AD 76-16-06
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Lockheed Martin Corporation | L-1011-385-1 | LOCKHEED-CALIFORNIA Model L-1011-385 Series Airplanes |
| aircraft | Lockheed Martin Corporation | L-1011-385-1-14 | LOCKHEED-CALIFORNIA Model L-1011-385 Series Airplanes |
| aircraft | Lockheed Martin Corporation | L-1011-385-1-15 | LOCKHEED-CALIFORNIA Model L-1011-385 Series Airplanes |
| aircraft | Lockheed Martin Corporation | L-1011-385-3 | LOCKHEED-CALIFORNIA Model L-1011-385 Series Airplanes |
Unsafe Condition
Missing Visco Jet Restrictors, P/N 19XVC112DN1 or P/N VXCA2501112D, in the A and B rudder control system could cause serious degradation of airplane flight performance.
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Required Actions
Discontinue training flights and do not dispatch airplanes with the C system main pump or C system air turbine motor pump inoperative until inspections are completed. Inspect for missing Visco Jet Restrictors by following specific hydraulic pressure checks and procedures outlined in steps (b)(1)-(b)(15). Install missing Visco Jet Restrictors prior to further flight.
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Compliance Time
Within the next 10 additional hours time in service or 24 hours after receipt of this telegraphic AD, whichever occurs earlier, for discontinuation of training flights and dispatch restrictions. The inspection must be completed within the next 50 additional hours time in service after receipt of this telegraphic AD.
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Affected Aircraft
Lockheed L-1011-385 Series airplanes certificated in all categories, including models 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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