AD 2021-17-12
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Rolls-Royce plc | Various | Airworthiness Directives; Rolls-Royce Deutschland Ltd & Co KG (Type Certificate Previously Held by Rolls-Royce plc) Turbofan Engines |
Unsafe Condition
An unexpected reduction in fuel pump performance has been seen during testing of high life units. Strip examination of these fuel pumps has identified that life-related wear-out of the internal components is causing deterioration in pump efficiency.
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Required Actions
Replace the affected parts before exceeding reduced life limits, as specified in Rolls-Royce Alert Non-Modification Service Bulletin (NMSB) TRENT 1000-73-AK581, Revision 3, dated April 7, 2021.
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Compliance Time
Before exceeding reduced life limits
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Affected Aircraft
All Rolls-Royce Deutschland Ltd & Co KG (RRD) Trent 1000-D2, Trent 1000-J2, and Trent 1000-K2 model turbofan engines with certain part-numbered fuel pumps installed.
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Source: Official FAA Source ↗
Retrieved: Apr 4, 2026
Rights: U.S. Government Public Domain
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