AD 91-14-03
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | The Boeing Company | MD-11 | Airworthiness Directives; MCDONNELL DOUGLAS MD-11 and MD-11F Series Airplanes |
| aircraft | The Boeing Company | MD-11F | Airworthiness Directives; MCDONNELL DOUGLAS MD-11 and MD-11F Series Airplanes |
Unsafe Condition
Fuel leakage from the tail tank fuel distribution pipe assembly shroud coupling when the shroud system contains fuel.
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Required Actions
Within 30 flight hours after the effective date, visually inspect the tail tank fuel distribution pipe assembly for correct pipe flange position per SB A28-14. If flange measurement is out of specified dimensions, reposition the pipe assembly or install a shroud support bracket before further flight. Installation of the bracket terminates further requirements of paragraph (a).
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Compliance Time
Within 30 flight hours after the effective date of this AD, and thereafter at intervals not to exceed 100 flight hours.
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Affected Aircraft
Model MD-11 and MD-11F series airplanes with manufacturer's fuselage numbers 447 through 449, 451 through 461, and 463.
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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