Jeju-Jungseok Airport Training Flight Collision with Mt Hallasan (HL5204)

Incident Overview and Flight Details A crew was conducting a local training exercise at Jeju-Jungseok Airport when the aircraft collided with the eastern side of Mt Hallasan. The mountain has an elevation of 1,950 meters. The accident occurred while the aircraft was on approach via the 'White 2' airway. ## Operational Sequence During the approach, the captain canceled the instrument flight rules (IFR) flight plan and continued the flight under visual flight rules (VFR). The collision took place at an altitude of 2,300 feet. The wreckage was later located approximately 8 kilometers west of the airport at an altitude of about 700 meters. ## Casualties and Damage All three crew members aboard the aircraft sustained injuries. The aircraft was destroyed in the accident. ## Official Findings The official investigation determined that, for unknown reasons, the crew initiated the approach to Jeju-Jungseok Airport from the west. Standard procedure required an approach from the north. At the time of the accident, visibility was poor due to low clouds, and Mt Hallasan was shrouded in clouds.