AD 94-26-15
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Lockheed Martin Corporation | 382 | Lockheed Aeronautical Systems Company Models 382, 382B, 382E, 382F, and 382G Series Airplanes |
| aircraft | Lockheed Martin Corporation | 382B | Lockheed Aeronautical Systems Company Models 382, 382B, 382E, 382F, and 382G Series Airplanes |
| aircraft | Lockheed Martin Corporation | 382E | Lockheed Aeronautical Systems Company Models 382, 382B, 382E, 382F, and 382G Series Airplanes |
| aircraft | Lockheed Martin Corporation | 382F | Lockheed Aeronautical Systems Company Models 382, 382B, 382E, 382F, and 382G Series Airplanes |
| aircraft | Lockheed Martin Corporation | 382G | Lockheed Aeronautical Systems Company Models 382, 382B, 382E, 382F, and 382G Series Airplanes |
Unsafe Condition
Insufficient distance between the center of the outermost fastener on the kingpin riser and the edge of the riser can adversely affect the fatigue resistance of the outer wing assembly, leading to structural failure of the lower surface of the outer wing due to fatigue cracks in the kingpin riser.
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Required Actions
Perform an ultrasonic inspection of the kingpin riser to determine fastener placement. If fasteners are within 0.31 inch of the edge, conduct repetitive ultrasonic inspections for cracks at intervals not exceeding 7,400 flight hours and repair if necessary. Operators may seek alternative methods of compliance approved by the FAA.
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Compliance Time
Within 30 days after the effective date of this AD, or prior to the accumulation of 18,000 total flight hours, whichever occurs later. For cases where fasteners are out of limits, inspections must be done prior to the applicable threshold in the service bulletin or prior to further flight if exceeded.
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Affected Aircraft
Lockheed Aeronautical Systems Company Models 382, 382B, 382E, 382F, and 382G series airplanes as listed in Hercules Service Bulletin 382-57-74 (82-688), dated January 31, 1994, certificated in any category.
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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