AD 2003-16-12
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Boeing | 747 | Airworthiness Directives; Boeing Model 747 Series Airplanes |
Unsafe Condition
Fatigue cracking of the front spar web of the wing, which could result in fuel leaking onto an engine and a consequent fire.
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Required Actions
Perform repetitive inspections to detect cracking of the front spar web of the wing, including detailed, ultrasonic, and high frequency eddy current (HFEC) inspections, in accordance with Boeing Alert Service Bulletin 747-57A2311. Repeat inspections at intervals not exceeding 2,000 flight cycles until accomplishment of inspections required by paragraph (e) of this AD. Optional inspections from AD 2000-25-12 are considered acceptable for compliance.
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Compliance Time
Within 18 months after January 30, 2001, or prior to the accumulation of 13,000 total flight cycles or 30,000 total flight hours, whichever occurs first.
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Affected Aircraft
Boeing Model 747 series airplanes, as listed in Boeing Service Bulletin 747-57A2311, Revision 2, dated February 21, 2002; 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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