AD 87-06-06
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
Engine separation due to broken pylon attach fittings-to-skate-angle bolts, which are cracking because of stress-corrosion.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Inspect the pylon attach fittings-to-skate-angle bolts in accordance with Lockheed Service Bulletin 093-54-049, Revision 1. Replace broken bolts before further flight and replace all H-11 steel bolts with MP-35N bolts by January 15, 1991 or 15,000 hours time-in-service, whichever is later.
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Compliance Time
Before accumulating a total of 15,000 hours time-in-service or within the next 3,000 hours time-in-service after the effective date of the AD, whichever occurs later, and thereafter at intervals not to exceed 3,000 hours time-in-service or 15 months, whichever occurs later. Additionally, replace all bolts before January 15, 1991 or 15,000 hours time-in-service, whichever is later.
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Affected Aircraft
Lockheed-California Company Model L-1011-385 series airplanes, including L-1011-385-1, L-1011-385-1-14, L-1011-385-1-15, L-1011-385-3, 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 8, 2026
Rights: U.S. Government Public Domain
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