BAGDAD, Ariz. -- A student pilot from Taiwan is feared dead after an F-16 fighter jet from Luke Air Force Base near Phoenix crashed Thursday in a remote area of northwestern Arizona, authorities said.
Base officials said the man with the Taiwanese Air Force was flying solo and engaged in air-to-air combat training with an instructor when his F-16 went down for still unknown reasons.
Brig. Gen. Scott Pleus, commander of the 56th Fighter Wing at Luke, said rescue crews on the ground have been unable to find the pilot, whose name wasn't released.
"All indications lead me to believe that the pilot did not survive the accident," Pleus said at a late afternoon news conference. "But until we have 100 percent confirmation, we will continue search efforts."
Pleus said the student pilot had been in a training program for the past six months at Luke, which is a major pilot-training base for the Air Force and foreign military services.
The crash occurred at about 8:45 a.m. in rugged terrain about 10 miles southwest of Bagdad in Yavapai County. The crash site, in a sparsely populated area, was located by a helicopter crew about four hours later.
Bagdad is about 85 miles northwest of Luke, which is located in the Phoenix suburb of Glendale.
Luke spokeswoman 1st Lt. Tanya Wren said the cause of the crash wasn't known. CBS affiliate KPHO reported Pleus has established an interim safety board to begin the preliminary investigation.
Arizona Department of Public Safety spokesman Quentin Mehr said the department is sending troopers, a rescue helicopter and explosive ordinance and hazardous material teams to the crash area.
Recent previous crashes involving F-16s from Luke included one on a training mission in southern New Mexico. That pilot ejected safely.
An instructor pilot and a student pilot also ejected safely in June 2013 after their two-seat F-16 hit several birds during takeoff from Luke. The jet crashed in a farm field. An Air Force investigation report said the instructor pilot was at fault because he made a rapid climbing turn after the bird strike, robbing the plane of airspeed and the ability to recover and return to the base.
In July 2008, an Ohio Air National Guard pilot died when he blacked out and his F-16 crashed in western Arizona. An Air Force investigation board found that the 26-year-old pilot made an improper turn during a dogfighting maneuver in which high gravitational forces came into play.