AD 62-21-04
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Lockheed Martin Aeronautics Company | 1649A-98 | LOCKHEED Model 1649A Aircraft |
Unsafe Condition
Chordwise cracks on the wing lower milled skin at wing Station 590 emanating from the aft edge of the panel through the rear beam attachment holes.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Inspect the external lower surface of the aft skin panels (P/N 472066) from wing Station 580 through 600 using close visual or dye penetrant methods. Repair any cracks prior to further flight per Lockheed Service Bulletin No. 73 or approved method. Discontinue inspections after repair or reinforcement per the service bulletin.
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Compliance Time
Within the next 400 hours' time in service after November 2, 1962, unless already done within the past 600 hours' time in service, and thereafter every 1,000 hours' time in service.
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Affected Aircraft
Lockheed Model 1649A Aircraft, all serial numbers.
AI-generated summary from the source AD text. Verify against the official source before acting.
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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