AD 75-18-03
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Lockheed Martin Corporation | 382 | LOCKHEED Model 382 Series Airplanes |
| aircraft | Lockheed Martin Corporation | 382B | LOCKHEED Model 382 Series Airplanes |
| aircraft | Lockheed Martin Corporation | 382E | LOCKHEED Model 382 Series Airplanes |
| aircraft | Lockheed Martin Corporation | 382F | LOCKHEED Model 382 Series Airplanes |
| aircraft | Lockheed Martin Corporation | 382G | LOCKHEED Model 382 Series Airplanes |
Unsafe Condition
Cracks in the outer wing lower forward spar caps at OWS 54 and 108.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Eddy current inspect the outer wing lower forward spar caps at OWS 54 and 108 in accordance with Hercules Airfreighter Inspection procedures SMP515-A Card No. SP-62, revised August 11, 1975. If cracks are found, contact the Chief, Engineering and Manufacturing Branch, FAA, Southern Region, Atlanta, Georgia 30320. Install preventive modification per Lockheed Service Bulletin 382-187 or equivalent approved method before accumulating 30,000 flight hours.
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Compliance Time
Within the next 50 hours time in service after the effective date of this AD, and at intervals not exceeding 3,400 hours time in service from the last inspection until 20,000 hours (without ECP 954) or 24,000 hours (with ECP 954), after which intervals not exceeding 1,700 hours are required.
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Affected Aircraft
Lockheed Model 382 series airplanes, serial numbers 3946 and 4101 through 4298 with 6,300 or more total hours, and serial numbers 4299 through 4541 with 9,450 or more total hours on the effective date of Amendment 39-3157.
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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