Summary
We are adopting a new airworthiness directive (AD) for Rolls- Royce plc (RR) RB211-535E4-37, -535E4-B-37, -535E4-C-37, RB211Trent 768-60, 772-60, and 772B-60 turbofan engines. This AD requires removal of certain high-pressure (HP) and intermediate-pressure (IP) turbine discs before their accumulated cyclic lives have reached the revised limits. This AD was prompted by a report of an HP disc contaminated with a steel inclusion. We are issuing this AD to prevent failure of the HP or IP turbine disc, uncontained engine failure, and damage to the airplane.
Directive Details
AD Number
FAA-2013-0750
Document Number
2013-28221
Type
Rule
Publication Date
November 26, 2013
Effective Date
December 11, 2013
Affected Manufacturer
Rolls-Royce plc Turbofan
Criticality
important
Emergency
No
Docket ID
Docket No. FAA-2013-0750
Topics
Official Documents
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