The BELL AH-1 Cobra helicopter had lost its contact with the terminal during its routine flight.
“The remains of the helicopter were discovered and no survivors were found,” the army said in a statement, according to Reuters news agency.
But the cause of the incident is still unknown.
The air force has ordered an investigation into the incident and all Bell AH-1 Cobra helicopters have been grounded “until the circumstances of the accident are clarified,” the army said.
Israeli media said the remains of the aircraft were found in a wheat field near an Israeli kibbutz and identification of the bodies was under way.