AD 2004-25-05
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Boeing | 747-100 | Airworthiness Directives; Boeing Model 747-100, 747-100B, 747-100B SUD, 747-200B, 747-200C, 747-200F, 747-300, 747SP, and 747SR Series Airplanes |
Unsafe Condition
Fracture of the front spar chord assembly at each strut location, which could result in loss of the strut upper link load path and consequent fracture of the diagonal brace, leading to in-flight separation of the strut and engine from the airplane.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Inspect the strut front spar chord assembly at each strut location using detailed and high frequency eddy current (HFEC) inspections to detect cracks and fractures. Repair any identified cracks or fractures using an approved method or data that meet the type certification basis of the airplane, as specified in the AD.
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Compliance Time
Within 12 months of the effective date of the AD.
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Affected Aircraft
Boeing Model 747-100, 747-100B, 747-100B SUD, 747-200B, 747-200C, 747-200F, 747-300, 747SP, and 747SR series airplanes, as listed in Boeing Alert Service Bulletin (ASB) 747-54A2224, dated September 30, 2004, certificated in any category.
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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