Airworthiness Directive · Amendment 39-19333 · Rolls-Royce plc Turbofan Engines
Rolls-Royce plc Turbofan Engines
Superseded. A later AD replaced this one: AD 2019-20-05. Comply with the one in force.
This AD applies to Rolls-Royce plc (RR) Trent 1000-A, Trent 1000-C, Trent 1000-D, Trent 1000-E, Trent 1000-G, Trent 1000-H, Trent 1000-A2, Trent 1000-C2, Trent 1000-D2, Trent 1000-E2, Trent 1000-G2, Trent 1000-H2, Trent 1000-J2, Trent 1000-K2, and Trent 1000-L2 engine models with engine serial numbers identified in Appendix 1, Table 1, of RR Alert Non-Modification Service Bulletin (NMSB) TRENT 1000 72-AJ992, Revision 1, dated January 3, 2018, or Appendix 1, Table 1, of RR Alert NMSB TRENT 1000 72-AJ992, Revision 2, dated April 16, 2018, except those that have incorporated RR Service Bulletin (SB) Trent 1000 72-H818, dated November 14, 2016.
We are adopting a new airworthiness directive (AD) for certain Rolls-Royce plc (RR) Trent 1000-A, Trent 1000-C, Trent 1000-D, Trent 1000-E, Trent 1000-G, Trent 1000-H, Trent 1000-A2, Trent 1000-C2, Trent 1000-D2, Trent 1000-E2, Trent 1000-G2, Trent 1000-H2, Trent 1000-J2, Trent 1000-K2, and Trent 1000-L2 engine models. This AD requires certain engines susceptible to intermediate-pressure turbine (IPT) blade failure not be installed on an airplane together with other engines with IPT blades of the same age. This AD was prompted by new operating restrictions for engines with IPT blades susceptible to shank corrosion and possible blade separation. We are issuing this AD to address the unsafe condition on these products.
After the effective date of this AD, for any affected engine identified in Appendix 1, Table 1, of RR Alert NMSB TRENT 1000 72-AJ992, Revision 1, dated January 3, 2018; or Appendix 1, Table 1, of RR Alert NMSB TRENT 1000 72-AJ992, Revision 2, dated April 16, 2018, installed with another affected engine, listed in the same table, on the same airplane, remove one of the engines from the airplane before both engines exceed their respective IPT blade cyclic life limit identified in Appendix 1, Table 1, of the respective NMSB, or within 20 flight cycles, whichever occurs later.
(1) Engines listed in each group in Appendix 1, Table 1, of RR Alert NMSB Trent 1000 72-AJ992, Revision 1, dated January 3, 2018, or Appendix 1, Table 1, of Alert NMSB Trent 1000 72-AJ992, Revision 2, dated April 16, 2018, are not to be installed on an airplane together with an engine listed in a different group in the same table once they have exceeded their IPT blade cyclic life limit identified in Appendix 1, Table 1 of the respective NMSB.
(2) Engines listed in Appendix 1, Table 1, of RR Alert NMSB Trent 1000 72-AJ992, Revision 1, dated January 3, 2018, or Appendix 1, Table 1, of RR Alert NMSB Trent 1000 72-AJ992, Revision 2, dated April 16, 2018, may not be installed on an airplane with engines that have IPT blades installed in accordance with RR NMSB Trent 1000 72-J442, Revision 1, dated February 21, 2018, or Initial Issue, dated September 21, 2016; or RR NMSB Trent 1000 72-J465, Revision 2, dated February 28, 2018, or Revision 1, dated January 10, 2017, or Initial Issue, dated December 22, 2016.
Modification of an engine in accordance with the instructions of RR SB Trent 1000 72-H818, dated November 14, 2016, constitutes terminating action for the requirements of this AD for that engine.
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.
Engines
