AD 86-23-52 R2
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Lockheed Martin Corporation | L-1011-385-1 | LOCKHEED CALIFORNIA COMPANY Model L-1011-385 Series Airplanes |
| aircraft | Lockheed Martin Corporation | L-1011-385-1-14 | LOCKHEED CALIFORNIA COMPANY Model L-1011-385 Series Airplanes |
| aircraft | Lockheed Martin Corporation | L-1011-385-1-15 | LOCKHEED CALIFORNIA COMPANY Model L-1011-385 Series Airplanes |
| aircraft | Lockheed Martin Corporation | L-1011-385-3 | LOCKHEED CALIFORNIA COMPANY Model L-1011-385 Series Airplanes |
Unsafe Condition
Wing rear spar failure due to fatigue cracking.
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Required Actions
Inspect the wing rear spar using ultrasonic inspection procedures in Lockheed Service Bulletin 093-57-A181, Revision 3, or later FAA-approved revision. If a crack is found, repair before further flight. Alternate means of compliance may be used if approved.
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Compliance Time
Within 40 landings after the effective date (May 1, 1987) or prior to accumulation of 6,000 landings, whichever occurs later, unless already accomplished within the last 260 landings. Thereafter, inspections must be done at intervals not exceeding 300 landings.
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Affected Aircraft
Lockheed California Company Model L-1011-385 series airplanes certificated in any category.
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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