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Li-2 crash near Yuzhno-Sakhalinsk

26 Aug 1954 · near Korsakov airfield and Mount Komissarskaya, 13.5 km SE of Yuzhno-Sakhalinsk, Sakhalin Oblast (RSFSR, USSR)

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

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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
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
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.