airworthiness · Rule · Final rule; request for comments. · Published 2013-01-24 · Effective 2013-01-24 · 78 FR 5126
Document
Document number
2013-01358
Federal Register citation
78 FR 5126
Type
Rule
Action
Final rule; request for comments.
Category
airworthiness
Manufacturer
Rolls-Royce plc Turbofan
Publication date
2013-01-24
Effective date
2013-01-24
FAA docket
Docket No. FAA-2012-1334
Abstract
We are adopting a new airworthiness directive (AD) for all Rolls-Royce plc (RR) RB211-Trent 970-84, 970B-84, 972-84, 972B-84, 977- 84, 977B-84, and 980-84 turbofan engines. This AD requires replacement of the fuel oil heat exchanger (FOHE). This AD was prompted by a report of an in-flight increase of N2 intermediate pressure rotor vibrations resulting in an engine surge and pilot shut down of the engine. We are issuing this AD to prevent rotor bearing oil starvation, uncontained engine failure, and damage to the airplane.