Crash of an Antonov AN-12AP in Panevėžys: 6 killed

Date & Time: May 26, 1972
Type of aircraft:
Operator:
Flight Phase:
Flight Type:
Survivors:
Yes
MSN:
2 4 010 03
YOM:
1962
Country:
Region:
Crew on board:
7
Crew fatalities:
Pax on board:
0
Pax fatalities:
Other fatalities:
Total fatalities:
6
Circumstances:
The crew was engaged in a training mission with other similar aircraft. While cruising by night in marginal weather conditions, the crew lost visual contact with the leader. While trying to regain contact, the airplane lost height then struck the ground and crashed in a field. The flight engineer was injured while six other crew members were killed.

Crash of an Antonov AN-12 near Melitopol: 7 killed

Date & Time: Dec 6, 1971
Type of aircraft:
Operator:
Flight Phase:
Flight Type:
Survivors:
No
Country:
Region:
Crew on board:
7
Crew fatalities:
Pax on board:
0
Pax fatalities:
Other fatalities:
Total fatalities:
7
Circumstances:
During a formation flight in restricted visibility the pilot, thinking that he passed the leading aircraft, decreased the flying speed to 300 km/h. Simultaneously his plane entered a wake vortex from the leading An-12. The aircraft went out of control and crashed, killing all seven crew members.

Crash of an Antonov AN-12A in Ahmadnagar: 11 killed

Date & Time: Aug 16, 1971 at 2030 LT
Type of aircraft:
Operator:
Registration:
BL918
Flight Phase:
Flight Type:
Survivors:
No
Schedule:
Pune - Pune
MSN:
4 016 03
YOM:
1964
Country:
Region:
Crew on board:
3
Crew fatalities:
Pax on board:
8
Pax fatalities:
Other fatalities:
Total fatalities:
11
Circumstances:
The four engine aircraft departed Pune Airport on a training exercise in the region of Ahmadnagar. While practicing bombing at low height, control was lost and the airplane crashed onto a hill. All 11 occupants were killed.

Crash of an Antonov AN-12B in Calcutta

Date & Time: Jul 29, 1971 at 1458 LT
Type of aircraft:
Operator:
Registration:
CCCP-12993
Flight Type:
Survivors:
Yes
Schedule:
Raipur – Calcutta
MSN:
00 347 307
YOM:
1970
Country:
Region:
Crew on board:
7
Crew fatalities:
Pax on board:
0
Pax fatalities:
Other fatalities:
Total fatalities:
0
Circumstances:
The crew was returning to Calcutta-Dum Dum on a ferry flight from Raipur. En route, he was informed that weather conditions worsened in Calcutta with a visibility limited to 2 km. While descending to an altitude of 1,830 meters, the wind component changed and the crew was vectored for an approach to runway 01R which was not equipped with an ILS system. On final approach, while at a distance of 4 km from the airfield, the airplane went through a low pressure area with heavy rain falls. At a distance of 900 meters from the runway threshold, at an altitude of 40/50 meters, the visibility dropped to zero due to torrential rains. ATC informed the crew about the minimums and the navigator advised the captain to initiate a go-around manoeuvre. But the captain continued the descent and passed below the glide until the aircraft struck the ground 198 meters short of runway threshold and 20 meters to the left of the centerline. It slid for several yards and came to rest in a swampy area. All seven crew members were rescued while the aircraft was damaged beyond repair.
Probable cause:
The airplane entered an area of heavy rains falls, reducing the visibility to zero. In a very short time, the crew lost visual contact with the runway and all visual references with the ground as well, causing the aircraft to pass below the glide and to struck the ground. For unknown reason, the captain failed to initiate a go-around manoeuvre and ignored the different warnings from ATC and his crew. The fact that the crew was not aware about the non precision approach procedures for runway 01R remained a contributing factor.

Crash of an Antonov AN-12B in Batagay

Date & Time: May 25, 1971 at 1301 LT
Type of aircraft:
Operator:
Registration:
CCCP-11024
Flight Type:
Survivors:
Yes
Schedule:
Yakutsk - Batagay
MSN:
7 3 448 09
YOM:
1967
Country:
Region:
Crew on board:
6
Crew fatalities:
Pax on board:
2
Pax fatalities:
Other fatalities:
Total fatalities:
0
Aircraft flight hours:
5532
Aircraft flight cycles:
1225
Circumstances:
The airplane was completing a cargo flight from Yakutsk to Batagay, carrying a crew of six, two passengers and a load of pipes for a total weight of 11,350 kilos. Following an uneventful flight and approach, the crew completed the landing in good conditions. According to the crew and eyewitnesses, the touchdown was smooth about 74 meters past the runway threshold at a speed of 250 km/h. After a course of 105 meters, a loud sound was heard on the right side of the aircraft. While decelerating, the aircraft deviated to the right when, at a speed of 210 km/h, the engine n°4 struck the ground. The airplane veered off runway to the right, struck an earth mound then trees, pivoted on itself before coming to rest in flames 710 meters after the initial impact and 30 meters to the right of the runway. All eight occupants evacuated safely while the aircraft was damaged beyond repair.
Probable cause:
The right main landing gear leg broke shortly after touchdown, probably due to fatigue fracture. Investigations were unable to accurately define the landing parameters because the aircraft was not equipped with the latest generation of FDR systems. The failure of the right main gear could be explained by a prolonged operation of the aircraft under very low temperatures with a large number of landings completed with a total weight at the limit of tolerances. Also, the fact that the flaps were deployed at 25° upon landing resulted in a speed increase of approximately 20 km/h compared to a landing configuration with flaps extended at 35°, which could also be considered as a contributing factor.

Crash of an Antonov AN-12TB at Sovyetski AFB

Date & Time: Feb 16, 1971
Type of aircraft:
Operator:
Registration:
CCCP-11374
Flight Type:
Survivors:
Yes
Schedule:
Norilsk – Vorkuta
MSN:
4 024 04
YOM:
1964
Country:
Region:
Crew on board:
5
Crew fatalities:
Pax on board:
0
Pax fatalities:
Other fatalities:
Total fatalities:
0
Circumstances:
After takeoff from Norilsk Airport on a flight to Vorkuta by night, the crew was informed by ATC that a landing in Vorkuta was not possible due to poor weather conditions and a below-minima visibility. The crew was diverted to the Sovetskiy AFB located east of Vorkuta and also know as Vorkuta-2 Airport. In poor visibility and crosswinds, the airplane landed 15 metres to the left of the snow covered runway, crashed into the snow and came to rest, broken in two. All five crew members were unhurt while the aircraft was written off.
Probable cause:
Approach to a poor equipped airfield below minima weather conditions.

Crash of an Antonov AN-12B in Surgut: 7 killed

Date & Time: Jan 31, 1971 at 0441 LT
Type of aircraft:
Operator:
Registration:
CCCP-12996
Flight Type:
Survivors:
No
Schedule:
Tyumen - Surgut
MSN:
00 347 403
YOM:
1970
Country:
Region:
Crew on board:
6
Crew fatalities:
Pax on board:
1
Pax fatalities:
Other fatalities:
Total fatalities:
7
Aircraft flight hours:
391
Circumstances:
The airplane was completing a cargo flight from Tyumen to Surgut, carrying one passenger, six crew members and a load of 12 tons of herring from the Pacific. On final approach by night, at an altitude of 400 meters and a speed of 330 km/h, the captain requested 'flaps 15' when the airplane became unstable and rolled left and right. Few seconds later, the airplane entered a nose down attitude, reached the speed of 395 km/h and crashed in a left bank of 90° into an icy lake located 13,6 km from the runway threshold. The aircraft was totally destroyed and all sven occupants were killed.
Probable cause:
Loss of control caused by an excessive accumulation of ice on wing tips. The following factors were considered as contributing:
- Severe icing conditions,
- Misuse of the de-icing systems by the crew, especially with regard to air bleeding of the engines.

Crash of an Antonov AN-12B in Surgut: 14 killed

Date & Time: Jan 22, 1971 at 2136 LT
Type of aircraft:
Operator:
Registration:
CCCP-11000
Flight Type:
Survivors:
No
Schedule:
Omsk - Surgut
MSN:
5 3 436 10
YOM:
1965
Country:
Region:
Crew on board:
12
Crew fatalities:
Pax on board:
2
Pax fatalities:
Other fatalities:
Total fatalities:
14
Aircraft flight hours:
5626
Aircraft flight cycles:
2578
Circumstances:
The aircraft was completing a cargo flight from Omsk to Surgut, carrying two passengers, a crew of 12 (among them six reserve members) and a load of 12 tons of various construction equipments. While approaching Surgut Airport by night and icing conditions, at an altitude of 400 meters and a speed of 330 km/h, the pilot lost control of the airplane that crashed in flames 15 km short of runway. The aircraft was destroyed and all 14 occupants were killed.
Probable cause:
There were severe icing conditions at the time of the accident and the crew activated all de-icing equipment. Nevertheless, it appears that following the failure of a valve, the de-icing equipment was inoperative. An excessive accumulation of ice on the fuselage, the wings and all four engines caused the loss of control.

Crash of an Antonov AN-12 in Ivanovo: 7 killed

Date & Time: Oct 28, 1970
Type of aircraft:
Operator:
Flight Type:
Survivors:
No
Schedule:
Ivanovo - Ivanovo
Country:
Region:
Crew on board:
7
Crew fatalities:
Pax on board:
0
Pax fatalities:
Other fatalities:
Total fatalities:
7
Circumstances:
The crew was engaged in a local training mission at Ivanovo-Severny Air Base. On final approach by night and poor weather conditions, the captain decided to make a go-around when the airplane lost height and crashed. The airplane was destroyed and all seven crew members were killed.
Probable cause:
It is believed that the aircraft's speed was insufficient at the time the crew initiated a go-around procedure.

Crash of an Antonov AN-12B in Mys-Kamennyy: 8 killed

Date & Time: Oct 1, 1970 at 1927 LT
Type of aircraft:
Operator:
Registration:
CCCP-11031
Flight Type:
Survivors:
No
Schedule:
Mys-Kamennyy - Tyumen
MSN:
7 3 450 03
YOM:
1967
Country:
Region:
Crew on board:
7
Crew fatalities:
Pax on board:
1
Pax fatalities:
Other fatalities:
Total fatalities:
8
Aircraft flight hours:
3637
Aircraft flight cycles:
1768
Circumstances:
After delivering various equipment for a local oil exploitation company, the crew was returning to Tyumen and departed Mys-Kamennyy Airport at 1911LT in snow showers reducing the visibility to 1,8 km. During initial climb, the crew was cleared to climb to 6,600 meters when four minutes later, the captain declared an emergency and stated that both left engines failed. He was cleared to fly back to Mys-Kamennyy Airport and started a return circuit. At a distance of 18 km from the airfield, he reported runway in sight and lowered the gear shortly later then reduced his altitude to 250 meters at a distance of eight km. At five km, he reported that the aircraft was losing altitude when he was instructed to turn right. Shortly later, at a speed of 220 km/h, the airplane crashed in an icy swamp located 2,2 km short of runway and 450 meters to the left of its extended centerline. The aircraft was destroyed and all eight occupants were killed.
Probable cause:
Investigations were unable to determine the exact cause of the failure of both left engines. Nevertheless, the assumption that this was caused by the presence of ice crystals or pellets clogging a fuel line or a fuel filter was not ruled out as well as a valve failure. Poor weather conditions were considered as a contributing factor.