AD 58-01-05
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Lockheed Aircraft Corporation | 1049-54 | LOCKHEED Models 49-46, 149, 649, 649A, 749, 749A, and 1049-54 Aircraft |
| aircraft | Lockheed Aircraft Corporation | 149-46 | LOCKHEED Models 49-46, 149, 649, 649A, 749, 749A, and 1049-54 Aircraft |
| aircraft | Lockheed Aircraft Corporation | 49-46 | LOCKHEED Models 49-46, 149, 649, 649A, 749, 749A, and 1049-54 Aircraft |
| aircraft | Lockheed Aircraft Corporation | 649-79 | LOCKHEED Models 49-46, 149, 649, 649A, 749, 749A, and 1049-54 Aircraft |
| aircraft | Lockheed Aircraft Corporation | 649A-79 | LOCKHEED Models 49-46, 149, 649, 649A, 749, 749A, and 1049-54 Aircraft |
| aircraft | Lockheed Aircraft Corporation | 749-79 | LOCKHEED Models 49-46, 149, 649, 649A, 749, 749A, and 1049-54 Aircraft |
| aircraft | Lockheed Aircraft Corporation | 749A-79 | LOCKHEED Models 49-46, 149, 649, 649A, 749, 749A, and 1049-54 Aircraft |
Unsafe Condition
Cracks in wing skin and stringers between wing stations 125 and 215, which could lead to structural failure if not detected and repaired.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Inspect and reinspect lower wing skin and stringers between wing stations 125 and 215 using X-ray or visual methods. Repair any discovered cracks prior to further operation. Follow specific inspection intervals and methods based on aircraft model (e.g., X-ray at 2,500-hour intervals or visual at 800-hour intervals).
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Compliance required as indicated in the AD, with first inspections before 20,500 or 25,500 flight hours depending on model, and subsequent reinspections at specified intervals.
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Lockheed Models 49-46, 149, 649, 649A, 749, 749A, and 1049-54 aircraft.
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
This site is not affiliated with or endorsed by the FAA. Always verify with official sources.