AD 2000-24-26
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| engine | Rolls-Royce | plc RB211 Trent 800 Series | Airworthiness Directives; Rolls-Royce plc RB211 Trent 800 Series Turbofan Engines |
Unsafe Condition
Cracks in fan blade roots could lead to fan blade failure, resulting in multiple fan blade releases, uncontained engine failure, and possible damage to the airplane.
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Required Actions
Perform initial and repetitive ultrasonic inspections of fan blade roots for cracks according to specified thresholds and intervals. Remove and replace cracked fan blades with serviceable parts before further flight. Inspect engines exceeding thresholds within 100 cycles-in-service after the effective date.
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Compliance Time
Within specified cycles-in-service intervals, or within 100 cycles-in-service if thresholds are exceeded on the effective date.
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Affected Aircraft
Rolls-Royce plc RB211 Trent 875, RB211 Trent 877, RB211 Trent 884, RB211 Trent 892, and RB211 Trent 892B series turbofan engines, except if fan blades described in RR Service Bulletin RB.211-72-C629 were installed as complete sets. These engines are installed on but not limited to Boeing 777 series airplanes.
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Source: Official FAA Source ↗
Retrieved: Apr 6, 2026
Rights: U.S. Government Public Domain
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