Airworthiness Directive · Amendment 39-21001 · Turbine section
International Aero Engines, LLC Turbofan Engines
This AD applies to International Aero Engines, LLC (IAE LLC) PW1122G-JM, PW1124G-JM, PW1124G1-JM, PW1127G1-JM, PW1127GA-JM, PW1127G-JM, PW1129G-JM, PW1130G-JM, PW1133GA-JM, PW1133G-JM model turbofan engines with an engine serial number listed in paragraphs (g)(1) through (4) of this AD and with low-pressure turbine (LPT) 3rd-stage blades, part number (P/N) 5387343, 5387493, 5387473 or 5387503.
The FAA is adopting a new airworthiness directive (AD) for certain International Aero Engines, LLC (IAE LLC) PW1122G-JM, PW1124G- JM, PW1124G1-JM, PW1127G1-JM, PW1127GA-JM, PW1127G-JM, PW1129G-JM, PW1130G-JM, PW1133GA-JM, PW1133G-JM model turbofan engines. This AD requires replacement of certain low-pressure turbine (LPT) 3rd-stage blades. This AD was prompted by multiple reports of LPT 3rd-stage blade failures causing a reduction of engine thrust. The FAA is issuing this AD to address the unsafe condition on these products.
For any IAE LLC LPT 3rd-stage blade, P/N 5387343, 5387493, 5387473, or 5387503, and with an engine serial number specified in paragraph (g)(1) through (4) of this AD, remove the affected blade from service within the times specified in paragraphs (g)(1) through (4) of this AD and replace with a part eligible for installation.
(1) Within 90 days after the effective date of this AD or at the next engine shop visit, whichever comes first, for engines with serial numbers: P770536; P770620; P770626; P770641; P770644; P770681; P770690; P770693; P770773; P770780; P770813; P770816; P770827; P770841; P770852; P770869; P770870; P770873; P770883; P770894; P770909; P770512; P770762; P770484; P770805; P770716; P770836; or P770942.
(2) Within 180 days after the effective date of this AD or at the next engine shop visit, whichever comes first, for engines with serial numbers: P770347; P770981; P770814; P770825; P770964; P770622; P770763; P771019; P770980; P770985; P771048; P770487; P770911; P770960; P770932; P770934; P770444; P770993; P770996; P770893; P770320; P771036; P771040; P770797; P771047; P770537; P771026; P771050; P771046; P771074; P771062; P771080; P771099; P771164; or P770984.
(3) Within 270 days after the effective date of this AD or at the next engine shop visit, whichever comes first, for engines with serial numbers: P770966; P770482; P770170; P770272; P770646; P771167; P770495; P771162; P770463; P770853; P771015; P771032; P771165; P771170; P771092; P771093; P771174; P771135; P770597; P771113; P770469; P771154; P770244; P771059; P770287; P770740; P771107; P771118; P770366; P770607; P770577; P771219; P771258; P771207; P771211; P771138; P771140; P770594; P771020; P771279; P771280; P770499; P770279; P771273; P770978; or P770916.
(4) Within 360 days after the effective date of this AD or at the next engine shop visit, whichever comes first, for engines with serial numbers: P770579; P771188; P770722; P770603; P770715; P770768; P771120; P771132; P770782; P771288; P770504; P771238; P770676; P770128; P770191; P771277; P770749; P770800; P770381; P770395; P770218; P770374; P770256; P770452; P770460; P771141; P770138; P770750; P770645; P770756; P770308; P770143; P770439; P770509; P770127; P770139; P770172; P770176; P770129; P770140; P770173; P770640; P770742; P771006; P770505; P771161; P770315; P770263; P770724; P770259; P770149; P770269; P770486; P770614; P770975; P770946; P770629; or P771166.
(1) For the purpose of this AD, an “engine shop visit” is the induction of an engine into the shop for maintenance involving the separation of pairs of major mating engine flanges, except that the separation of engine flanges solely for the purposes of transportation of the engine without subsequent engine maintenance does not constitute an engine shop visit.
(2) For the purpose of this AD, a “part eligible for installation” is any LPT 3rd-stage blade that does not have a P/N 5387343, 5387493, 5387473, or 5387503.
