AD 91-07-15
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | The Boeing Company | DC-10-15 | Airworthiness Directives; McDONNELL DOUGLAS DC-10-15, -30, -30F, and KC-10A (Military) Series Airplanes |
| aircraft | The Boeing Company | DC-10-30 | Airworthiness Directives; McDONNELL DOUGLAS DC-10-15, -30, -30F, and KC-10A (Military) Series Airplanes |
| aircraft | The Boeing Company | DC-10-30F (KC-10A, KDC-10) | Airworthiness Directives; McDONNELL DOUGLAS DC-10-15, -30, -30F, and KC-10A (Military) Series Airplanes |
Unsafe Condition
Failure of the engine forward mount truss assembly on pylons 1 and 3 due to cracks in the horizontal and vertical flanges of the truss fittings (AUB7000-501 and -502).
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Required Actions
Conduct eddy current inspections of the engine forward mount truss assembly on pylons 1 and 3 per A54-99 and A54-103. Install repair straps or enlarge fastener holes as needed. Replace truss fittings with AUB7000-503/-504 within specified intervals.
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Compliance Time
Prior to the accumulation of 9,000 landings or 30,000 flight hours, whichever occurs first, or within 6 years after the effective date of this AD.
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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