Airworthiness Directive · Amendment 39-22030 · Turbine engine compressor section
Rolls-Royce Deutschland Ltd & Co KG (Type Certificate Previously Held by Rolls-Royce plc) Turbofan Engines
This AD applies to Rolls-Royce Deutschland Ltd & Co KG (RRD) (Type Certificate previously held by Rolls-Royce plc) RB211 Trent 875-17, RB211 Trent 877-17, RB211 Trent 884-17, RB211 Trent 884B-17, RB211 Trent 892-17, RB211 Trent 892B-17, and RB211 Trent 895-17 model turbofan engines, as identified in EASA AD 2021-0114, dated April 23, 2021 (EASA AD 2021-0114).
The FAA is adopting a new airworthiness directive (AD) for all Rolls-Royce Deutschland Ltd & Co KG (RRD) RB211 Trent 875-17, 877-17, 884-17, 884B-17, 892-17, 892B-17, and 895-17 model turbofan engines. This AD was prompted by findings during engine overhaul of corrosion on the low-pressure compressor (LPC) front case assembly. This AD requires inspection of the LPC front case assembly and, depending on the result of the inspection, accomplishment of the applicable corrective action(s), as specified in a European Union Aviation Safety Agency (EASA) AD, which is incorporated by reference. The FAA is issuing this AD to address the unsafe condition on these products.
Except as specified in paragraph (h) of this AD: Perform all required actions within the compliance times specified in, and in accordance with EASA AD 2021-0114.
(1) Where EASA AD 2021-0114 requires compliance from its effective date, this AD requires using the effective date of this AD.
(2) Where EASA AD 2021-0114 defines a qualified shop visit as “any scheduled shop visit where the affected part is exposed and substantial rebuild has not yet started, except shop visits for serviceability only,” for this AD replace that phrase with “the induction of an engine into the shop after the effective date of this AD for maintenance involving the separation of pairs of major mating engine flanges, with the exception of the separation of engine flanges solely for the purposes of transportation of the engine without subsequent engine maintenance, which does not constitute an engine shop visit.”
(3) Where paragraph (3) of EASA AD 2021-0114 specifies “if, during the inspection as required by paragraph (1) of this AD, any corrosion is found exceeding the criteria as specified in the NMSB, before release to service of the engine, contact Rolls-Royce for approved repair instructions and accomplish those instructions accordingly,” for this AD replace that phrase with “remove the affected LPC front case assembly from service if corrosion is found that exceeds the criteria specified in Appendix 2 of the NMSB.” In lieu of removal of the affected LPC front case assembly, operators may repair the affected LPC front case assembly using a method approved by the Manager, International Validation Branch, FAA; or EASA; or Rolls-Royce's EASA Design Organization Approval (DOA). If approved by the DOA, the approval must include the DOA-authorized signature.
(4) This AD does not mandate compliance with the “Remarks” section of EASA AD 2021-0114.
Although the service information referenced in EASA AD 2021-0114 specifies to submit certain information to the manufacturer, this AD does not include that requirement.
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.
