Summary
We are superseding an existing airworthiness directive (AD) for all Rolls-Royce plc (RR) RB211-524 series turbofan engines. That AD currently requires removal and repair of certain thrust reverser units (TRUs) prior to reinstallation. This AD requires the same actions for an expanded population of TRUs and extends the compliance time for repairing certain TRUs. This AD was prompted by additional engineering evaluation of TRUs, as a result of a translating cowl gearbox stubshaft failure and subsequent repair. We are issuing this AD to prevent failure of the attachment rivets, which may result in release of the TRU from the engine.
Directive Details
AD Number
FAA-2011-0624
Document Number
2013-03708
Type
Rule
Publication Date
February 21, 2013
Effective Date
March 8, 2013
Affected Manufacturer
Rolls-Royce plc Turbofan
Criticality
important
Emergency
No
Docket ID
Docket No. FAA-2011-0624
Topics
Official Documents
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