The pilot ejected safely while the plane went down near Mianwali, a small town in southern region of Punjab province.
"PAF reports with regret that a PAF F-7PG aircraft, while on a routine operational training mission, crashed near Mianwali. The pilot of the aircraft ejected safely," a PAF statement said.
No loss of life and property has been reported in the crash, the PAF said.
A board of inquiry has been ordered to determine the cause of the accident.
The trainer FT-7PGs came later. About eight or nine F- 7PGs/FT-7PGs have been lost during the 15 years in service, which is considered within limits of air crashes.
PAF still has more than 50 of these Chinese-made aircraft.