AD 77-12-04
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | The Boeing Company | DC-10-10F | Airworthiness Directives; MCDONNELL DOUGLAS DC-10-10F and DC-10-30F Airplanes |
| aircraft | The Boeing Company | DC-10-30F (KC-10A, KDC-10) | Airworthiness Directives; MCDONNELL DOUGLAS DC-10-10F and DC-10-30F Airplanes |
Unsafe Condition
Operational errors could result in dispatch of an aircraft with the upper cargo door unlatched or unlocked.
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Required Actions
Install a lock mechanism viewing window and a new instruction placard per Service Bulletin 52-120. Either install an upper cargo door vent door with blockers per Service Bulletin 52-137, or verify door alignment and lock pin engagement through the viewing port, and secure the door by replacing the pip pin with a bolt and locknut, securing circuit breakers, or removing/disconnecting the lock tube actuator. Equivalent modifications may be used with FAA approval.
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Compliance Time
within the next 1000 hours time in service after the effective date of this AD
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Affected Aircraft
MCDONNELL DOUGLAS DC-10-10F and DC-10-30F airplanes certificated in all categories, including KC-10A and KDC-10 models.
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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