AD 92-19-14
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | The Boeing Company | MD-11 | Airworthiness Directives; MCDONNELL DOUGLAS MD-11 Series Airplanes |
| aircraft | The Boeing Company | MD-11F | Airworthiness Directives; MCDONNELL DOUGLAS MD-11 Series Airplanes |
Unsafe Condition
Skin and doubler fatigue cracking could cause loss of fail safe capability of the tail pylon structure.
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Required Actions
Visually inspect for cracks on the tail pylon skin and interior doubler around the pressure relief door, and install either the interim or permanent modification as specified. If cracks are detected, install the permanent modification with external doublers, internal doubler, frame, and stiffener. Group II airplanes must conduct dye penetrant inspection and install permanent modification based on crack detection.
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Compliance Time
Prior to the accumulation of 2,100 landings or within 60 days after the effective date of this AD, whichever occurs later (for Group I). For Group II, prior to the accumulation of 6,000 landings or within 60 days after the effective date of this AD, whichever occurs later.
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Affected Aircraft
McDonnell Douglas MD-11 series airplanes listed in Service Bulletin 54-17 (dated February 24, 1992, and Revision 1 dated July 16, 1992), certified 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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