AD Amdt-39-10027
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 due to an incorrectly installed nut could result in failure of the engine pylon and consequent engine separation from the wing.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Increase intervals between inspections of access doors and midspar/spring beam fuse pins. Decrease inspection frequency based on new manufacturer data.
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Boeing Model 747 series airplanes subject to the existing AD requiring inspections of engine pylon access doors and fuse pins.
AI-generated summary from the source AD text. Verify against the official source before acting.
Source: Official FAA Source ↗
Retrieved: Apr 6, 2026
Rights: U.S. Government Public Domain
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