If the F-35 upgrades known as Technology Refresh 3 aren't ready for deliveries to resume in the third quarter, Lockheed said it may slow down production.
The first TR-3 F-35's initial checkout flight comes as the Joint Program Office hunts for a way to accelerate deliveries, perhaps using interim software.
Hundreds of people from various agencies are helping recover what’s left of the aircraft and clean up the area where a Marine F-35 jet crashed Sept. 17.