AD 47-49-12
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Lockheed Aircraft Corporation | 49-46 | LOCKHEED Models 49, 649, and 749 |
| aircraft | Lockheed Aircraft Corporation | 649-79 | LOCKHEED Models 49, 649, and 749 |
| aircraft | Lockheed Aircraft Corporation | 749-79 | LOCKHEED Models 49, 649, and 749 |
Unsafe Condition
Cracks in the vicinity of the forward hinge attachments of the metal aft doors of the main landing gear.
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Required Actions
Inspect the metal aft doors of the main landing gear for signs of cracks in the vicinity of the forward hinge attachments at periods not to exceed 250 hours. Install satisfactory reinforcements and doublers when cracks are found. Discontinue inspections after installing doublers if doors are not cracked.
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Compliance Time
at periods not to exceed 250 hours
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Affected Aircraft
Lockheed Aircraft Corporation Models 49, 649, and 749 serials incorporating Short Type Metal Aft Doors for the Main Landing Gear.
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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