AD 2000-12-16
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Boeing | 747 | Airworthiness Directives; Boeing Model 747 Series Airplanes |
Unsafe Condition
Fatigue cracking or loose/missing fasteners in the aft torque bulkheads of the outboard nacelle struts could result in failure of an outboard nacelle strut diagonal brace load path and possible separation of the nacelle from the wing.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Inspect for fatigue cracking or loose/missing fasteners in the aft torque bulkheads of the outboard nacelle struts, repair as necessary, and install doublers and fillers on the forward side of the lower spar fitting as a terminating action.
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Compliance Time
Within 56 months after July 28, 1995, for the nacelle strut modifications (as per AD 95-13-07).
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Affected Aircraft
Boeing Model 747 series airplanes listed in Groups 1, 2, and 5 of Boeing Alert Service Bulletin 747-54A2184, Revision 1, dated May 6, 1999.
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Source: Official FAA Source ↗
Retrieved: Apr 6, 2026
Rights: U.S. Government Public Domain
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