AD 87-15-51
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
Cracks in the main landing gear (MLG) shock strut cylinder due to stainless steel bushings in the retract lugs, which could lead to structural failure.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Perform an ultrasonic inspection of the inboard retract lugs of both left and right MLG shock strut cylinders within 10 days after the effective date (August 24, 1987) if not done within the last 400 landings, and repeat every 400 landings. Repair or replace cracked cylinders before further flight. Use approved service bulletin procedures or alternate means of compliance approved by the FAA.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Within 10 days after the effective date of this AD, unless previously accomplished within the last 400 landings, and thereafter at intervals not to exceed 400 landings
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Lockheed-California Company Model L-1011-385 series airplanes with stainless steel bushings in the retract lugs of the left and/or right main landing gear shock strut cylinder.
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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