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Airworthiness Directive 2020-07-51

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Official AD 2020-07-51 · FR doc 2020-07627 · 2020-04-13 · turbine engine

Airworthiness Directives; International Aero Engines AG (IAE) Turbofan Engines

What this AD requires

The FAA is adopting a new airworthiness directive (AD) for certain International Aero Engines AG (IAE) V2522-A5, V2524-A5, V2525- D5, V2527-A5, V2527E-A5, V2527M-A5, V2528-D5, V2530-A5, and V2533-A5 model turbofan engines. This emergency AD was sent previously to all known U.S. owners and operators of these engines. This AD requires removal of affected high-pressure turbine (HPT) 1st-stage disks from service. This AD was prompted by investigative findings from an event involving an uncontained failure of a HPT 1st-stage disk that resulted in high-energy debris penetrating the engine cowling. The FAA is issuing this AD to address the unsafe condition on these products.

Which aircraft AD 2020-07-51 applies to

MakesInternational Aero Engines (Iae)
ModelsV2522-A5, V2524-A5, V2525-D5, V2527-A5, V2527E-A5, V2527M-A5, V2528-D5, V2530-A5, V2533-A5, V2500
Serial-conditional — narrows to serials PKLBR37442–PKLBR37442, PKLBR38359–PKLBR38359, PKLBR73862–PKLBR73862, PKLBR73289–PKLBR73289, PKLBR73270–PKLBR73270, PKLBR38981–PKLBR38981, PKLBR38661–PKLBR38661, PKLBR40207–PKLBR40207, PKLBR37445–PKLBR37445, PKLBR73861–PKLBR73861, PKLBR73268–PKLBR73268, PKLBR38629–PKLBR38629, PKLBSC8047–PKLBSC8047, PKLBR38979–PKLBR38979.
Part-conditional — 2A5001.

Applies only to engines with a high-pressure turbine (HPT) 1st-stage disk, part number 2A5001, having one of the listed serial numbers, installed.

Whether AD 2020-07-51 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 2020-07-51 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.