At 11.50 the crash airplane departed it's base at Suwon,south of Seoul and around 40 miniutes later the jet struck a mountain 120 Km south of Seoul.Both crew were killed.
This jet was one of 17 surviving RF-4C of the 131st TRS of the 39th TRG that operate from Suwon.
Reportedly this was the second airplane crash from the South Korean military in 24 hours.