Investigation Summary
The aircraft was supporting the 31st Soviet Antarctic Expedition, flying a 2,020 km route between two ice stations. While BAAA classifies the flight type as cargo, the aircraft was primarily performing a ferry and positioning mission. To facilitate the long-distance flight, the Il-14M was equipped with skis and additional fuel tanks within the cabin. During the second half of the flight, the crew encountered severe icing that had not been predicted in the pre-flight weather briefing. To escape the icing, they descended to 1,500 meters, but this put the aircraft directly into a high-velocity jet stream. Headwinds reached 140 km/h, drastically slowing progress toward Mirny Station. As fuel reserves dwindled to just 30 minutes, the crew was forced to attempt a landing in an area characterized by whiteout conditions. The lack of visual contrast and horizon definition made it impossible for the pilots to judge their vertical distance from the glacier surface, leading to a high-impact collision.
Final Conclusions
The accident was caused by a combination of severe unforecast weather and fuel exhaustion. The primary factors included hurricane-force headwinds that depleted fuel reserves and whiteout conditions that prevented a successful emergency landing on the glacier surface.
Video Analysis
No video analysis linked for this case file yet.
Airframe & Maintenance
Systems & Failure Modes
Additional Fuel Tanks
Extra fuel tanks were installed in the cabin to extend the range for the 2,020 km ferry flight.
Ski Landing Gear
The aircraft was equipped with skis to allow for takeoffs and landings on ice and snow surfaces.
Interesting Facts
- 01The aircraft was 240 km west of Mirny Ice Station at the time of the crash.
- 02The crash occurred at coordinates S66.833 E88.00.
- 03The flight was part of the 31st Soviet Antarctic Expedition.
- 04The Il-14M was fitted with skis for Antarctic operations.
- 05Visibility at the time of the attempted emergency landing was reported as nearly zero.
- 06The wreckage was located by search teams several days after the disappearance.
Safety Actions & Advisories
Antarctic Weather Forecasting Improvements
Following the accident, the Soviet Antarctic Expedition emphasized the need for more frequent weather observations along the coastal routes between stations to better detect localized jet streams and icing conditions.
Location
APPROXIMATE POSITION · Position recorded by the entered by an editor without a stated precision, so the ring shows roughly where the event occurred rather than an exact point. The ring shows the accuracy the record supports, not the point of impact.