Crash of a Fairchild C-123J Provider on Mt Hallasan: 53 killed

Date & Time: Feb 6, 1982 at 1500 LT
Type of aircraft:
Operator:
Flight Type:
Survivors:
No
Site:
Schedule:
Seoul - Jeju
Country:
Region:
Crew on board:
6
Crew fatalities:
Pax on board:
47
Pax fatalities:
Other fatalities:
Total fatalities:
53
Circumstances:
While descending to Jeju Airport on a flight from Seoul, the crew encountered poor weather conditions. In limited visibility, the airplane struck the north face of Mt Hallasan, about 13 km south of the airport. The wreckage was found in a wooded canyon and all 53 occupants were killed.

Crash of a Fokker F27 Friendship 500 near Sokcho: 2 killed

Date & Time: Jan 23, 1971
Type of aircraft:
Operator:
Registration:
HL5212
Flight Phase:
Survivors:
Yes
Schedule:
Gangneung - Seoul
MSN:
10428
YOM:
1969
Country:
Region:
Crew on board:
5
Crew fatalities:
Pax on board:
55
Pax fatalities:
Other fatalities:
Total fatalities:
2
Aircraft flight hours:
2302
Aircraft flight cycles:
3171
Circumstances:
Shortly after takeoff from Gangneung to Seoul, a man came into the cockpit and hijacked the airplane, asking the crew to divert to North Korea. Approaching the border, the crew reduced his altitude in an attempt to land on a beach when the hijacker unpin a grenade that exploded in the cockpit. The hijacker and the copilot were killed. Injured, the captain elected to land on a beach when the aircraft crash landed and came to rest. 16 occupants were injured and 42 others were inhurt. The aircraft was damaged beyond repair.
Probable cause:
Hijacked and crashed.

Crash of a NAMC YS-11-125 in Wonsan

Date & Time: Dec 11, 1969
Type of aircraft:
Operator:
Registration:
HL5208
Survivors:
Yes
Schedule:
Kangnung - Seoul
MSN:
2043
YOM:
1967
Country:
Region:
Crew on board:
4
Crew fatalities:
Pax on board:
48
Pax fatalities:
Other fatalities:
Total fatalities:
0
Circumstances:
Ten minutes after takeoff from Kangnung Airport, a passenger came into the cockpit and forced the pilots to divert to North Korea. After crossing the border between both Koreas, the airplane was escorted by three fighters and the crew was forced to land at Sondok Airport near Wonsan. Apparently, the landing was 'missed' and the airplane was severely damaged upon arrival. Nevertheless, none of the 52 occupants were injured but arrested and interned by the North Korean Authorities. Following negotiations with South Korea, 39 passengers were released and sent back to South Korea on 14 February 1970. But all four crew members and nine passengers plus the hijacker were not released. In 2018, the South Korean Government and the families still do not have any information about the fate of these 12 people listed here below:
Yu Byeong-ha (유병하, 38), pilot,
Choe Seok-man (최석만, 37), copilot,
Jeong Gyeong-suk (정경숙, 24), stewardess,
Seong Gyeong-hui (성경희, 23), stewardess,
Yi Dong-gi (이동기, 49), Director of a printing house,
Hwang Won (황원, 32), Director of the Munhwa audiovisual company,
Gim Bongju (김봉주, 27), cameraman for Munhwa audiovisual company,
Chae Heon-deok (채헌덕, 37), doctor,
Im Cheol-su (임철수, 49), office employee,
Jang Ki-yeong (장기영, 40), businessman in the food industry,
Choe Jeong-ung (최정웅, 28), employee for Hankook Slate.

Crash of a Douglas C-124A-DL Globemaster II in Tachikawa AFB: 129 killed

Date & Time: Jun 18, 1953 at 1634 LT
Operator:
Registration:
51-0137
Flight Type:
Survivors:
No
Schedule:
Tachikawa – Seoul
MSN:
43471
YOM:
1951
Country:
Region:
Crew on board:
7
Crew fatalities:
Pax on board:
122
Pax fatalities:
Other fatalities:
Total fatalities:
129
Captain / Total flying hours:
6302
Circumstances:
The airplane was on its way back to Seoul, carrying 122 soldiers on leave and a crew of seven. Shortly after takeoff, while climbing to a height of 1,000 feet, the pilot contacted ground and informed ATC about the failure of the engine number three. The crew received the permission to return for an emergency landing and the pilot-in-command completed a circuit to return. On final, he requested more power and fully extended the flaps when the aircraft stalled and crashed in a huge explosion in a field located 5,6 km short of runway. The aircraft was totally destroyed by impact forces and a post crash fire consumed the wreckage for several hours. None of the 129 occupants survived. To date, this was the deadliest plane crash in History.
Probable cause:
Failure of the engine number three shortly after takeoff for unknown reason. On final, the aircraft stalled due to the combination of a low approach speed, fully extended flaps (wrong approach configuration).

Crash of a Douglas C-47A-80-DL off Incheon: 8 killed

Date & Time: Apr 29, 1952
Operator:
Registration:
43-15379
Flight Phase:
Flight Type:
Survivors:
No
Schedule:
Seoul - Ch'o-do Island
MSN:
19845
YOM:
1944
Country:
Region:
Crew on board:
8
Crew fatalities:
Pax on board:
0
Pax fatalities:
Other fatalities:
Total fatalities:
8
Circumstances:
Crashed in unknown circumstances off Incheon, South Korea, killing all eight crew members. They were taking part to the evacuation of US wounded soldiers.
Crew:
1st Lt Francis P. Burns,
1st Lt Donn H. Haugen,
Cpt Richard E. Hines,
Cpt Frederick S. Kelley,
S/Sgt Albert C. May,
A1C Calvin G. Sandrock Jr.,
1st Lt Frank F. Sherman,
1st Lt Benjamin H. Woodruff Jr.