During the crash investigation, certain fuel tubes were identified as a potential problem, largely involving aircraft built before 2015. Until 2015, two companies manufactured the tubes, and the problem involves just one of them. If the aircraft has those particular tubes, they will be replaced. If the aircraft has good fuel tubes, it will be allowed to begin immediately flying again.
The F-35 program office said the inspections should be completed in one or two days. Depending on the availability of parts, the fuel tube can be replaced quickly.
John Thomas, spokesman for engine-maker Pratt & Whitney, based in Connecticut, said the company is supporting the Marine Corps investigation into the crash. Because of the ongoing investigation, he said he had no comment on the specifics of the flight disruption.