Aeroflot Flight 2306

The Tupolev Tu-134 operated by Aeroflot crashed on 2 July 1986 during an emergency landing after it departed Syktyvkar, killing 54 of 92 passengers and crew on board.

While the Tu-134 was climbing away from the airport, approximately 10 minutes after takeoff at 10:05 while at an altitude of 5,600 metres (18,400 ft), the aircraft's rear cargo hold smoke alarm annunciated.

The flight engineer confirmed that there was indeed a fire in the rear cargo hold where passenger baggage was stored, giving off excessive smoke.

When he returned to the cockpit at 10:10:46, the plane had already climbed to an altitude of 6,700 metres (22,000 ft) and was 140 kilometres (87 mi; 76 nmi) from Syktyvkar, which, taking into account the delay of about 4–5 minutes from the moment of the fire signal, significantly limited available options for dealing with the emergency.

The captain then delegated the co-pilot and flight engineer to put out the fire while he and the navigator remained in the cockpit to initiate an emergency descent.

The flight engineer and the first officer fought the fire while the captain and navigator initiated an immediate descent and turn in the direction go Syktyvkar in preparation for an emergency landing.

The two officers had attempted to reach the rear cargo compartment but because the smoke and fumes were so intense they quickly became disoriented and did not discharge the fire extinguishers in the correct location.

At 10:27:10, 75 kilometres (47 mi; 40 nmi) to the south-west of Syktyvkar, flying on a bearing of 60°, at an altitude of 23–25 metres (75–82 ft) above the ground, the Tu-134 struck with treetops and crashed into the forest.

However, due to low visibility, the distance from the airport, and the increasing amount of fumes in the cockpit, the aircraft was forced to make a landing in the forest below.

The exact cause of the fire was not discovered, but it was suggested that an incendiary device or contraband flammable materials could have been in passenger baggage because the luggage was not inspected before the flight.