AD 2004-22-24
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Boeing | 707 and 720 | Airworthiness Directives; Boeing Model 707 and 720 Series Airplanes |
Unsafe Condition
Corrosion and stress corrosion cracking of the upper and lower spar chords on the front and rear spars of the wing, which could result in reduced structural integrity of the wing.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Within 30 days after the effective date, perform a detailed inspection of the external and internal surfaces of the front and rear wing spar chords for corrosion or cracking. Within 6 months after the effective date, perform a detailed inspection and HFEC inspection of the same areas. Repair any corrosion found and apply corrosion inhibitor as specified. Repeat detailed and HFEC inspections annually.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Within 30 days for initial detailed inspection; within 6 months for detailed and HFEC inspections; annual inspections thereafter.
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Affected Aircraft
All Boeing Model 707 and 720 series airplanes, 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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