International
ModelsCFM56-5, CFM56-5B, CFM56-5B3/P1, CFM56-5B3/2P1, CFM56-5B4/P1, CFM56-5B4/2P1, CFM56
Part-conditional — CA170-00, CA171-00, CA172-02.

Applies only to engines with an EGT upper harness P/N CA170-00, EGT lower harness P/N CA171-00, or EGT coupling P/N CA172-02, each bearing a serial number listed in the referenced tables of CFM56-5B S/B 77-0008 Revision 3 (dated April 4, 2005) or CFM56-5 S/B 77-0020 Revision 3 (dated April 4, 2005). Installed on but not limited to Airbus Industrie A318, A319, A320, and A321 airplanes.

Whether AD 2007-03-15 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:

Method of compliance — The specific action taken (inspected, replaced, modified) and to what revision.
Date — When the work was done.
Aircraft time — Total time in service / tach at compliance — how recurring next-due is computed.
Signature & certificate — The A&P/IA who returned it to service, with certificate number.
Is AD 2007-03-15 complied with on your aircraft?

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.