"An F-7P Fighter Aircraft, while on a routine operational training mission, crashed near Esa Khel town" in Mianwali district of Punjab, a statement issued by PAF said.
The pilot of the aircraft ejected safely and no loss of civilian life or property was reported on ground, it said.
The cause of the crash was not known immediately.
A board of inquiry has been ordered by the Air Headquarters.
Accidents during training are a routine in Pakistan and several small aircraft have been damaged in the past.