Airworthiness Directives; International Aero Engines (IAE) Turbofan Engines
airworthiness · Rule · Final rule. · Published 2018-11-07 · Effective 2018-12-12 · 83 FR 55614
Document
Document number
2018-24239
Federal Register citation
83 FR 55614
Type
Rule
Action
Final rule.
Category
airworthiness
Manufacturer
International Aero
Publication date
2018-11-07
Effective date
2018-12-12
FAA docket
Docket No. FAA-2018-0404
Abstract
We are adopting a new airworthiness directive (AD) for all International Aero Engines (IAE) PW1133G-JM, PW1133GA-JM, PW1130G-JM, PW1127G-JM, PW1127GA-JM, PW1127G1-JM, PW1124G-JM, PW1124G1-JM, and PW1122G-JM turbofan engines. This AD was prompted by reports of in- flight engine shutdowns and aborted take-offs as the result of certain parts affecting the durability of the rear high-pressure compressor (HPC) rotor hub knife edge seal. This AD requires replacing the diffuser case air seal assembly, the high-pressure turbine (HPT) 2nd- stage vane assembly, and the HPT 2nd-stage borescope stator vane assembly with parts eligible for installation. We are issuing this AD to address the unsafe condition on these products.