AD Amdt-39-9868
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Boeing | 747 | Airworthiness Directives; Boeing Model 747 Series Airplanes |
Unsafe Condition
Migration of the midspar/spring beam fuse pin on the engine pylon could result in failure of the engine pylon and consequent separation of the engine from the wing.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Conduct repetitive inspections of access doors to detect cracks on the external surface; inspect each midspar/spring beam fuse pin for protrusion beyond its mating nut by a specified distance; repair any discrepancies found.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Before further flight
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Affected Aircraft
Boeing Model 747 series airplanes
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Source: Official FAA Source ↗
Retrieved: Apr 6, 2026
Rights: U.S. Government Public Domain
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