Crash of a PZL-Mielec AN-2R in Srednekolympsk

Date & Time: Oct 14, 1988 at 1336 LT
Type of aircraft:
Operator:
Registration:
CCCP-32612
Survivors:
Yes
Schedule:
Srednekolympsk – Orlovo
MSN:
1G219-11
YOM:
1986
Country:
Region:
Crew on board:
2
Crew fatalities:
Pax on board:
12
Pax fatalities:
Other fatalities:
Total fatalities:
0
Circumstances:
The single engine airplane departed Srednekolympsk Airport at 1147LT on a schedule service to Orlovo, carrying 12 passengers and two pilots. Weather conditions were excellent with a visibility of 50 km. About 19 minutes into the flight, weather conditions deteriorated with fog and a visibility below 1,000 meters. Instead of returning to Srednekolympsk, the crew decided to continue and reduced his altitude in an attempt to establish a visual contact with the ground, without success. During 46 minutes, the crew circled in the area of Orlovo to locate the landing field without success and eventually decided to return to Srednekolympsk. On approach of Srednekolympsk Airport, the engine failed. The crew attempted an emergency landing when the aircraft crashed 4 km short of runway. All 14 occupants escaped uninjured while the aircraft was damaged beyond repair.
Probable cause:
It was determined that the engine failed due to fuel exhaustion. The crew failed to return to the departure airport when weather conditions worsened with a visibility below minimums and the fuel quantity was insufficient for all flight.

Crash of an Antonov AN-2T in Srednekolymsk

Date & Time: Oct 18, 1977 at 1156 LT
Type of aircraft:
Operator:
Registration:
CCCP-55625
Flight Phase:
Survivors:
Yes
Schedule:
Srednekolymsk – Nalimsk
MSN:
1123 473 05
YOM:
1959
Country:
Region:
Crew on board:
2
Crew fatalities:
Pax on board:
3
Pax fatalities:
Other fatalities:
Total fatalities:
0
Circumstances:
After takeoff from Srednekolymsk Airport, while climbing to a height of 150 meters, the engine started to misfire. Power dropped and fire sprayed out from the right side of the engine. The crew elected to make an emergency landing but inadvertently switched off the battery so he was unable to lower the flaps. The airplane crash landed at high speed, lost its undercarriage and lower wings and came to a halt, broken in two. All five occupants were quickly rescued while the aircraft was destroyed.
Probable cause:
The accident was the consequence of the engine misfiring as a result of a failure of the rear spark plug on cylinder n°2, which occurred as a result of the central electrode falling out of the candle with subsequent burning of its body in the cylindrical part near the turnkey hexagon. The falling out of the central electrode of the rear spark plug of cylinder n°2 was caused by the destruction of the insulator due to the formation of a microcrack and internal stresses in the insulator in the process of making candles. According to the conclusions of the State Research Institute of Civil Aviation, this defect was the consequence of a faulty design and manufacture.

Crash of a Lisunov LI-2 in Srednekolymsk: 23 killed

Date & Time: Nov 22, 1948
Type of aircraft:
Operator:
Registration:
CCCP-L4463
Survivors:
Yes
Schedule:
Zyrianka – Srednekolymsk
Country:
Region:
Crew on board:
5
Crew fatalities:
Pax on board:
21
Pax fatalities:
Other fatalities:
Total fatalities:
23
Circumstances:
While approaching Srednekolymsk, weather conditions worsened and the radio contact with ATC was lost. The approach was abandoned and the pilot was forced to make a go around as he was unable to locate the airport. A second and a third attempt to land were abandoned as well. While completing a last turn during a fourth approach, the pilot lost control of the aircraft that stalled and crashed in the Kolyma River, about 400 meters short of the runway threshold. Three passengers were seriously injured while 23 other occupants were killed. It appears that the aircraft' speed was too low during the last turn.