Summary
We propose to adopt a new airworthiness directive (AD) for all Lockheed Martin Corporation/Lockheed Martin Aeronautics Company Model 382, 382B, 382E, 382F, and 382G airplanes. This proposed AD would require repetitive inspections for any damage of the lower surface of the center wing box, and corrective actions if necessary. This proposed AD results from reports of fatigue cracks of the lower surface of the center wing box. We are proposing this AD to detect and correct such cracks, which could result in the structural failure of the wings.