What happened
During a scheduled certification flight intended to evaluate performance in low-temperature environments, an Antonov An-158 departed from Omsk Airport bound for Yakutsk. The flight was being conducted as part of a manufacturer's testing program and was carrying a total of 33 people, consisting of 22 passengers and 11 crew members.
Shortly after takeoff, while the aircraft was at an altitude of approximately 20 meters, the number three engine experienced a loss of power. In response, the flight crew increased the power settings on the remaining three engines to maintain the climb. However, the stability of the flight was short-lived; within 25 seconds, at an altitude of roughly 60 meters, the number one engine also failed.
Facing a critical loss of propulsion, the pilot attempted an emergency descent into a snow-covered area located 660 meters beyond the end of the runway. The aircraft performed a belly landing, which caused significant structural damage to the engines and the fuselage, which nearly separated at the wing level.
Findings
All 33 individuals on board were successfully rescued from the wreckage. While there were no fatalities, the accident resulted in four injuries, two of which were classified as serious.