Two Greek fighter jets with three crew members on board crashed in mid-air during a training exercise south of Crete on Thursday, the air force said.
Rescue crews found two of the pilots, who were not believed to have been seriously injured.
They were being transported to a nearby military hospital for checks, the air force said.
Crews were searching for a third crew member.
The F-16 planes - one a single-seater and one a double-seater - had been part of a formation of four planes on a training mission when they collided over the sea off the southern coast of Crete in the early afternoon, the air force said.