AD 2010-29451
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| engine | Pratt & Whitney | PW4000 Series | Airworthiness Directives; Pratt & Whitney PW4000 Series Turbofan Engines |
Unsafe Condition
cracking of No. 3 bearing oil pressure tubes, which could result in internal oil fire, failure of the high-pressure turbine disks, uncontained engine failure, and damage to the airplane.
Required Actions
Perform a one-time visual inspection of the exterior of the No. 3 bearing oil pressure tube for cracks and evidence of being repaired. Remove the tube from service if any cracks are found. Remove the tube from service if found repaired, or if suspected that the tube was repaired. Do not install any repaired No. 3 bearing oil pressure tube into any engine.
Compliance Time
Within 50 flight hours
Affected Aircraft
Pratt & Whitney turbofan engines, with No. 3 bearing oil pressure tube, part number (P/N) 51J041-01, P/N 50J604-01, or P/N 50J924-01, installed on, but not limited to, Airbus A300, A310, and A330 series, Boeing MD-11, 747, 767, and 777 series, airplanes.
Source: Official FAA Source ↗
Retrieved: Apr 6, 2026
Rights: U.S. Government Public Domain
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