AD 99-07-05
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Lockheed Martin Corporation | L-1011-385-1 | Airworthiness Directives; Lockheed Model L-1011-385 Series Airplanes |
| aircraft | Lockheed Martin Corporation | L-1011-385-1-14 | Airworthiness Directives; Lockheed Model L-1011-385 Series Airplanes |
| aircraft | Lockheed Martin Corporation | L-1011-385-1-15 | Airworthiness Directives; Lockheed Model L-1011-385 Series Airplanes |
| aircraft | Lockheed Martin Corporation | L-1011-385-3 | Airworthiness Directives; Lockheed Model L-1011-385 Series Airplanes |
Unsafe Condition
Fretting at the diagonal truss to web joint of the elevator and cracking in the cap fillet radius adjacent to the joint due to loose fasteners from local vibration could result in reduced structural integrity and flutter instability if coupled with other structural failures.
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Required Actions
Conduct repetitive external visual inspections and internal borescope inspections of the elevator assembly to detect discrepancies. Repair or repair/modification of identified discrepancies per Lockheed L-1011 Service Bulletin 093-55-031. Continue inspections after repair actions.
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Compliance Time
Before further flight for repairs detected during inspections. Repetitive inspections must be conducted as specified in the service bulletin.
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Affected Aircraft
Lockheed Model L-1011-385 series airplanes including L-1011-385-1, L-1011-385-1-14, L-1011-385-1-15, and L-1011-385-3.
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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