AD 2006-24-02
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Boeing | 747-100 | Airworthiness Directives; Boeing Model 747-100, 747-100B, 747-200B, 747-200C, 747-200F, 747SR, and 747SP Series Airplanes |
Unsafe Condition
Cracking discovered in a skin lap joint that was previously inspected using the eddy current method, leading to disbonding and subsequent cracking of the skin panels.
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Required Actions
Conduct an additional inspection of areas that may have Alodine-coated rivets installed, and repair if necessary. Continue to require repetitive inspections to detect cracks at certain stringer fastener locations, and repair if necessary. For certain airplanes, continue to require modification in certain areas where reports indicate that cracking was prevalent.
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Compliance Time
Within 1,000 flight cycles after January 22, 1991, or prior to the accumulation of 12,000 flight cycles, whichever occurs later.
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Affected Aircraft
Boeing Model 747-100, 747-100B, 747-200B, 747-200C, 747-200F, 747SR, and 747SP series airplanes, certificated in any category; line numbers 001 through 430 inclusive.
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Source: Official FAA Source ↗
Retrieved: Apr 4, 2026
Rights: U.S. Government Public Domain
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