Crash of an Antonov AN-10A in Rus'ka Lozova: 122 killed

Date & Time: May 18, 1972 at 1153 LT
Type of aircraft:
Operator:
Registration:
CCCP-11215
Survivors:
No
Schedule:
Moscow - Kharkiv
MSN:
0 4 025 02
YOM:
1960
Flight number:
SU1491
Country:
Region:
Crew on board:
7
Crew fatalities:
Pax on board:
115
Pax fatalities:
Other fatalities:
Total fatalities:
122
Aircraft flight hours:
15483
Aircraft flight cycles:
11105
Circumstances:
Following an uneventful flight from Vnukovo Airport at an altitude of 7,200 meters, the crew was cleared to approach Kharkiv-Osnova Airport and to descent to 1,500 meters. While approaching at a speed of 400-500 km/h with a rate of descent of 6 meters per second, the airplane lost its both wings, dove into the ground and crashed in a wooded area located in Rus'ka Lozova, about 25 km north of Kharkiv-Osnova Airport. The aircraft was totally destroyed and all 122 occupants were killed.
Probable cause:
It was determined that a structural failure of the center section lower panel caused the failure of both wings due to fatigue cracks. The rate of descent and the presence of atmospheric turbulences were considered as contributing factors. Investigations revealed that this portion of the aircraft could not be inspected by technicians during a maintenance process due to a faulty conception of the aircraft, thus the fatigue fractures could not be detected in time. Following this tragedy, the Antonov AN-10 would not be operated anymore in passenger service.

Crash of a Tupolev TU-104B in Moscow: 25 killed

Date & Time: Oct 10, 1971 at 2017 LT
Type of aircraft:
Operator:
Registration:
CCCP-42490
Flight Phase:
Survivors:
No
Schedule:
Moscow - Simferopol
MSN:
0 2 16 03
YOM:
1960
Flight number:
SU773
Country:
Region:
Crew on board:
7
Crew fatalities:
Pax on board:
18
Pax fatalities:
Other fatalities:
Total fatalities:
25
Circumstances:
Shortly after takeoff from Moscow-Vnukovo Airport, while climbing by night, the airplane entered a right turn, lost height, banked right 90° then struck power cables and crashed in a field located 10 km south of the airport. The airplane was totally destroyed by impact forces and all 25 occupants were killed.
Probable cause:
It was determined that an explosive device composed by 400 to 800 grams of trinitrotoluene (TNT) exploded approximately 7 to 15 seconds after rotation. The bomb was apparently placed in a hand baggage placed on the cabin floor, maybe under the seat number 45. The detonation ruptured the cabin floor, the left root and the control cables were cut and inoperative. The airplane entered an uncontrolled descent and lost several pieces at an altitude of 200 meters before striking the ground. Despite extensive investigations that will end in 1973, the Soviet authorities wont be able to identify the author of this act of sabotage.

Crash of an Ilyushin II-18B in Moscow: 16 killed

Date & Time: Aug 26, 1969 at 2031 LT
Type of aircraft:
Operator:
Registration:
CCCP-75708
Survivors:
Yes
Schedule:
Sochi - Moscow - Norilsk
MSN:
189 0017 05
YOM:
1959
Flight number:
SU1770
Country:
Region:
Crew on board:
7
Crew fatalities:
Pax on board:
94
Pax fatalities:
Other fatalities:
Total fatalities:
16
Aircraft flight hours:
12023
Aircraft flight cycles:
4367
Circumstances:
On final approach to Moscow-Vnukovo, the flying crew was not concentrated and failed to lower the landing gear. The aircraft belly landed and slid for dozen yards before coming to rest in flames. Forty people were uninjured, 46 were wounded and 16 passengers were killed after the aircraft caught fire due to hydraulic leak and an electrical short-circuit in the cargo compartment.
Probable cause:
It was determined that the crew failed to follow the approach checklist and forgot to lower the undercarriage. The following factors were considered as contributing:
- Several propeller blades detached while contacting the runway surface, causing severe damage to the fuselage,
- A fire erupted following an electrical short-circuit in the cargo hold combined with a hydraulic leak,
- Lack of coordination on part of the cabin crew who failed to follow the safety and evacuation procedures,
- Lack of efficiency and assistance on part of the ground firefighters who arrived on the scene 15-20 minutes after the accident.

Crash of an Ilyushin II-18V in Moscow: 8 killed

Date & Time: Apr 6, 1967 at 0328 LT
Type of aircraft:
Operator:
Registration:
CCCP-75563
Flight Phase:
Flight Type:
Survivors:
No
Schedule:
Moscow - Moscow
MSN:
184 0078 02
YOM:
1964
Country:
Region:
Crew on board:
8
Crew fatalities:
Pax on board:
0
Pax fatalities:
Other fatalities:
Total fatalities:
8
Aircraft flight hours:
2264
Aircraft flight cycles:
929
Circumstances:
Following an uneventful flight from Krasnoyarsk to Moscow-Domodedovo, the crew was supposed to complete a positioning flight to Moscow-Vnukovo Airport on behalf of the 235th Separate Aviation Detachment for the Soviet Government. Less than two minutes after takeoff from Domodedovo Airport, while climbing by night, the pilot-in-command started a turn to the left according to published procedures when control was lost. The airplane entered a dive and crashed in a huge explosion in an open field located about 3 km past the runway end. The aircraft disintegrated on impact and debris scattered on a distance of 650 meters long by 180 meters wide. All eight crew members were killed.
Probable cause:
Investigations were unable to determined the exact cause of the accident. All four engines were functioning properly at impact and some vibrations may have occur on both wings, maybe following ailerons issues.

Crash of a Tupolev TU-124 in Leningrad

Date & Time: Aug 21, 1963 at 1215 LT
Type of aircraft:
Operator:
Registration:
CCCP-45021
Survivors:
Yes
Schedule:
Tallinn – Moscow
MSN:
2 35 07 01
YOM:
1962
Country:
Region:
Crew on board:
5
Crew fatalities:
Pax on board:
47
Pax fatalities:
Other fatalities:
Total fatalities:
0
Circumstances:
Shortly after takeoff from Tallinn-Ülemiste Airport at 0855LT, while climbing, the crew encountered technical problems with the undercarriage that could not be raised properly. As there was fog in Tallinn, the crew decided to divert to Leningrad-Pulkovo Airport. The airplane arrived over Leningrad at 1100LT and the crew was authorized to following a holding circuit at an altitude of 500 meters. During the eight circuit, while the fuel jauges indicates a quantity of 750 liters remaining, the left engine stopped. The crew received the permission to land when the right engine failed as well. In such conditions, the captain decided to attempt an emergency landing on the Neva River. On touchdown, the aircraft slid for several yards and came to rest near the riverbank. All 52 occupants were evacuated safely and only two occupants were slightly injured. The aircraft was damaged beyond repair and later used for ground training.
Probable cause:
Failure of both engines due to a fuel exhaustion caused by an excessive consumption due to the fact that the flight from Tallinn to Leningrad was performed with the undercarriage down. It was also noted that the settings belonging to the fuel jauges failed to reflect the truth, which was considered as a contributing factor. Also, the crew failed to manage the emergency situation properly.

Crash of an Ilyushin II-18B near Chebotovka: 59 killed

Date & Time: Dec 17, 1961 at 1600 LT
Type of aircraft:
Operator:
Registration:
CCCP-75654
Flight Phase:
Survivors:
No
Schedule:
Moscow – Sochi
MSN:
188 0005 03
YOM:
1958
Flight number:
SU245
Country:
Region:
Crew on board:
9
Crew fatalities:
Pax on board:
50
Pax fatalities:
Other fatalities:
Total fatalities:
59
Aircraft flight hours:
2722
Circumstances:
While cruising at an altitude of 8,000 meters in good weather conditions, the four engine airplane went out of control, entered a dive and reached an angle of 107° and a speed of 630 km/h before crashing in a snow covered field located 10 km east of Chebotovka, in the Rostov region. The aircraft disintegrated on impact and all 59 occupants were killed.
Probable cause:
It was determined that the loss of control was the consequence of an error on part of the flight mechanic who inadvertently positioned the flaps in an angle of 40° while in cruising flight. This reduced the longitudinal stability and the control was rapidly lost. It was reported that the flap lever was not protected against accidental actuation which was considered as a contributing factor.

Crash of an Ilyushin II-18B in Riga

Date & Time: Aug 13, 1961
Type of aircraft:
Operator:
Registration:
CCCP-75653
Flight Type:
Survivors:
Yes
Schedule:
Moscow – Riga
MSN:
188 0005 02
YOM:
1958
Country:
Region:
Crew on board:
6
Crew fatalities:
Pax on board:
0
Pax fatalities:
Other fatalities:
Total fatalities:
0
Circumstances:
The approach to Riga Airport was completed in a reduced visibility due to foggy conditions. The aircraft landed long and after touchdown, was unable to stop within the remaining distance. It overran, lost its nose gear and came to rest in a field located 200 meters from the Daugava River. All six crew members were evacuated safely while the aircraft was damaged beyond repair.

Crash of an Ilyushin II-18 in Bogoroditsk

Date & Time: Jun 22, 1961
Type of aircraft:
Operator:
Registration:
CCCP-75672
Flight Phase:
Survivors:
Yes
Schedule:
Moscow – Sochi
MSN:
189 0009 01
YOM:
1959
Country:
Region:
Crew on board:
8
Crew fatalities:
Pax on board:
89
Pax fatalities:
Other fatalities:
Total fatalities:
0
Circumstances:
While cruising at an altitude of 6,100 meters on a flight from Moscow-Vnukovo Airport to Sochi-Adler Airport, the generator on engine number three failed. Debris punctured a hydraulic line and the fluid caught fire while in contact with high temperature elements of the engine. As the fire extinguishing system failed to work properly, the crew decided to shut down all three other engines and completed a gear up landing in a field. The airplane slid for several yards and came to rest. All 97 occupants were evacuated safely.
Probable cause:
Failure of the generator on engine number 3 for unknown reason. This caused the rupture of a hydraulic line and the fluid caught fire while contacting engine elements. The reason of the dysfunction of the fire extinguishing system remains unknown.

Crash of an Ilyushin II-14 in Moscow: 28 killed

Date & Time: Oct 23, 1959 at 2210 LT
Type of aircraft:
Operator:
Registration:
CCCP-41806
Survivors:
Yes
Schedule:
Baku – Makhatchkala – Astrakhan – Stalingrad – Moscow
MSN:
6 34 17 09
YOM:
31
Flight number:
SU200
Country:
Region:
Crew on board:
5
Crew fatalities:
Pax on board:
24
Pax fatalities:
Other fatalities:
Total fatalities:
28
Aircraft flight hours:
4945
Circumstances:
On approach to Moscow-Vnukovo, the crew encountered marginal weather conditions with clouds and limited visibility. By night, the aircraft passed below the glide until it struck tree tops and crashed in flames in a wooded area located 1,400 meters short of runway 02 threshold. The aircraft was destroyed by impact forces and a post crash fire and only one passenger survived. Among those killed were the Russian composer Sergei Artyomevich Agababov aged 32.
Probable cause:
The accident was the consequence of poor approach techniques on part of the flying crew who allowed the aircraft to descent below the glide in poor visibility until the airplane struck obstacles. Following factors were considered as contributory:
- The crew was tired and failed to observe a sufficient rest time,
- At the time of the accident, the crew was on duty since 13h50 with 5h53 cumulated flying hours,
- The pilots performances were diminished by fatigue and work overload,
- The copilot's experience was insufficient,
- Poor visibility due to the night and a cloud layer down to 60 meters from the ground.

Crash of an Ilyushin II-18B in Moscow

Date & Time: Sep 2, 1959
Type of aircraft:
Operator:
Registration:
CCCP-75676
Flight Phase:
Survivors:
Yes
MSN:
189 0009 05
YOM:
1959
Country:
Region:
Crew on board:
8
Crew fatalities:
Pax on board:
48
Pax fatalities:
Other fatalities:
Total fatalities:
0
Circumstances:
While cruising at an altitude of 10,000 meters over the region of Voronezh, the airplane penetrated cumulonimbus area and suffered updrafts first. It climbed to 10,700 meters then encountered downdrafts and descended to 7,000 meters. The propellers on both engines number one and four were automatically feathered when new downdrafts were encountered. The airplane descended to the altitude of 2,800 meters when the crew was able to recover control of the airplane. The crew contacted ATC and obtained the permission to return to Vnukovo for an emergency landing. Following an uneventful landing, all 56 occupants (some of them injured) were evacuated and the aircraft was later declared as damaged beyond economical repair due to heavy damage to the structure. Also, it was reported that the chemical liquid stored in the toilet compartment leaked and contacted several electrical system, causing short-circuits. Several connectors were down as well as the VHF communication system.
Probable cause:
Emergency landing following in-flight downdrafts and turbulences.