airworthiness · Rule · Final rule; request for comments. · Published 2002-11-29 · Effective 2002-12-30 · 67 FR 71094
Document
Document number
02-29001
Federal Register citation
67 FR 71094
Type
Rule
Action
Final rule; request for comments.
Category
airworthiness
Manufacturer
Rolls-Royce plc. RB211-535 Turbofan
Publication date
2002-11-29
Effective date
2002-12-30
FAA docket
Docket No. 2002-NE-16-AD
Abstract
This amendment adopts a new airworthiness directive (AD) that is applicable to Rolls-Royce plc. (RR) models RB211-535E4-37, RB211- 535E4-B-37, and RB211-535E4-B-75 turbofan engines, with certain part number (P/N) low pressure (LP) turbine stage 2 discs installed. This action requires establishing new reduced LP turbine stage 2 disc cyclic limits. This action also requires removing from service affected discs that already exceed the new reduced cyclic limit, and removing other affected discs before exceeding their cyclic limits, using a drawdown schedule. The actions specified in this AD are intended to prevent LP turbine stage 2 disc failure, which could result in uncontained engine failure and possible loss of the airplane.