On February 5, 1982, a Republic of Korea Air Force Fairchild C-123J crashed while on approach to Jeju International Airport, Jeju, South Korea.
All 47 passengers and 6 crew were killed in the impact.
It remains the fourth-worst accident in South Korean aviation history.
[1] The aircraft was engaged in a training mission and encountered bad weather before crashing near to Mount Halla, a dormant volcano.
[2][3] The 47 soldiers belonged to the army's elite 707th Special Mission Battalion, making the accident the single costliest day in the unit's history.