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The Federal Aviation Administration (FAA) has proposed a new airworthiness directive (AD) for Rolls-Royce Deutschland Ltd & Co KG (RRD) Model Trent XWB-75, XWB-79, XWB-79B, and XWB-84 engines. This proposal is a response to reports that some in-service engines showed differential oil pressure measurements lower than expected.

Why it matters: This is a standard safety maintenance action. The practical significance is that airlines operating these specific engine models will likely need to schedule work to replace a specific part to ensure oil pressure remains within expected ranges. It does not change how the planes fly or who can fly them, but it does add a maintenance requirement to keep the engines running safely.

Who it affects

  • Airlines operating aircraft equipped with Rolls-Royce Trent XWB-75, -79, -79B, or -84 engines

The Federal Aviation Administration published this proposed rule in the Federal Register; readers should check the original document for specific compliance deadlines and technical details before relying on this summary.

Agency: Transportation Department, Federal Aviation Administration
Source: Federal Register — read the official document

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