AD 91-23-12
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
Loss of main landing gear braking effectiveness due to brake wear exceeding maximum limits specified in the AD.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Within 180 days after the effective date, inspect brake part numbers listed in the AD for wear. Replace any brake worn beyond the specified maximum wear limit (e.g., 2.10 inches or 3.00 inches) prior to further flight. Incorporate the maximum brake wear limits into the FAA-approved maintenance inspection program within the same 180-day period.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Within 180 days after the effective date of this AD
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 BFGoodrich brake part numbers identified in paragraph (a) of the AD.
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
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