AD 78-20-10
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | The Boeing Company | DC-10-10 | Airworthiness Directives; MCDONNELL DOUGLAS DC-10-10, -10F, -30, -30F, and -40 Airplanes |
| aircraft | The Boeing Company | DC-10-10F | Airworthiness Directives; MCDONNELL DOUGLAS DC-10-10, -10F, -30, -30F, and -40 Airplanes |
| aircraft | The Boeing Company | DC-10-30 | Airworthiness Directives; MCDONNELL DOUGLAS DC-10-10, -10F, -30, -30F, and -40 Airplanes |
| aircraft | The Boeing Company | DC-10-30F (KC-10A, KDC-10) | Airworthiness Directives; MCDONNELL DOUGLAS DC-10-10, -10F, -30, -30F, and -40 Airplanes |
| aircraft | The Boeing Company | DC-10-40 | Airworthiness Directives; MCDONNELL DOUGLAS DC-10-10, -10F, -30, -30F, and -40 Airplanes |
Unsafe Condition
Loss of related powered flight controls due to loss of fluid through brake return line failure.
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Required Actions
Revise hydraulic system 1 and 3 by installing three check valves and, when applicable, new hydraulic piping in accordance with Service Bulletin A29-113, Revision 2. Equivalent modifications may be used when approved by the Chief, Aircraft Engineering Division, FAA Western Region.
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Compliance Time
within the next 1800 hours time in service after the effective date of this AD
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Affected Aircraft
MCDONNELL DOUGLAS DC-10-10, -10F, -30, -30F (KC-10A, KDC-10), and -40 airplanes certificated in all categories.
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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