AD Amdt-39-10264
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Boeing | 747-100 | Airworthiness Directives; Boeing Model 747-100, 747-200, 747-300, 747SR, and 747SP Series Airplanes |
Unsafe Condition
Fatigue cracking of the longeron splice fittings at stringer 11 on the left and right sides at body station 2598 could result in reduced controllability of the horizontal stabilizer.
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Required Actions
Perform a one-time detailed visual inspection for cracking of the longeron splice fittings at stringer 11, left and right sides at body station 2598. Replace any cracked fitting with a new fitting prior to further flight. Actions must be done per Boeing Alert Service Bulletin 747-53A2410, Rev 2, including Addendum.
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Compliance Time
Within 90 days after December 29, 1997, or before accumulating 22,000 total flight cycles or 78,000 total flight hours, whichever comes first.
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Affected Aircraft
Boeing Model 747-100, 747-200, 747-300, 747SR, and 747SP series airplanes with line positions 201 through 886 inclusive, certificated in any category.
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Source: Official FAA Source ↗
Retrieved: Apr 6, 2026
Rights: U.S. Government Public Domain
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