airworthiness · Rule · Final rule; request for comments. · Published 2001-09-26 · Effective 2001-10-11 · 66 FR 49099
Document
Document number
01-24023
Federal Register citation
66 FR 49099
Type
Rule
Action
Final rule; request for comments.
Category
airworthiness
Manufacturer
Rolls-Royce plc. RB211 535 Turbofan
Publication date
2001-09-26
Effective date
2001-10-11
FAA docket
Docket No. 2001-NE-22-AD
Abstract
This amendment adopts a new airworthiness directive (AD) that is applicable to Rolls-Royce plc. (RR) models RB211-535C-37, RB211- 535E4-37, RB211-535E4-B-37, and RB211-535E4-B-75 turbofan engines, with radial drive steady bearing, part number (P/N) LK76084. This action requires the replacement of certain radial drive steady bearings, installed in the high speed gearbox drive. This amendment is prompted by five reports of radial drive steady bearing failures. The actions specified in this AD are intended to reduce the risk of engine in- flight shutdown, due to failure at low life of radial drive steady bearings.