Air Force grounds 15 F-35As over coolant line flaws
The Air Force on Friday grounded 13 of its new F-35A aircraft after discovering that insulation around coolant lines inside the fuel tanks was peeling and crumbling. Two F-35As belonging to Norway were also grounded with the same damaged lines, the Air Force said.
The faulty insulation was found just weeks after the Air Force brought its first F-35A stealth fighters online in August.
Air Force personnel conducting routine maintenance discovered the problem, which affects 57 aircraft – including 42 in production in Fort Worth, Texas.
Air Force spokeswoman Ann Stefanek said the problem stemmed from faulty parts from one of two subcontractors used by Lockheed Martin.
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