AD 75-11-10
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | The Boeing Company | DC-10-10 | Airworthiness Directives; MCDONNELL DOUGLAS DC-10-10, -10F, -30, -30F, and -40 Series Airplanes |
| aircraft | The Boeing Company | DC-10-10F | Airworthiness Directives; MCDONNELL DOUGLAS DC-10-10, -10F, -30, -30F, and -40 Series Airplanes |
| aircraft | The Boeing Company | DC-10-30 | Airworthiness Directives; MCDONNELL DOUGLAS DC-10-10, -10F, -30, -30F, and -40 Series Airplanes |
| aircraft | The Boeing Company | DC-10-30F (KC-10A, KDC-10) | Airworthiness Directives; MCDONNELL DOUGLAS DC-10-10, -10F, -30, -30F, and -40 Series Airplanes |
| aircraft | The Boeing Company | DC-10-40 | Airworthiness Directives; MCDONNELL DOUGLAS DC-10-10, -10F, -30, -30F, and -40 Series Airplanes |
Unsafe Condition
Inadvertent opening of Type I passenger doors (most forward left and right doors) due to damage to the close lock torque tube spline, improper engagement of the close lock, or incorrect installation of components such as the slide catch, stop plate, or washers.
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Required Actions
Inspect and repair or replace the close lock torque tube spline, visually inspect the close lock and spring condition, functionally operate the door to ensure proper engagement, and inspect the air storage bottle control valve lever position. Additionally, install specified parts (ABA8023-1/2 slide catches, ABA8024-1/2 stop plates, WBA7003-5/-7 washers) and perform recurring inspections at specified intervals. Operators must also establish pre-flight checks or alternative methods to ensure door handles are undisturbed and close locks are properly engaged.
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Compliance Time
Compliance required not later than 48 hours after the effective date of this AD, unless already accomplished within 10 days prior or under prior ADs. Other actions have varying deadlines: within seven days, 1500 hours' time in service, 4500 hours' time in service, or 3000 hours' time in service after March 17, 1976.
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Affected Aircraft
Douglas Model DC-10-10, -10F, -30, -30F (KC-10A, KDC-10), and -40 Series airplanes, as indicated in Douglas Service Bulletins 52-139, 52-140, AOL 10-814, or later FAA-approved revisions.
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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