AD 98-09-23
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Lockheed Martin Corporation | L-1011-385-1 | Airworthiness Directives; Lockheed Model L-1011 Series Airplanes |
| aircraft | Lockheed Martin Corporation | L-1011-385-1-14 | Airworthiness Directives; Lockheed Model L-1011 Series Airplanes |
| aircraft | Lockheed Martin Corporation | L-1011-385-1-15 | Airworthiness Directives; Lockheed Model L-1011 Series Airplanes |
| aircraft | Lockheed Martin Corporation | L-1011-385-3 | Airworthiness Directives; Lockheed Model L-1011 Series Airplanes |
Unsafe Condition
Bearing failure in the accessory gearbox could lead to a fire in the gearbox.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Inspect and modify the fuel feed line system to prevent heat damage, install vent air tubes in the gear compartment, and ensure thickened gearbox housings are installed. Operators must also comply with specified maintenance procedures to detect and correct bearing failures.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Effective June 3, 1998
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Lockheed Model L-1011 series airplanes equipped with Rolls Royce RB211-22B engines, all serial numbers.
AI-generated summary from the source AD text. Verify against the official source before acting.
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
This site is not affiliated with or endorsed by the FAA. Always verify with official sources.