SEOUL, April 1: Two aircraft of South Korea's air force collided in mid-air on Friday during a training exercise, killing three pilots, with a fourth missing in the rare incident, authorities said.
More than 30 firefighters and rescuers have begun a search at the crash site, the Yonhap news agency said, citing fire officials.
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The crash happened about 6 km (3.7 miles) south of the KT-1 airplanes' base in the southeastern city of Sacheon, at about 1:37 p.m.(0437 GMT), the air force said.
"Despite their attempts at an emergency escape, three pilots died and one remains missing," it said in a statement, adding that it had formed a team to determine the cause of the accident and damage.
The KT-1 is a single-engine basic trainer and light attack aircraft jointly built by the state-run Agency for Defense Development and a contractor, Korea Aerospace Industries.
