Crash of an Antonov AN-12B in Yeniseysk: 1 killed

Date & Time: Oct 18, 1974 at 2352 LT
Type of aircraft:
Operator:
Registration:
CCCP-11030
Flight Type:
Survivors:
Yes
Schedule:
Sverdlovsk - Kamensk-Uralski - Krasnoyarsk
MSN:
7 3 450 02
YOM:
1967
Country:
Region:
Crew on board:
6
Crew fatalities:
Pax on board:
6
Pax fatalities:
Other fatalities:
Total fatalities:
1
Aircraft flight hours:
11124
Aircraft flight cycles:
4629
Circumstances:
The airplane was completing a flight from Sverdlovsk to Krasnoyarsk with an intermediate stop in Kamensk-Uralski, carrying six crew members and six passengers accompanying the cargo composed by 10 tons of various metallic materials. En route from Kamensk-Uralski to Krasnoyarsk, the crew was informed about poor weather conditions at destination and was instructed to divert to Yeniseysk Airport. On approach by night, the airplane descended below the glide and was too low when the copilot informed twice the captain they should initiate a go-around. For unknown reason, the captain continued the approach when the airplane, in a slight nose-down attitude, struck the ground with its nose gear 1,933 meters short of runway threshold. It bounced and flew for about 374 meters then struck trees and crashed 612 meters after initial impact. The aircraft was destroyed and the navigator was killed while 11 other occupants were injured.
Probable cause:
Poor approach planning on part of the crew who failed to follow the approach procedures and descended below the glide in poor visibility due to fog and night. The following contributing factors were reported:
- The fog reduced the visibility and considerably complicated the flight process,
- When approach lights were turn on in foggy conditions, this resulted in a screen that blinded the pilots,
- The captain's decision to continue the approach below the prescribed minimum altitude when he should have initiate a go-around procedure.

Crash of a PZL-Mielec AN-2TP near Yeniseysk: 2 killed

Date & Time: Nov 13, 1972 at 0955 LT
Type of aircraft:
Operator:
Registration:
CCCP-09676
Flight Phase:
Survivors:
Yes
Schedule:
Nazimovo – Yeniseysk
MSN:
1G76-10
YOM:
1966
Country:
Region:
Crew on board:
2
Crew fatalities:
Pax on board:
12
Pax fatalities:
Other fatalities:
Total fatalities:
2
Aircraft flight hours:
5883
Circumstances:
On a flight from Nazimovo to Yeniseysk, the engine lost power due to bad quality of the used B-91/115 fuel. While the aircraft was flying at a height of some 150 metres above the ground, the crew opted for a forced landing in a forest located 40 km northwest of Yeniseysk. The aircraft collided with trees, crashed, caught fire and burnt out. A passenger and a pilot were killed while all 12 other occupants were injured, three of them seriously.
Probable cause:
Engine failure caused by a poor quality fuel.

Crash of a Lisunov LI-2 in Krasnoyarsk: 4 killed

Date & Time: Nov 19, 1967 at 1656 LT
Type of aircraft:
Operator:
Registration:
CCCP-04227
Flight Type:
Survivors:
No
Schedule:
Yeniseysk - Krasnoyarsk
MSN:
184 299 09
YOM:
1948
Country:
Region:
Crew on board:
4
Crew fatalities:
Pax on board:
0
Pax fatalities:
Other fatalities:
Total fatalities:
4
Aircraft flight hours:
19305
Aircraft flight cycles:
8764
Circumstances:
The crew completed a cargo flight from Krasnoyarsk to Yeniseysk and was now returning to Krasnoyarsk on a ferry flight. The approach to Krasnoyarsk Airport was started 20 minutes after sunset. In limited visibility, the crew failed to realize he was flying at an insufficient altitude. Some 55 meters before the middle marker, the airplane struck tree tops then sank and struck successively a telegraphic pole, a wooden fence and a hangar before crashing in flames 85 meters after the middle marker. Three crew members were killed while the radio navigator was seriously injured. Three days later, the only survivor died from his injuries.
Probable cause:
The exact cause of the accident could not be determined with certainty. However, it was reported the crew apparently started the descent prematurely for unknown reason.

Crash of a Lisunov LI-2T near Yeniseysk: 3 killed

Date & Time: Dec 4, 1952 at 1752 LT
Type of aircraft:
Operator:
Registration:
CCCP-L4661
Flight Phase:
Survivors:
Yes
Schedule:
Dudinka – Yeniseysk – Krasnoyarsk
MSN:
46 01
YOM:
11
Flight number:
SU688
Country:
Region:
Crew on board:
5
Crew fatalities:
Pax on board:
14
Pax fatalities:
Other fatalities:
Total fatalities:
3
Aircraft flight hours:
2670
Circumstances:
The airplane left Yeniseysk Airport at 1655LT bound for Krasnoyarsk. Thirty minutes later, while cruising at an altitude of 1,800 meters by night and in good weather conditions, the crew encountered technical problems with the left propeller that was over speeding. For unknown reason, the crew was unable to feather the propeller and took the decision to return to Yeniseysk. Due to drag, the aircraft lost height and thirty minutes later, at a speed of 130 km/h, it hit tree tops and crashed in a wooded area located 25 km south of Yeniseysk Airport. Three passengers were killed while 16 other occupants were injured. The aircraft was destroyed.
Probable cause:
Failure of the pressure switch on the left-hand drive regulator in flight, which caused the propeller to overspeed. A contributory factor was the crew who failed to set the nominal mode of operation on the right engine immediately after the start of the descent, using full power on the right engine with delay, which caused the aircraft to lose altitude rapidly. Despite good visibility due to moonlight, the crew failed to attempt an emergency belly landing in a suitable terrain.