AD 99-02-05
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Lockheed Martin Corporation | L-1011-385-1 | Airworthiness Directives; Lockheed Model L-1011-385-1 Series Airplanes |
| aircraft | Lockheed Martin Corporation | L-1011-385-1-14 | Airworthiness Directives; Lockheed Model L-1011-385-1 Series Airplanes |
| aircraft | Lockheed Martin Corporation | L-1011-385-1-15 | Airworthiness Directives; Lockheed Model L-1011-385-1 Series Airplanes |
Unsafe Condition
Fatigue cracking of the primary and secondary drive shafts of the galley lift system could result in complete fracturing of the secondary shaft, causing the galley lift to drop to the bottom of the shaft and potentially injuring crewmembers.
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Required Actions
Within 18 months after the effective date, modify the power drive units and lower drive sprocket assemblies of the galley lift system per Lockheed Service Bulletin 093-25-294, Revision 2. Prohibit installation of unmodified power drive units (Lockheed P/N 671980-191) or lower drive sprocket assemblies (Lockheed P/N 671980-171) unless modified as specified.
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Compliance Time
Within 18 months after the effective date of this AD
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Affected Aircraft
Lockheed Model L-1011-385-1, L-1011-385-1-14, and L-1011-385-1-15 series airplanes equipped with lower deck galleys, 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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