AD 75-12-11
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Lockheed Martin Corporation | L-1011-385-1 | LOCKHEED Model L-1011-385-1 Series Airplanes |
| aircraft | Lockheed Martin Corporation | L-1011-385-1-14 | LOCKHEED Model L-1011-385-1 Series Airplanes |
| aircraft | Lockheed Martin Corporation | L-1011-385-1-15 | LOCKHEED Model L-1011-385-1 Series Airplanes |
Unsafe Condition
Possible unwanted pitch-up while in the autoland mode due to Collins FCS-110 autopilot installation.
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Required Actions
Install a placard stating 'AUTOPILOT CMD MODE USE PROHIBITED BELOW 100' AGL' and notify flight crews of the operating limitation. Remove the limitation and placard after incorporating the auto flight pitch computer modification per Lockheed Service Bulletin 093-22-080 or FAA-approved revisions.
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Compliance Time
Effective 48 hours after receipt of this telegram
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Affected Aircraft
Lockheed Model L-1011-385-1 Series airplanes with Collins FCS-110 autopilot installed
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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