AD 91-15-05
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| engine | Rolls-Royce Limited | GEM Mk. 530 | ROLLS-ROYCE plc Model GEM Mk 530 Series Engines |
Unsafe Condition
External fuel leakage from the hydromechanical fuel control unit (HMU) could result in a fire hazard in the engine nacelle.
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Required Actions
Perform an HMU leak check inspection within 15 hours time in service after the effective date. Reinspect daily within 30 minutes of last shut-down. Remove HMU from service if leakage is found. X-ray or disassemble inspect HMU at next engine shop visit or by December 31, 1991, and remove incorrectly assembled units. Use specified service bulletins.
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Compliance Time
within the next 15 hours time in service after the effective date of this AD
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Affected Aircraft
Rolls-Royce plc GEM Mk 530 series engines installed on, but not limited to, Westland 30 aircraft.
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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