A U.S. Air Force F-35A made an unplanned landing roughly 300 mi. from the Lockheed Martin final assembly facility in Fort Worth after the pilot received an “inflight caution warning,” according to company spokesman Michael Rein.

The pilot landed the aircraft safely at Lubbock International Airport after a 12:40 p.m. local time takeoff from the Fort Worth facility.

The aircraft was being flown to Nellis AFB, Nev., Rein says, as a routine delivery. The aircraft is tail number AF-23, according to program sources.

Rein says a Lockheed Martin team is on site at Lubbock airport to support the aircraft. Officials will identify the cause of the warning, repair the aircraft and ready it for flight, Rein says.