National

August 4, 2011

All F-35 fighter jets grounded due to power system problems

For the third time in less than a year, the Pentagon has grounded all F-35 joint strike fighters because of a mechanical problem. The 20 operational test and training aircraft were ordered parked Wednesday until engineers and technicians can find why a power system that starts and cools the aircraft failed during an engine ground test Tuesday at Edwards Air Force Base in California.

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