AD 2003-17-06
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Boeing | 747-100 | Airworthiness Directives; Boeing Model 747-100, 747SP, and 747SR Series Airplanes |
Unsafe Condition
Fatigue cracking between the seal ribs of the front spar web of the wing and outboard of the outboard seal rib to front spar station inboard (FSSI) 711, which could result in fuel leakage into the area of the inboard engines, and consequent increased risk of a fire.
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Required Actions
Inspect for fatigue cracking between the seal ribs of the front spar web of the wing and outboard of the outboard seal rib to FSSI 711. Repair any cracked structure found during the inspection. Optionally, modify a certain area as specified.
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Compliance Time
Within the compliance time specified in Tables 1 through 3 of Figure 1 of the Accomplishment Instructions or Appendix A of the referenced service bulletin.
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Affected Aircraft
Boeing Model 747-100, 747SP, and 747SR series airplanes.
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Source: Official FAA Source ↗
Retrieved: Apr 6, 2026
Rights: U.S. Government Public Domain
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