US Navy maintains F-35 jets grounding order

[FAIRFORD, England] The US Navy maintained a grounding order for F-35 B-model and C-model fighter jets built by Lockheed Martin Corp, saying that it was still not clear what caused a massive engine failure on an Air Force F-35 jet last month.

The fleetwide grounding order kept three Marine Corps F-35 B-model jets and one British F-35B from travelling to Britain for widely publicised appearances at two air shows. "At this time, I do not have suf…