AD 90-15-10
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Lockheed Martin Corporation | L-1011-385-1 | Airworthiness Directives; LOCKHEED Model L-1011 Series Airplanes |
| aircraft | Lockheed Martin Corporation | L-1011-385-1-14 | Airworthiness Directives; LOCKHEED Model L-1011 Series Airplanes |
| aircraft | Lockheed Martin Corporation | L-1011-385-1-15 | Airworthiness Directives; LOCKHEED Model L-1011 Series Airplanes |
| aircraft | Lockheed Martin Corporation | L-1011-385-3 | Airworthiness Directives; LOCKHEED Model L-1011 Series Airplanes |
Unsafe Condition
Structural failure of the aft and mid fuselage eight-inch diameter duct compensators due to cracking in the fillet weld on the barrel assembly.
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Required Actions
Verify part numbers of the aft and mid fuselage 8-inch diameter bleed air duct compensators against Table I of Lockheed Service Bulletin 093-36-064 within 300 flight hours after the effective date. If part numbers do not coincide, inspect the fillet weld for cracks and replace the compensator if cracks are found. Replace compensators with part numbers listed in Table I to terminate repetitive inspections.
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Compliance Time
within 300 flight hours after the effective date of this AD
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Affected Aircraft
Lockheed Model L-1011 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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