Crash of a PZL-Mielec AN-2T in Kobyay

Date & Time: Apr 23, 2001 at 1745 LT
Type of aircraft:
Operator:
Registration:
RA-01122
Flight Phase:
Flight Type:
Survivors:
Yes
Schedule:
Pokrovsk – Magan – Kobyay – Sangar
MSN:
1G238-04
YOM:
1990
Country:
Region:
Crew on board:
2
Crew fatalities:
Pax on board:
11
Pax fatalities:
Other fatalities:
Total fatalities:
0
Aircraft flight hours:
2135
Aircraft flight cycles:
3112
Circumstances:
The aircraft departed Pokrovsk on an ambulance flight to Sangar with intermediate stops in Magan and Kobyay. On approach to Kobyay Airport, the aircraft was too high and its speed was excessive. Rather than initiating a go-around procedure, the captain continued the approach and landed 375 metres pas the runway threshold (the runway length is 600 metres). Unable to stop within the remaining distance, the aircraft overran, collided with various obstacles and came to rest 50 metres further. The crew did not report the incident to the company and decided to take off few minutes later. After liftoff, the aircraft was unable to gain sufficient speed and height. It struck trees and crashed in a snow covered terrain, bursting into flames. All 13 occupants were injured, among them five seriously. The aircraft was destroyed by fire.
Probable cause:
It was determined that the captain was intoxicated at the time of the accident and that he started the mission from Pokrovsk already drunk. He took the decision to take off from Kobyay Airstrip despite the propeller blades have been damaged during the previous overrun.

Crash of a PZL-Mielec AN-2T near Yakutsk: 1 killed

Date & Time: Jul 8, 1998
Type of aircraft:
Operator:
Registration:
RA-02823
Flight Phase:
Survivors:
Yes
Schedule:
Yakutsk – Kobyay – Sangar
MSN:
1G199-48
YOM:
1983
Country:
Region:
Crew on board:
3
Crew fatalities:
Pax on board:
7
Pax fatalities:
Other fatalities:
Total fatalities:
1
Circumstances:
The aircraft was engaged in a special flight from Yakutsk to Sangar with an intermediate stop in Kobyay, carrying doctors who came to provide care to local populations. Few minutes after takeoff from Yakutsk-Magan Airport, while cruising at an altitude of 1,150 metres at a speed of 180 km/h, the engine started to vibrate and lost power, Also, the oil pressure dropped and the speed decreased. The captain attempted an emergency landing in a swampy area when the aircraft rolled for about 32 metres and nosed over. A passenger was killed and all other occupants were injured, four seriously.
Probable cause:
Engine failure following the failure of the first cylinder and piston due to fatigue.

Crash of a PZL-Mielec AN-2TP near Kobyay

Date & Time: Jun 5, 1985 at 1215 LT
Type of aircraft:
Operator:
Registration:
CCCP-29348
Flight Phase:
Survivors:
Yes
Schedule:
Kobyay – Sangar
MSN:
1G77-31
YOM:
1966
Country:
Region:
Crew on board:
2
Crew fatalities:
Pax on board:
8
Pax fatalities:
Other fatalities:
Total fatalities:
0
Aircraft flight hours:
1394
Aircraft flight cycles:
20784
Circumstances:
The single engine airplane departed Kobyay at 1205LT on a regular schedule service to Sangar, carrying eight passengers and two pilots. While cruising at an altitude of 550 meters in good weather conditions, the engine lost power then failed. The crew attempted an emergency landing when the aircraft crashed in a prairie located about 35 km southwest of Sangar. All 10 occupants were uninjured while the aircraft was damaged beyond repair.
Probable cause:
Engine failure in flight following the failure of the cylinder n°7 due to manufacture problems.