Airworthiness Directive · Amendment 39-15759 · Rolls-Royce plc RB211 Trent 500 Series Turbofan Engines
Rolls-Royce plc RB211 Trent 500 Series Turbofan Engines
This AD applies to Rolls-Royce plc RB211 Trent 553-61, 553A2-61, 556-61, 556A2-61, 556B-61, 556B2-61, 560-61, and 560A2-61 turbofan engines with a low-pressure turbine (LPT) stage 3 disc, part number (P/N) FK29581, installed. These engines are installed on, but not limited to, Airbus A340-500 and A340-600 series airplanes.
We are adopting a new airworthiness directive (AD) for the products listed above. This AD results from mandatory continuing airworthiness information (MCAI) issued by an aviation authority of another country to identify and correct an unsafe condition on an aviation product. The MCAI describes the unsafe condition as:
After the effective date of this AD, remove LPT stage 3 discs, P/N FK29581, from service before reaching the new reduced declared safe cyclic life of 7,990 CSN.
(f) Do not install an LPT stage 3 disc, P/N FK29581, onto any engine, unless it has been verified that the disc has not yet accumulated 7,990 CSN.
The aircraft, engines and makers this AD names, by the model designations in its text. A model listed here may still be outside the AD's serial ranges.
