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An-10 crash near Syktyvkar

8 Feb 1963 · near the village of Verkhnyaya Maksakovka, 10 km from Syktyvkar (Komi ASSR, RSFSR, USSR)

Aeroflot (Syktyvkar Separate Aviation Group of the Civil Air Fleet, 75th aviation detachment) Antonov An-10 · Design flaws, inadequate crew training

From Syktyvkar to Syktyvkar

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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
7 · all aircraft and ground
Ground fatalities
Unknown
Occupants
Unknown
Survivors
Unknown
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

Antonov An-10

Aircraft type
Antonov AN-10
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-11193
Onboard fatalities
7
Route
From SyktyvkarTo Syktyvkar

Cause areas

  • Aircraft › Aircraft power plant
  • Aircraft › Aircraft systems
  • Aircraft › Fluids/misc hardware
  • Organizational issues › Development
  • Personnel issues › Experience/knowledge

From the investigation findings the Wikipedia article reports, sorted into the NTSB's cause areas with AI assistance.

Approximate · Estimated position: Verkhnyaya Maksakovka, near the place the Wikipedia article names. Not the accident site.

From the Wikipedia article

The An-10 crash near Syktyvkar was an air crash that occurred on Friday 8 February 1963 in the Syktyvkar area, involving an An-10A aircraft of the Aeroflot airline, which killed 7 people.

Crash

The aircraft was performing a training flight, during which an inspection check of the piloting technique of the flight personnel of the Syktyvkar aviation detachment was being carried out. At 14:47 the An-10 took off on a magnetic heading of 187°. The sky at that time was covered by solid stratus cloud with a base at 200—300 metres and tops at 1500—2000 metres; light snow was falling, a moderate south-westerly wind was blowing, the air temperature was about -4 °C, and visibility about 4—6 kilometres. also, according to reports from other aircraft, moderate icing was observed in the clouds. The crew of 9 people was flying circuits using the OSP and SP-50 systems in the following sequence: two approaches without landing and one with a landing, that is, three approaches per person being checked. After 6 approaches had been completed, the two persons being checked who had completed their programme were dropped off.

There were now 7 people on board: the PICs S. F. Babikov and B. S. Nikolaev, the senior pilot-instructor of the Main Directorate of the Civil Air Fleet P. P. Solovyov, co-pilot I. K. Shugin, navigator Yu. I. Sadovsky, flight engineer I. S. Bordachev and flight radio operator E. I. Serzhant. The 11th flight was being performed with a go-around, and the aircraft at this moment was being flown by PIC Babikov, sitting in the left seat, while inspector Solovyov sat in the right seat. On passing the inner locator (BPRS) the crew reported a go-around, to which the control tower (KDP) controller instructed them to make a right turn with a climb to 600 metres. The crew confirmed reaching 600 metres and reported the start of the first turn, and after that the start of the second turn. Then unexpectedly at 17:37 the aircraft reported: "We're falling, we're falling, we're falling… the engines have failed". After that communication ceased.

The An-10 was finishing the second turn, or had just finished it, when three engines failed: Nos. 1, 2 and 3. The crew increased the power of the remaining engine No. 4, but the thrust asymmetry led to the airliner going into a left bank. Descending on a heading of 15—20° and along a trajectory inclined at 45—50°, the An-10, at an angle of 15—20° and with a left bank of 80—90°, at low speed crashed into a forest 10.2 kilometres from the aerodrome reference point (KTA) of Syktyvkar airport on an azimuth of 113° (to the east) and to the east of the village of Verkhnyaya Maksakovka, after which it was completely destroyed and caught fire. All 7 people on board were killed.

Investigation and cause

Investigation

As the technical commission was able to establish, at the moment of the crash only the fourth engine was working, which was at take-off power, whereas the other three were windmilling and not working. Most likely the engines failed as a result of ice that had formed on the air intakes, which then broke away and entered the engine compressors. The cause of the ice formation may have been the imperfection of the An-10's anti-icing system.

The cause of the crash is the failure of the engines with the occurrence of significant negative thrust, which caused an emergency in the difficult conditions of flight in cloud at night at a height of 600 metres.

Probable causes of the engine failures:

Cut-off of fuel by the KTA-5F hydraulic shut-off valves owing to increased pressure in the drain line from the EUG-93 valve block as a result of a blockage of the pipeline.

Ice entering the engine compressors owing to:

Insufficient effectiveness of the air intake heating

Untimely actuation of the icing warning and switching on of the air intake heating by the crew. At the same time, according to the testimony of two pilots who left the aircraft after the sixth flight, the air intake heating had been switched on throughout the flight and had not been switched off.

Contributing causes:

Absence on the aircraft of non-tumbling artificial horizons

Absence on the aircraft of feathering buttons of the KFL-37 type and the inconvenient location of the engine failure warning lamps

Lack of training of the flight personnel in windmilling flights during the last two years owing to restrictions introduced by the design bureau limiting windmilling time to 1 minute.

Translated into English with AI assistance from the Russian Wikipedia article “Катастрофа Ан-10 под Сыктывкаром” (revision 150406357, 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 Ан-10 под Сыктывкаром
Article
Катастрофа Ан-10 под Сыктывкаром
Translation
Into English with AI assistance; names of linked operators and aircraft types from Wikidata. It may contain errors.
Revision
150406357 · 2025-12-02 · retrieved 2026-09-19
Wikidata
Q16662331
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 Ан-10 под Сыктывкаром" (page 4591009, revision 150406357), translated into English with AI assistance
Date
Wikipedia infobox: date
Place and country
Wikipedia infobox: site
Map position
place the Wikipedia infobox site links (Wikidata coordinates)
Aircraft, operator and route
Wikipedia infobox: aircraft type, registration, operator, origin and destination; route airports from the linked airport articles' Wikidata codes (OurAirports)
Operation
Reviewed correction (2026-09-26): An Aeroflot An-10 on a training and check flight for the Syktyvkar detachment's crews: the state airline's own training flight. The article: "The aircraft was performing a training flight, during which an inspection check of the piloting technique of the flight personnel of the Syktyvkar aviation detachment was being carried out."
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.