2019-25-01: Turbine Section

Adoption of the Amendment Accordingly, under the authority delegated to me by the Administrator, the FAA amends 14 CFR part 39 as follows: PART 39--AIRWORTHINESS DIRECTIVES 0 1. The authority citation for part 39 continues to read as follows: Authority: 49 U.S.C. 106(g), 40113, 44701. Sec. 39.13 [Amended] 0 2. The FAA amends Sec. 39.13 by adding the following new airworthiness directive (AD): 2019-25-01 International Aero Engines LLC: Amendment 39-21001; Docket No. FAA-2019-0995; Product Identifier AD-2019-00113-E. (a) Effective Date This AD is effective December 16, 2019. (b) Affected ADs None. (c) Applicability 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. (d) Subject Joint Aircraft System Component (JASC)/Air Transport Association (ATA) of America Code 7250, Turbine Section. (e) Unsafe Condition This AD was prompted by reports of failure of certain LPT 3rd- stage blades. The FAA is issuing this AD to prevent failure of these LPT 3rd-stage blades. The unsafe condition, if not addressed, could result in failure of the LPT 3rd-stage blades, failure of one or more engines, loss of thrust control, and loss of the airplane. (f) Compliance Comply with this AD within the compliance times specified, unless already done. (g) Required Actions 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. (h) Definitions (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. (i) Alternative Methods of Compliance (AMOCs) (1) The Manager, ECO Branch, FAA, has the authority to approve AMOCs for this AD, if requested using the procedures found in 14 CFR 39.19. In accordance with 14 CFR 39.19, send your request to your principal inspector or localFlight Standards District Office, as appropriate. If sending information directly to the manager of the certification office, send it to the attention of the person identified in paragraph (j) of this AD. You may email your request to: [email protected]. (2) Before using any approved AMOC, notify your appropriate principal inspector, or lacking a principal inspector, the manager of the local flight standards district office/certificate holding district office. (j) Related Information For more information about this AD, contact Kevin M. Clark, Aerospace Engineer, ECO Branch, FAA, 1200 District Avenue, Burlington, MA 01803; phone: (781) 238-7088; fax: 781-238-7199; email: [email protected]. (k) Material Incorporated by Reference None.