Li-2 crash near Yuzhno-Sakhalinsk
Aeroflot (Far Eastern Territorial Directorate of the Civil Air Fleet, Khabarovsk Aviation Group) Lisunov Li-2 · Error by the crew and airfield services
From Khabarovsk to Bolshaya Elan, Yuzhno-Sakhalinsk
Event
- Event typeAccident: someone killed or seriously injured, or the aircraft substantially damaged (NTSB definition). Incident: an occurrence that affected or could have affected safety, short of that. Glossary
- Accident
- Event fatalities
- 26 · all aircraft and ground
- Ground fatalities
- Unknown
- Occupants
- Unknown
- Survivors
- 1
- InjuriesFatal: death within 30 days. Serious: over 48 hours in hospital within a week, most broken bones, severe bleeding, nerve or organ damage, or serious burns. Minor: anything less. Glossary
- Unknown
- OperationWhat kind of flying it was, grouped by the rules it flew under: airline (US Part 121), air taxi and commuter (Part 135), general aviation (Part 91 and similar), military or government. Glossary
- Airline
Lisunov Li-2
- Flight
- 971
- Aircraft type
- Lisunov LI-2
- Category
- Airplane · from aircraft type
- RegistrationThe aircraft's tail number, such as N12345 or G-ABCD. Registrations are reissued, so the same one years apart can be a different aircraft. Glossary
- CCCP-L4679
- Operator
- Aeroflot (Far Eastern Territorial Directorate of the Civil Air Fleet, Khabarovsk Aviation Group)
- Onboard fatalities
- 26
- Route
- From KhabarovskTo Bolshaya Elan, Yuzhno-Sakhalinsk
Cause areas
- Environmental issues › Operating environment
- Organizational issues › Management
From the investigation findings the Wikipedia article reports, sorted into the NTSB's cause areas with AI assistance.
Not plotted · Not plotted: the Wikipedia article gives no coordinates, and its site names no town or airport that matches exactly.
From the Wikipedia article
The Li-2 crash near Yuzhno-Sakhalinsk was an aviation accident involving a Li-2 aircraft of Aeroflot that occurred on Thursday, 26 August 1954, 13 and a half kilometres from Yuzhno-Sakhalinsk, and as a result of which 26 people died.
Crash
The aircraft was operating passenger flight 971 from Khabarovsk to Yuzhno-Sakhalinsk. At 00:15, with 22 passengers (14 adults and 8 children) and 5 crew members on board, it took off from Khabarovsk and, after climbing, took up the assigned flight level of 3000 metres. At Yuzhno-Sakhalinsk's Bolshaya Elan airport there was overcast stratocumulus cloud at a height of 400 metres, and to the south down to 300 metres, a south-easterly wind was blowing at 4 m/s, and visibility reached 10 kilometres, but the peaks of the eastern hills were obscured. When flight 971 entered the airspace of Yuzhno-Sakhalinsk airport, the crew received permission to descend to the height of the cloud tops, which was 1800 metres. Having tuned the radio compass to the airport's homing beacon, at 02:28 the crew began descending on a magnetic heading of 140°, which they reported to the controller. The aircraft was being flown by the co-pilot Parkhomenko, who was sitting in the left seat, while the aircraft commander (PIC) Degtyarenko sat in the right seat as instructor pilot.
At 02:37 passage of the homing beacon was reported, in response to which the controller gave permission to descend through the cloud according to the established procedure. The Li-2 began descending on a heading of 192°, and soon the aircraft reported reaching a height of 800 metres. At 02:42 the aircraft commander reported to the ground that a procedure turn had been completed and the descent continued towards the outer locator (DPRS), following a magnetic heading of 10°. At 02:45 the aircraft transmitted: "height 450, descending to the outer". This was the last radio message from aircraft L4679. At 02:50 Moscow time (09:50 local time) the Li-2, flying on a heading of 10°, struck trees on the slope of a hill 460 metres high. After sweeping through the trees over a distance of 128 metres, the airliner then struck the ground at the top of the hill, being completely destroyed up to frame 25 (half its length), and came to rest in an inverted position. The crash occurred in the area of Mount Komissarskaya, 13 and a half kilometres south-east of Yuzhno-Sakhalinsk and 9 kilometres from the outer locator of the Korsakov military airfield, which belonged to the Pacific Fleet aviation, that is, east of the approach pattern of Bolshaya Elan airport. The crash site was found the next day, and only one surviving passenger was found — a lieutenant colonel of the Soviet Army born in 1914, who was taken to hospital in serious condition. All the other 26 people (5 crew members, 13 adult passengers and 8 children) died.
Investigation and cause
Investigation
Examination of the wreckage showed that at the moment of collision with the trees the engines were running and the landing gear was extended. The ARK-5 radio compass was switched on and tuned to a frequency of 683 kHz, which is close to the operating frequency of the outer locator of Bolshaya Elan airfield — 670.2 kHz. At the same time, the operating frequency of the outer locator of Korsakov airfield was supposed to be 687 kHz, but a check measurement established that it was 684 kHz, that is, even closer to the operating frequency of the civil airfield's outer locator. The outer locators of the two airfields are only 13.5 kilometres apart, and combined with the small difference in frequencies this meant that in some cases their frequencies converged, with the call signs overlapping one another. That is, a small error in tuning the ARK-5 radio compass was enough for it to guide the aircraft to the other radio station. At Bolshaya Elan and Korsakov airfields there was no constant monitoring of compliance with the nominal frequencies of the homing beacons, although crews had repeatedly complained about errors in the operation of the outer locator at Bolshaya Elan airfield. At Korsakov airfield a check had been carried out only once in the previous two to three months. Also, the air traffic control service of Yuzhno-Sakhalinsk airport did not exercise proper direction of aircraft flights during cloud descents and approaches, and did not properly monitor the movement of airliners in the airport's airspace. Also, Bolshaya Elan airport lacked radio-technical equipment that would have allowed controllers on the ground to monitor the position of aircraft in the airfield's airspace in difficult weather conditions. In addition, airliner crews were not informed that the homing beacons of the civil and military airfields were operating simultaneously, and the flight director, moreover, did not require the crew to switch on the RV-2. Even before the crash of flight 971, in May of the same year there had already been two cases where civil aircraft had mistakenly homed onto the outer locator of Korsakov airfield, but the command of the Far Eastern Territorial Directorate of the Civil Air Fleet and of the Khabarovsk Aviation Group in particular took no measures to prevent such situations.
Causes
According to the commission's findings, the crash occurred due to a collision with ground that was located …
Translated into English with AI assistance from the Russian Wikipedia article “Катастрофа Ли-2 под Южно-Сахалинском” (revision 150406299, retrieved 2026-09-19) by its authors, under CC BY-SA 4.0. Extracted as plain text: references, tables, images and some sections are left out; the translation may contain errors, and long articles were cut to their first 700 words. Read the article
Sources
Russian Wikipedia article: Катастрофа Ли-2 под Южно-Сахалинском
- Translation
- Into English with AI assistance; names of linked operators and aircraft types from Wikidata. It may contain errors.
- Revision
- 150406299 · 2025-12-02 · retrieved 2026-09-19
- Wikidata
- Q18280470
- Licence
- Text CC BY-SA 4.0, by the article's authors; Wikidata CC0; town positions GeoNames (CC BY 4.0)
Where each value comes from
- Record
- ru Wikipedia article "Катастрофа Ли-2 под Южно-Сахалинском" (page 5243682, revision 150406299), translated into English with AI assistance
- Date
- Wikipedia infobox: date
- Place and country
- Wikipedia infobox: site
- Map position
- none
- Aircraft, operator and route
- Wikipedia infobox: aircraft type, registration, operator, origin and destination; route airports from the linked airport articles' Wikidata codes (OurAirports)
- Operation
- airline flight number in the infobox
- Fatalities
- Wikipedia infobox: aircraft fatalities
- Ground fatalities
- not stated in the Wikipedia infobox
- Summary
- Wikipedia infobox: summary
Source notes (1)
- Wikipedia · Facts from the Russian Wikipedia article's infobox, translated into English with AI assistance, not checked against an investigation report. Independent review pending.