AD 2013-04-01
Effective 03/08/2013 · Published 02/21/2013
Airworthiness Directives; Rolls-Royce plc Turbofan Engines
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 evaluati…