airworthiness · Rule · Final rule; request for comments. · Published 2000-07-03 · Effective 2000-08-02 · 65 FR 40983
Document
Document number
00-16231
Federal Register citation
65 FR 40983
Type
Rule
Action
Final rule; request for comments.
Category
airworthiness
Publication date
2000-07-03
Effective date
2000-08-02
FAA docket
Docket No. 2000-NE-05-AD
Abstract
This amendment adopts a new airworthiness directive (AD) that is applicable to Rolls-Royce plc. (RR) RB211 Trent 768-60, Trent 772- 60, and Trent 772B-60 turbofan engines. This action requires initial and repetitive ultrasonic inspections for cracks in fan blade dovetail roots, and if necessary, replacement with serviceable parts. This amendment is prompted by reports of fan blade failures due to dovetail root cracks. The actions specified in this AD are intended to prevent possible multiple fan blade failures, which could result in an uncontained engine failure and damage to the airplane.