AD 2003-11-18
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Boeing | 747 and MD-11 | Airworthiness Directives; Pratt and Whitney PW4000 Series Turbofan Engines |
Unsafe Condition
Engine takeoff power loss events due to high-pressure-compressor (HPC) surge.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Install a new Ring Case Configuration (RCC) rear HPC on engines installed in the Boeing fleet. Perform on-wing Testing-21 on engines installed on Boeing 747 and MD-11 airplanes. Incorporate the RCC rear HPC as a terminating action to the AD requirements.
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Compliance Time
Within 50 flight hours after the effective date.
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Affected Aircraft
Pratt and Whitney PW4000 series turbofan engines installed on Boeing 747 and MD-11 airplanes, with specific serial number ranges and configuration designators as detailed in the AD.
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Source: Official FAA Source ↗
Retrieved: Apr 6, 2026
Rights: U.S. Government Public Domain
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