Airworthiness Directives; Rolls-Royce Deutschland Ltd & Co KG Turbofan Engines
airworthiness · Rule · Final rule; request for comments. · Published 2017-05-26 · Effective 2017-06-12 · 82 FR 24236
Document
Document number
2017-10437
Federal Register citation
82 FR 24236
Type
Rule
Action
Final rule; request for comments.
Category
airworthiness
Manufacturer
Rolls-Royce Deutschland Ltd & Co KG Turbofan
Publication date
2017-05-26
Effective date
2017-06-12
FAA docket
Docket No. FAA-2017-0186
Abstract
We are adopting a new airworthiness directive (AD) for all Rolls-Royce Deutschland Ltd & Co KG (RRD) model Spey 506-14A, Spey 555- 15, Spey 555-15H, Spey 555-15N, and Spey 555-15P turbofan engines. This AD requires reducing the maximum approved life limits for certain high- pressure compressor (HPC) stage 12 rotor disks. We are issuing this AD to correct the unsafe condition on these products.