FORT WORTH, Texas, Nov. 18 (UPI) -- Lockheed engineers in Fort Worth, Texas, have discovered a potentially significant problem with one model of its F-35 joint strike fighter, the company said.
Lockheed said the engineering staff found cracks in the rear bulkhead, a major structural part weighing about 300 pounds, of an F-35B ground test plane undergoing fatigue testing, the Fort Worth Star Telegram reported Wednesday.