Airworthiness Directive · Amendment 39-19717 · Turbine engine compressor section
Rolls-Royce Deutschland Ltd & Co KG Turbofan Engines
This AD applies to all Rolls-Royce Deutschland Ltd. & Co KG (RRD) Trent 1000-A, Trent 1000-AE, Trent 1000-C, Trent 1000-CE, Trent 1000-D, Trent 1000-E, Trent 1000-G, and Trent 1000-H turbofan model engines.
The FAA is superseding airworthiness directive (AD) 2018-25-01 for all Rolls-Royce plc (RR) Trent 1000-A, Trent 1000-C, Trent 1000-D, Trent 1000-E, Trent 1000-G, and Trent 1000-H turbofan model engines. AD 2018-25-01 required initial and repetitive inspections of the intermediate-pressure compressor (IPC) stage 1 rotor (R1) blades, IPC stage 2 rotor (R2) blades, and IPC shaft stage 2 dovetail posts, and removing any cracked parts from service. This AD retains those inspections, revises certain reinspection intervals, and adds certain engine models to the applicability. This AD was prompted by a determination by the manufacturer of the need to revise inspection intervals for certain affected engines. In addition, the FAA added recently validated additional engine models to the applicability. The FAA is issuing this AD to address the unsafe condition on these products.
(1) Within 15 days of the effective date of this AD, or within the compliance times specified in the Accomplishment Instructions, Table 1, of Rolls-Royce plc (RR) Alert Non-Modification Service Bulletin (NMSB) Trent 1000 72-AK130, Revision 4, dated March 4, 2019 (“RR Alert NMSB Trent 100 72-AK130”), whichever occurs later, perform an on-wing inspection of the IPC stage 1 rotor (R1) blades in accordance with the Accomplishment Instructions, paragraph 3.A.(1), of RR Alert NMSB Trent 1000 72-AK130.
(2) Thereafter, repeat the on-wing inspections of the IPC R1 blades using the Accomplishment Instructions, paragraph 3.A.(1), and within the compliance times specified in the Accomplishment Instructions, Table 1, of RR Alert NMSB Trent 1000 72-AK130.
(3) Within 15 days of the effective date of this AD, or before exceeding the applicable threshold defined in the Accomplishment Instructions, Table 2 or Table 3, of RR Alert NSMB 72-AK130, whichever occurs later, perform an on-wing inspection of the IPC stage 2 rotor (R2) blades and IPC shaft stage 2 dovetail posts in accordance with the Accomplishment Instructions, paragraphs 3.B.(1) and 3.C.(1), of RR Alert NMSB Trent 1000 72-AK130.
(4) After performing the inspection in paragraph (g)(3) of this AD, repeat the on-wing inspections of IPC R2 blades and IPC shaft stage 2 dovetail posts using paragraphs 3.B.(1) and 3.C.(1) of RR Alert NMSB Trent 1000 72-AK130 and within the compliance times specified in the Accomplishment Instructions, Table 2 and Table 3, of RR Alert NMSB Trent 1000 72-AK130.
(5) For any on-wing inspection required by paragraphs (g)(1) through (4) of this AD, provided the stated thresholds and intervals are not exceeded, you may substitute:
(i) An in-shop inspection of an engine or module performed in accordance with the instructions of the Accomplishment Instructions, paragraphs 3.A.(2), 3.B.(2), and 3.C.(2) of the RR Alert NMSB Trent 1000 72-AK130, Revision 4, dated March 4, 2019; or
(ii) An in-shop piece part inspection during refurbishment in accordance with the Accomplishment Instructions, paragraphs 3.B.(2)(f)(vi), 3.B.(2)(g)(v), 3.B.(3)(d)(iii) of RR NMSB Trent 1000 72-K132, Revision 2, dated March 26, 2019.
(6) If any IPC R1 blade, IPC R2 blade, or IPC shaft stage 2 dovetail post is found cracked during any inspection (on-wing or in-shop) required by this AD, remove the cracked part from service and replace with a part eligible for installation before further flight.
As of the effective date of this AD, before the next flight after each occurrence where engine operation in asymmetric power conditions was sustained for more than 30 minutes at less than 25,000 feet, either resulting from engine power reduction or from engine in-flight shut-down (IFSD), inspect the IPC R1 blades, the IPC R2 blades, and the IPC shaft stage 2 dovetail posts in accordance with the Accomplishment Instructions, paragraphs 3.A.(1), 3.B.(1), and 3.C.(1), of RR Alert NMSB Trent 1000 72-AK130, Revision 4, dated March 4, 2019, on the engine that did not experience the power reduction or IFSD installed on the airplane.
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
