airworthiness · Rule · Final rule; request for comments. · Published 2014-01-08 · Effective 2014-01-23 · 79 FR 1315
Document
Document number
2014-00083
Federal Register citation
79 FR 1315
Type
Rule
Action
Final rule; request for comments.
Category
airworthiness
Manufacturer
Rolls-Royce plc Turbofan
Publication date
2014-01-08
Effective date
2014-01-23
FAA docket
Docket No. FAA-2013-1004
Abstract
We are adopting a new airworthiness directive (AD) for all Rolls-Royce plc (RR) RB211-524G2-19, RB211-524G3-19, RB211-524H-36, and RB211-524H2-19 turbofan engines. This AD requires a one-time reduction in the cyclic life of certain high-pressure (HP) compressor rotor stage 1 and stage 2 discs, and removal of discs that exceed the reduced cycle life. This AD was prompted by a review by RR of the cyclic life of life-limited parts (LLPs) for RB211-524 series engines. We are issuing this AD to prevent the failure of certain LLPs, which could result in uncontained engine damage and damage to the airplane.