AD Amdt-39-12378
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Lockheed | L-1011 | Airworthiness Directives; Lockheed Model L-1011 Series Airplanes |
Unsafe Condition
Undetected fires originating within the high speed gearbox (HSGB) breaching the HSGB case, which could result in engine damage and increased difficulty in extinguishing a fire.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Modify the engine turbine cooling air panel at the flight engineer/second officer's console, modify the pilot's caution and warning light panel on the main instrument panel, and modify the monitoring system for the engine turbine air temperature.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Within 24 months after October 6, 2000
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Lockheed Model L-1011-385 series airplanes equipped with Rolls Royce Model RB211-524 series engines, certificated in any category.
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
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