AD 45-04-01
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | The Boeing Company | 314 | BOEING 314 Aircraft |
| aircraft | The Boeing Company | A-314 | BOEING 314 Aircraft |
Unsafe Condition
Stress corrosion and fatigue cracks in 24SRT aluminum alloy tubular members of the wing spar structure could lead to structural failure.
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Required Actions
Inspect visible portions of accessible 24SRT members every 250 hours or 60 days, and inaccessible areas via x-ray annually. Inspect for fatigue cracks every 35 flight hours. Repair or replace members exceeding crack limits (e.g., over 8 inches, transverse beyond rivet diameter). Maintain crack records and submit to FAA.
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Compliance Time
Before further flight unless otherwise specified by inspection periods: 250 hours/60 days, 750 hours/120 days, annually, and 35 flight hours.
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Affected Aircraft
Boeing 314 and A-314 aircraft.
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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