Crash of a Let L-410MA in Kostroma: 10 killed

Date & Time: Dec 4, 1984 at 0813 LT
Type of aircraft:
Operator:
Registration:
CCCP-67225
Flight Phase:
Survivors:
No
Schedule:
Kostroma – Ivanovo – Ulyanovsk
MSN:
77 07 06
YOM:
1977
Flight number:
SU637F
Country:
Region:
Crew on board:
2
Crew fatalities:
Pax on board:
8
Pax fatalities:
Other fatalities:
Total fatalities:
10
Aircraft flight hours:
3534
Aircraft flight cycles:
3007
Circumstances:
The twin engine aircraft departed Kostroma Airport at 0809LT on a flight to Ivanovo, carrying eight passengers and two pilots. After takeoff, while climbing in marginal weather conditions, the crew was instructed to report once the altitude of 1,800 meters would be reached but the crew failed to respond. The aircraft entered an uncontrolled descent and crashed in a wooded area located 11 km north of the airport. The aircraft was destroyed and all 10 occupants were killed.
Probable cause:
The exact cause of the accident could not be determined with certainty as investigations were hampered because the aircraft was not equipped with CVR/FDR. Nevertheless, it is believed that the pilot-in-command lost control of the airplane after he suffered a spatial disorientation caused by the malfunction/dysfunction of the horizontal gyro.

Crash of a Let L-410M in Chulman

Date & Time: Jul 4, 1984
Type of aircraft:
Operator:
Registration:
CCCP-67276
Survivors:
Yes
MSN:
78 10 07
YOM:
1978
Country:
Region:
Crew on board:
0
Crew fatalities:
Pax on board:
0
Pax fatalities:
Other fatalities:
Total fatalities:
0
Circumstances:
Upon landing at Chulman Airport, after a roll of 52 meters, the nose gear collapsed. The airplane slid on its nose and came to rest. There were no casualties.
Probable cause:
The nose gear collapsed following a hard landing on a poor runway condition and unfavorable winds.

Crash of a Let L-410UVP in Kansk

Date & Time: Oct 19, 1983
Type of aircraft:
Operator:
Registration:
CCCP-67315
Survivors:
Yes
Schedule:
Krasnoyarsk - Kansk
MSN:
82 08 15
YOM:
1982
Country:
Region:
Crew on board:
0
Crew fatalities:
Pax on board:
0
Pax fatalities:
Other fatalities:
Total fatalities:
0
Circumstances:
Following an uneventful flight from Krasnoyarsk-Severny Airport, the crew started the approach to Kansk-Tsentralny but was forced to divert to Kansk-Dalniy Airport due to poor weather conditions. Nevertheless, the crew landed in below-minima weather conditions at Dalniy Airport. After touchdown, the airplane was unable to stop within the remaining distance, overran, collided with an obstacle and came to rest. There were no casualties.

Crash of a Let L-410M in Poti: 6 killed

Date & Time: Mar 29, 1983 at 1518 LT
Type of aircraft:
Operator:
Registration:
CCCP-67190
Flight Phase:
Survivors:
Yes
Schedule:
Poti - Sukhumi
MSN:
78 11 19
YOM:
1978
Flight number:
SU070G
Country:
Region:
Crew on board:
3
Crew fatalities:
Pax on board:
15
Pax fatalities:
Other fatalities:
Total fatalities:
6
Aircraft flight hours:
3206
Aircraft flight cycles:
6096
Circumstances:
14 seconds after liftoff from runway 10 at Poti Airport, while climbing to a height of 60 meters at a speed of 195 km/h, both engines lost 60% of power. While the power on the left engine increased to 94,5% 11 seconds later, the power on the right engine dropped to zero. The crew elected to feather the right propeller but this was not possible. The airplane lost height, started a descent and slightly turned to the right when, at a speed of 130 km/h, it struck 20 meters high trees and crashed in a wooded area located 450 meters past the runway end. Two pilots and four passengers were killed while 12 other occupants were injured. The aircraft was destroyed.
Probable cause:
It was determined that the malfunction of the right engine was the consequence of a short-term failure of the rotor speed regulator, which forced the crew to shut down the engine and to feather the propeller. For unknown reasons, the propeller could not be feathered, causing drag that reduced the aircraft's speed and necessitating an emergency landing.

Crash of a Let L-410M in Sukhumi: 11 killed

Date & Time: Aug 14, 1982 at 1809 LT
Type of aircraft:
Operator:
Registration:
CCCP-67191
Flight Phase:
Survivors:
No
Schedule:
Sukhumi - Kutaisi
MSN:
78 11 20
YOM:
1978
Flight number:
SU73G
Country:
Region:
Crew on board:
2
Crew fatalities:
Pax on board:
9
Pax fatalities:
Other fatalities:
Total fatalities:
11
Aircraft flight hours:
2738
Aircraft flight cycles:
4098
Circumstances:
The Let L-410 departed the terminal and was approaching the runway to depart for a schedule service to Kutaisi, carrying nine passengers and a crew of two. At 1808LT, the crew of an Aeroflot Tupolev TU-134 registered CCCP-65836 was cleared for takeoff from runway 02. En route to Moscow-Vnukovo, the Tupolev was carrying 76 passengers and a crew of six. During the takeoff run, 26 seconds after it started to roll, at a speed of 195 km/h, the crew of the TU-134 sighted a Let L-410M entering the runway. The captain of the Tupolev decided to abandon the takeoff maneuver and initiated an emergency braking procedure. Spoilers were deployed and revers systems were activated. He elected to turn to the left to reach an exit taxiway. In the same time, the crew of the Let saw the Tupolev coming from their right and increased engine power to move forward. Seven seconds after the crew of the Tupolev rejected takeoff, at a speed of 216 km/h, the right wing of the Tupolev struck the Let that was destroyed upon impact. The Tupolev rolled for about 514 meters then veered off runway to the left and came to rest 48 meters to the left of its centerline. All 82 people on board the TU-134 escaped uninjured while all 11 people on board the Let were killed.
Probable cause:
It was determined that the collision was the consequence of a series of errors made by the crew of the Let L-410 who failed to follow ATC and ground controllers instructions regarding taxiing procedures prior to takeoff, which led them to enter the runway when he was not authorized to do so. A poor management in flights organization at Sukhumi Airport remains a contributing factor as well as few procedures violation on the part of ATC and ground controllers, among others concerning the use of a non-standard phraseology which may create confusion to the crew.

Crash of a Let L-410M near Praskoveyevka: 18 killed

Date & Time: Jan 7, 1982 at 1335 LT
Type of aircraft:
Operator:
Registration:
CCCP-67290
Flight Phase:
Survivors:
No
Site:
Schedule:
Gelendzhik – Sukhumi
MSN:
78 11 01
YOM:
1977
Flight number:
SU96G
Country:
Region:
Crew on board:
2
Crew fatalities:
Pax on board:
16
Pax fatalities:
Other fatalities:
Total fatalities:
18
Aircraft flight hours:
1895
Aircraft flight cycles:
3747
Circumstances:
The twin engine airplane departed Gelendzhik Airport at 1325LT on a schedule service to Sukhumi, Georgia, carrying 16 passengers and two pilots. Weather at that time was marginal with rain falls and a relative low ceiling. Four minutes after takeoff, at 1329LT, the crew informed ATC he was leaving the airport area and his position was about 12 km from the airport at an altitude of 450 meters. Six minutes later, while flying in clouds, the airplane struck trees and crashed in a wooded area located 22 km southeast of Gelendzhik Airport, bursting into flames. The burned wreckage was found three days later, on January 10, near Praskoveyevka, at an altitude of 350 meters. The aircraft was totally destroyed and all 18 occupants were killed.
Probable cause:
It was determined that the crew decided to continue the flight under VFR mode in adverse weather conditions and also failed to consider the wind component. This caused the aircraft to drift off course by 3,7 km to a mountainous area. While cruising in clouds at an insufficient altitude, the airplane contacted trees and crashed.

Crash of a Let 410M in Leningrad: 10 killed

Date & Time: Aug 3, 1979 at 1156 LT
Type of aircraft:
Operator:
Registration:
CCCP-67206
Survivors:
Yes
Schedule:
Smolensk – Velikiye Luki – Leningrad
MSN:
76 05 09
YOM:
1976
Flight number:
SU1643
Country:
Region:
Crew on board:
3
Crew fatalities:
Pax on board:
11
Pax fatalities:
Other fatalities:
Total fatalities:
10
Aircraft flight hours:
648
Aircraft flight cycles:
674
Circumstances:
On final approach to Leningrad-Rzhevka Airport, at a speed of 165 km/h, the right engine failed. The crew initiated a go-around maneuver and elected to feather the right propeller without success. The aircraft banked right to an angle of 25° then nosed down to an angle of 30° and crashed in flames in a wooded area located 500 meters short of runway threshold. The wreckage was found 550 meters to the right of the runway extended centerline. The aircraft was partially destroyed by a post crash fire and while four passengers were seriously injured, all 10 other occupants were killed.
Probable cause:
Failure of the right engine on final approach due to the destruction of the camshaft.

Crash of a Let L-410M in Belgorod: 3 killed

Date & Time: Jan 18, 1979 at 1115 LT
Type of aircraft:
Operator:
Registration:
CCCP-67210
Flight Type:
Survivors:
No
Schedule:
Belgorod - Belgorod
MSN:
76 05 13
YOM:
1976
Country:
Region:
Crew on board:
3
Crew fatalities:
Pax on board:
0
Pax fatalities:
Other fatalities:
Total fatalities:
3
Aircraft flight hours:
252
Aircraft flight cycles:
485
Circumstances:
The crew (one instructor and two student pilots) were completing a local training mission at Belgorod Airport. They departed Belgorod at 1020LT and completed several circuits over the region. While approaching the airport with the right engine out, the crew lost control of the airplane that entered a right turn then spiraled into the ground and crashed in a snow covered field located near the outer marker. The aircraft was totally destroyed and all three crew members were killed. Weather conditions were marginal at the time of the accident.
Probable cause:
Due to the extensive destruction of the aircraft, it was not possible to determine the exact cause of the accident. However, it is believed that the loss of control may have been caused by wrong informations provided by the horizons while on approach in poor weather conditions.

Crash of a Let L-410AF into Lake balaton: 1 killed

Date & Time: Aug 6, 1977
Type of aircraft:
Operator:
Registration:
HA-YFA
Flight Phase:
Flight Type:
Survivors:
Yes
Schedule:
Budaörs - Budaörs
MSN:
74 03 03
YOM:
1974
Country:
Region:
Crew on board:
2
Crew fatalities:
Pax on board:
2
Pax fatalities:
Other fatalities:
Total fatalities:
1
Circumstances:
The twin engine airplane departed Budaörs Airport in the morning on an aerial photography mission over the region with two photographers and two pilots on board. The airplane flew at an altitude of 5,000 meters then the crew descended to 3,000 and 1,500 meters. He was informed by ATC about skydiving operations in the area and while approaching Lake Balaton, the captain reduced his altitude to minimums. At a height of about one meter, the gear struck the water surface and the airplane crashed into the lake and sank about 1,500 meters offshore. Three occupants were rescued while the copilot was killed. The wreckage was recovered a day later.

Crash of a Let 410 in Uherské Hradiště: 4 killed

Date & Time: Jul 7, 1977
Type of aircraft:
Operator:
Registration:
OK-162
Flight Phase:
Flight Type:
Survivors:
No
Schedule:
d’Uherské Hradiště - d’Uherské Hradiště
MSN:
X03
YOM:
1970
Region:
Crew on board:
4
Crew fatalities:
Pax on board:
0
Pax fatalities:
Other fatalities:
Total fatalities:
4
Circumstances:
The crew (two pilots and two technicians) departed d’Uherské Hradiště-Kunovice Airport for a local test flight on this third L-410 prototype. While cruising at a relative low altitude, the pilot-in-command lost control of the airplane that dove into the ground and crashed in a field located in Nedakonice, few km from the airfield. The aircraft was destroyed and all four occupants were killed.
Probable cause:
It is believed that the loss of control occurred when the tail separated in flight after severe actions were performed on the rudder by the pilot.