"The flights of MiG-29 fighters have been suspended until further orders," the spokesman said.
A MiG-29 fighter crashed at 10:45 Moscow time (06:45 GMT) on Friday 60 kilometers (37 miles) from the Domna airfield in the Chita Region during a regular training flight.
The pilot ejected safely and was later hospitalized. He is in a satisfactory condition.
The Air Force said there were no reports of casualties or damage on the ground and a special investigation team had been sent to the crash site.
Friday's crash is the first reported occurrence in Russia involving a MiG-29 fighter in 2008, although two MiG-29s crashed in Kazakhstan and Azerbaijan earlier this year in separate incidents.
Last year, two Russian Air Force MiG-29 fighters were involved in a mid-air collision over the Rostov Region. Both pilots bailed out safely.
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The main event of the third day of the 11th meeting of the Valdai International Discussion Club in Sochi was the closing session with President Vladimir Putin. The atmosphere was calm and open, despite the current political tensions and the Russia-West confrontation. The Russian president said that it corresponded to the spirit of the Valdai Club.