Lockheed Martin F-35 grounded after failure of the aircraft s integrated power package

All 20 F-35 Lightning IIs have been grounded following a failure of the aircraft’s integrated power package (IPP).

The incident took place at about 8:30 a.m. Tuesday at Edwards Air Force Base, Calif., during a ground maintenance run of aircraft AF-4, the fourth conventional takeoff and landing version of the triservice Joint Strike Fighter. Following the failure of the IPP — which combines the functions performed by an auxiliary power unit, emergency power system and environmental controls — the crew shut down the aircraft as per standard operating procedures, according to a press release by the JSF program office.

Source:  JSF program office