1970-05-15: Antonov AN-10 (CCCP-11149) — Aeroflot - Russian International Airlines — Chișinău, Moldova

11 fatalitiesChișinău, MoldovaLanding (descent or approach)

An aircraft conducting engine-out training maneuvers crashed during its final approach at Chișinău Airport, resulting in the deaths of all eleven people on board.

What happened

During a series of training exercises at Chișinău Airport, an aircraft carrying four instructors and seven student pilots was performing maneuvers involving simulated engine failures. The crew attempted to execute a new approach while operating with engines number 3 and 4 inoperative. During the final stage of this approach, the plane experienced a left bank and a loss of altitude, leading to a high-impact crash several kilometers before reaching the runway threshold. The impact resulted in a massive explosion that completely destroyed the aircraft. There were 11 fatalities among the crew members.

Findings

Investigations into the accident identified several critical errors regarding flight technique and decision-making during the missed approach. The primary cause was attributed to inadequate flying techniques and improper decisions made during a go-around under conditions where continuing the flight on two engines was unsafe.

Several contributing factors were documented:

  • The aircraft's speed and altitude during the maneuver were lower than the required minimums.
  • An instructor's decision to initiate a go-around occurred too late in the sequence.
  • Power application to the left engine was insufficient and inappropriate for the flight state.
  • The aircraft drifted 1,850 meters away from its intended approach path.
  • The 2,000-meter length of the Chișinău Airport runway was deemed inadequate for an approach with two engines out.
  • The crew did not notify Air Traffic Control that they were performing an approach with two engines inoperative.

Probable cause

Improper flight techniques and flawed decision-making during a missed approach under engine-out conditions.