AD 75-24-05
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
Potential fire hazard due to massive fuel spillage from Tank One into the center section caused by a defective fuel line tube assembly, P/N 1515816-121, with manufacturing date identification number 533X190.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Perform a close visual check by a flight crew member or qualified person of the drain mast beneath the hydraulic service center for fuel leakage every day until the modification is done. Replace the fuel line tube assembly P/N 1515816-121 with P/N 1515816-179 or a unit with a different manufacturing date ID within 300 hours after receiving the AD telegram.
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Compliance Time
Within the next day after receipt of this telegram, and thereafter at intervals not to exceed one day until modification (B) is done. Paragraph (B) must be completed within 300 hours additional time in service after receipt.
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Affected Aircraft
Lockheed-California Company L-1011-385 series airplanes except serial numbers 193( )-1004, 193( )-1005, and 193( )-1007 through 193( )-1023 inclusive, with fuel line tube assembly P/N 1515816-121 and manufacturing date ID 533X190.
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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