AD 98-25-15
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | The Boeing Company | MD-11 | Airworthiness Directives; McDonnell Douglas Model MD-11 Series Airplanes |
| aircraft | The Boeing Company | MD-11F | Airworthiness Directives; McDonnell Douglas Model MD-11 Series Airplanes |
Unsafe Condition
Failure of the attachment bolts on the forward and aft flanges of the No. 4 banjo fitting and the pylon carry-through cap due to fatigue cracking, leading to reduced controllability during flight and ground operation.
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Required Actions
Within 1,500 landings after the effective date, perform an external visual inspection for attachment failures. Repeat inspections every 1,500 landings until terminating actions are done. If failed attachments are found, perform eddy current inspections and replace attachments. Within 5 years, perform eddy current inspections to detect cracking; replace attachments if no cracking found, repair and replace if cracking detected.
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Compliance Time
Within 1,500 landings after the effective date of this AD, and within 5 years after the effective date of this AD.
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Affected Aircraft
McDonnell Douglas Model MD-11 series airplanes listed in Service Bulletin MD11-55-013, Revision 03, dated May 15, 1998, certificated 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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