Airworthiness Directive · Amendment 39-21158 · Turbine engine compressor section
Rolls-Royce Deutschland Ltd & Co KG (Type Certificate Previously Held by Rolls-Royce plc) Turbofan Engines
This AD applies to all Rolls-Royce Deutschland Ltd. & Co KG (RRD) (Type Certificate previously held by Rolls-Royce plc) 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 model turbofan engines.
The FAA is adopting a new airworthiness directive (AD) for 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 model turbofan engines. This AD requires removing and replacing one or both affected engines, depending on whether the engine pairing combinations are compliant or non-compliant, as described in the service information. This AD was prompted by occurrences of in- service engine surges on affected RRD Trent model turbofan engines with a high number of intermediate pressure compressor (IPC) module flight hours since new (HSN) or cycles since new (CSN). The FAA is issuing this AD to address the unsafe condition on these products.
Within 30 days after the effective date of this AD, remove and replace one or both affected engines identified as “Not Acceptable De-pair required” in paragraph 3, Accomplishment Instructions, Table 2, “Examples of compliant and non-compliant engine pairing combinations,” of Rolls-Royce plc (RR) Alert Non-Modification Service Bulletin (NMSB) Trent 1000 72-AK468, Revision 1, dated March 3, 2020.
After the effective date of this AD, do not install on any aircraft, an engine pairing combination identified as “Not Acceptable De-pair required” in paragraph 3, Accomplishment Instructions, Table 2, “Examples of compliant and non-compliant engine pairing combinations,” of RR Alert NMSB Trent 1000 72-AK468, Revision 1, dated March 3, 2020.
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
