USAF grounds 15 F-35s due to avionics cooling line issue | IHS Jane's 360

The JPO in 2014 grounded the F-35 fleet over an engine defect, but this is the first time that the USAF has had to make such a move. It comes just a little over a month after the service declared its jets combat-ready, but it does not appear that this incident will affect the service's ability to deploy the aircraft.