AD 2003-24-12
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| engine | Pratt & Whitney | JT9D-3A | Airworthiness Directives; Pratt & Whitney JT9D-3A, -7, -7A, -7F, -7H, -7AH, and -7J Turbofan Engines |
Unsafe Condition
Failed gearbox pressure tube or failed No. 4 bearing front pressure manifold, potentially leading to engine fire due to oil leakage and vibration-induced movement.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Visually inspect the clamp assemblies (P/Ns ST1594-06, ST1594-08, ST1594-10) for wear, damage, or missing rubber cushions, and replace if necessary. Visually inspect the gearbox pressure tube (P/N 697896) and No. 4 bearing front pressure manifold (P/N 670663) for nicks, dents, corrosion, or oil leaks, and repair or replace if necessary. Ensure all components are correctly positioned.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Within 250 hours-in-service or at the next shop visit, whichever occurs first, after the effective date.
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Pratt & Whitney JT9D-3A, -7, -7A, -7F, -7H, -7AH, and -7J turbofan engines with gearbox pressure tube (P/N 697896) and No. 4 bearing front pressure manifold (P/N 670663) installed.
AI-generated summary from the source AD text. Verify against the official source before acting.
Source: Official FAA Source ↗
Retrieved: Apr 6, 2026
Rights: U.S. Government Public Domain
This site is not affiliated with or endorsed by the FAA. Always verify with official sources.