airworthiness · Rule · Final rule. · Published 2013-06-24 · Effective 2013-07-29 · 78 FR 37703
Document
Document number
2013-14922
Federal Register citation
78 FR 37703
Type
Rule
Action
Final rule.
Category
airworthiness
Manufacturer
Rolls-Royce plc Turbofan
Publication date
2013-06-24
Effective date
2013-07-29
FAA docket
Docket No. FAA-2012-1327
Abstract
We are adopting a new airworthiness directive (AD) for all Rolls-Royce plc (RR) model RB211 Trent 768-60, 772-60, and 772B-60 turbofan engines. This AD was prompted by low-pressure (LP) compressor blade partial airfoil release events. This AD requires a one-time ultrasonic inspection of LP compressor blades that had accumulated more than 2,500 flight cycles (FC) since new. We are issuing this AD to prevent LP compressor blade airfoil separations, engine damage, and damage to the airplane.