<RULE>
DEPARTMENT OF TRANSPORTATION
<SUBAGY>Federal Aviation Administration</SUBAGY>
<CFR>14 CFR Part 39</CFR>
<DEPDOC>[Docket No. FAA-2024-0036; Project Identifier MCAI-2023-00731-E; Amendment 39-22739; AD 2024-08-06]</DEPDOC>
<RIN>RIN 2120-AA64</RIN>
<SUBJECT>Airworthiness Directives; Rolls-Royce Deutschland Ltd & Co KG</SUBJECT>
<HD SOURCE="HED">AGENCY:</HD>
Federal Aviation Administration (FAA), DOT.
<HD SOURCE="HED">ACTION:</HD>
Final rule.
<SUM>
<HD SOURCE="HED">SUMMARY:</HD>
The FAA is adopting a new airworthiness directive (AD) for all Rolls-Royce Deutschland Ltd & Co KG (RRD) Model Trent 1000-A, Trent 1000-A2, Trent 1000-AE, Trent 1000-AE2, Trent 1000-C, Trent 1000-C2, Trent 1000-CE, Trent 1000-CE2, Trent 1000-D, Trent 1000-D2, Trent 1000-E, Trent 1000-E2, Trent 1000-G, Trent 1000-G2, Trent 1000-H, Trent 1000-H2, Trent 1000-J2, Trent 1000-K2, and Trent 1000-L2 engines. This AD was prompted by reports of wear in the combining spill valve (CSV) assembly of certain hydro-mechanical units (HMUs). This AD requires removing certain HMUs from service and replacing with a serviceable part. This AD also prohibits the installation of certain HMUs unless the HMU is a serviceable part or the CSV assembly has been replaced, 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.
</SUM>
<EFFDATE>
<HD SOURCE="HED">DATES:</HD>
This AD is effective June 10, 2024.
The Director of the Federal Register approved the incorporation by reference of a certain publication listed in this AD as of June 10, 2024.
</EFFDATE>
<HD SOURCE="HED">ADDRESSES:</HD>
<E T="03">AD Docket:</E>
You may examine the AD docket at regulations.gov under Docket No. FAA-2024-0036; or in person at Docket Operations between 9 a.m. and 5 p.m., Monday through Friday, except Federal holidays. The AD docket contains this final rule, the mandatory
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