SUNDAY TIMES WEB DESK:The aircraft, less than a year old, was the first F-35 assembled in Japan and was aloft for only 28 minutes on Tuesday before contact was lost, a defense official said. The plane had logged a total of 280 hours in the air, he added.

It was only the second F-35 to crash since the aircraft’s first flight in 2006 and could reignite concern about the F-35 having only one engine.

Manufacturer Lockheed Martin is competing for orders in Finland and Switzerland against the twin-engined Eurofighter Typhoon and Boeing F/A-18E/F jet.

The accident could influence Switzerland’s decision, but Finland could still pick the F-35 as it is close to Russia, said Justin Bronk, a research fellow at the Royal United Services Institute in London.

“I would be surprised if there was a common catastrophic fault hidden away in the F-35A,” he added. “It’s pretty unlikely given the large number of flight hours already completed.”