airworthiness · Rule · Final rule; request for comments. · Published 2006-11-14 · Effective 2006-12-19 · 71 FR 66229
Document
Document number
E6-18964
Federal Register citation
71 FR 66229
Type
Rule
Action
Final rule; request for comments.
Category
airworthiness
Publication date
2006-11-14
Effective date
2006-12-19
FAA docket
Docket No. FAA-2006-26052
Abstract
The FAA is adopting a new airworthiness directive (AD) for Rolls-Royce, plc (RR) RB211 Trent 768-60, 772-60, and 772B-60 turbofan engines. This AD requires initial and repetitive on-wing or in-shop inspections of the high pressure (HP)/intermediate pressure (IP) turbine bearing oil feed tube heat shield. This AD results from a report that a damaged outer heat shield caused fretting of the oil feed tubes. We are issuing this AD to prevent an uncontained failure of the HP turbine disc and damage to the airplane.