AD 2004-12-07
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Boeing | 757 | Airworthiness Directives; Boeing Model 757 Series Airplanes Equipped With Rolls Royce RB211 Engines |
Unsafe Condition
Fatigue cracking in primary strut structure and consequent reduced structural integrity of the strut.
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Required Actions
For certain airplanes, repetitive detailed inspections of certain aft bulkhead fasteners for loose or missing fasteners, with corrective action if necessary. For other airplanes, a one-time detailed inspection of the middle gusset of the inboard side load fitting for proper alignment and realignment if necessary; a one-time eddy current inspection of certain fastener holes for cracking, with repair if necessary; and a detailed inspection of certain fasteners for loose or missing fasteners, with replacement with new fasteners if necessary.
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Compliance Time
Within 6,000 flight cycles or 36 months, whichever occurs first, for repetitive inspections.
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Affected Aircraft
Boeing Model 757 series airplanes equipped with Rolls Royce RB211 engines.
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Source: Official FAA Source ↗
Retrieved: Apr 6, 2026
Rights: U.S. Government Public Domain
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