AD 65-09-04
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Lockheed Martin Corporation | 188A | LOCKHEED Models 188A and 188C Series Aircraft |
| aircraft | Lockheed Martin Corporation | 188C | LOCKHEED Models 188A and 188C Series Aircraft |
Unsafe Condition
Cracks in the wing upper surface in the area of the main landing gear rib forgings, some of which have extended out from previous crack repairs and from reinforcements.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Inspect the external surface of the upper wing planks visually for cracks in specified areas; inspect for cracks by dye penetrant technique in specific plank areas; inspect the tang of the No. 4 plank for vertical cracks using ultrasonic or visual internal inspection. Repair any cracks before further flight, and reinspect repaired areas within 1,400 landings and at intervals not exceeding 1,400 landings. Discontinue inspections after incorporating specified reinforcements.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Within the next 700 landings after the effective date of this AD, unless already accomplished within the last 700 landings prior to the effective date.
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Lockheed Models 188A and 188C Series 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.