AD 87-04-16
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Lockheed Martin Corporation | L-1011-385-1 | LOCKHEED-CALIFORNIA COMPANY Model L-1011 Series Airplanes |
| aircraft | Lockheed Martin Corporation | L-1011-385-1-14 | LOCKHEED-CALIFORNIA COMPANY Model L-1011 Series Airplanes |
| aircraft | Lockheed Martin Corporation | L-1011-385-1-15 | LOCKHEED-CALIFORNIA COMPANY Model L-1011 Series Airplanes |
| aircraft | Lockheed Martin Corporation | L-1011-385-3 | LOCKHEED-CALIFORNIA COMPANY Model L-1011 Series Airplanes |
Unsafe Condition
Loss of throttle control caused by an unstowed left rear fan cowl door support on carbon fibre cowls.
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Required Actions
Modify the fan cowl support strut stowage mechanism in accordance with Rolls-Royce Service Bulletin RB211-71-8220 or later revisions approved by the FAA. Alternate means of compliance may be used if approved by the FAA.
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Compliance Time
within 12 months after the effective date of this AD
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Affected Aircraft
Lockheed Model L-1011 series airplanes equipped with carbon fibre cowls, 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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