The U.S. aircraft register, updated daily
Accidents · NTSB ANC11WA015 · Preliminary: the investigation is not finished

Cessna 172 and Cessna 172 mid-air collision near Uljin Airport, Kr, January 21, 2011

On January 21, 2011, 2 aircraft, Cessna 172 (HL1080) and Cessna 172 (HL1127), were involved in a mid-air collision near Uljin Airport. 2 people were killed.

The NTSB's probable cause their words, unchanged

The NTSB has not yet published a probable cause for this accident. Investigations usually take one to two years; this page updates when the final report is released.

Source: NTSB aviation accident database, copy made October 5, 2026. Docket and reports at the NTSB.

What the record shows

Date
January 21, 2011
Place
Uljin Airport, South Korea
Type
Accident · mid-air collision
Injuries
2 people were killed.
Weather
not recorded
Aircraft 1
Cessna 172 R · all 172s on the register
Registration
HL1080 · no longer on the register
Damage
Substantial damage
Flight
Instructional flight · non-U.S. private rules
Aircraft 2
Cessna 172 S · all 172s on the register
Registration
HL1127 · no longer on the register
Damage
Substantial damage
Flight
Instructional flight · non-U.S. private rules

The NTSB's narrative for the Cessna 172 preliminary · quoted from the NTSB record

On January 21, 2011, about 0049 universal coordinated time, two Cessna 172 airplanes, Korean registered HL1080 and HL1127, operated by the Korea Aerospace University and Hanseo University respectively, sustained substantial damage following a midair collision and subsequent impact with terrain. The two solo student pilots operating the airplanes were fatally injured. Visual meteorological conditions prevailed at the time of the accident. This accident investigation is under the jurisdiction of the Aviation and Railway Accident Investigation Board, Republic of Korea. Any further information pertaining to this accident may be obtained from: Aviation and Railway Accident Investigation Board Ministry of Land, Transport and Maritime Affairs 281, Gonghang-Dong Gangseo-gu, Seoul, 157-815 Republic of Korea Tel.: (82) 2 6096-1030 (82) 2 6096-1000 (24 hours) E-mail: araib@korea.kr Fax: (82) 2 6096-1031 AFTN: RKSLYLYX Website: http://www.araib.go.kr

The complete narrative as the NTSB published it. The NTSB's docket holds the report as a PDF and any photographs, statements and other documents from the investigation.

The NTSB's narrative for the Cessna 172 preliminary · quoted from the NTSB record

On January 21, 2011, about 0049 universal coordinated time, two Cessna 172 airplanes, Korean registered HL1080 and HL1127, operated by the Korea Aerospace University and Hanseo University respectively, sustained substantial damage following a midair collision and subsequent impact with terrain. The two solo student pilots operating the airplanes were fatally injured. Visual meteorological conditions prevailed at the time of the accident. This accident investigation is under the jurisdiction of the Aviation and Railway Accident Investigation Board, Republic of Korea. Any further information pertaining to this accident may be obtained from: Aviation and Railway Accident Investigation Board Ministry of Land, Transport and Maritime Affairs 281, Gonghang-Dong Gangseo-gu, Seoul, 157-815 Republic of Korea Tel.: (82) 2 6096-1030 (82) 2 6096-1000 (24 hours) E-mail: araib@korea.kr Fax: (82) 2 6096-1031 AFTN: RKSLYLYX Website: http://www.araib.go.kr

The complete narrative as the NTSB published it. The NTSB's docket holds the report as a PDF and any photographs, statements and other documents from the investigation.

The factual record for the Cessna 172 from the NTSB's investigation tables, in plain English

The aircraft

  • Landing gear: fixed

Weather at the time

  • Temperature: 0°F (-18°C), dew point 0°F (-18°C)

Injuries

FatalSeriousMinorNone
Flight crew1

The factual record for the Cessna 172 from the NTSB's investigation tables, in plain English

The aircraft

  • Landing gear: fixed

Injuries

FatalSeriousMinorNone
Flight crew1

Documents from the investigation the NTSB's docket: the evidence folder behind the report

The docket, the folder of records gathered during an investigation (maintenance records, photographs, witness statements, examinations), has not been read from the NTSB for this case yet; the list appears here once it has. Open the docket at the NTSB.

Everything on this page comes from the NTSB's public records. The narrative, probable cause and findings are the NTSB's own words; the coded tables behind the report are written out in plain English, with pilots' ages, home towns and medical details left out. The documents and photographs are the NTSB's docket, shown as the NTSB released them. This site's own text never names anyone involved. A preliminary report can change; the final report usually follows one to two years later, and the page is refreshed when it does.