Crash of a Douglas C-47A-40-DL in Miraflores: 2 killed

Date & Time: Jun 17, 1981
Operator:
Registration:
HK-1078
Survivors:
Yes
MSN:
9884
YOM:
1943
Country:
Crew on board:
4
Crew fatalities:
Pax on board:
8
Pax fatalities:
Other fatalities:
Total fatalities:
2
Circumstances:
On approach to Miraflores Airport, the crew was instructed to make a go-around as the runway was used by another aircraft. While in traffic pattern and positioning for a second approach, the crew declared an emergency after one of the engine failed. The propeller was feathered and the captain attempted an emergency landing when the airplane crashed near the airport. A crew member and one passenger were killed while all other occupants were injured.
Probable cause:
Engine failure for unknown reasons.

Crash of a Hindustan Aeronautics HAL-748-224-2 in Tirupati

Date & Time: Jun 16, 1981 at 1627 LT
Operator:
Registration:
VT-DXI
Flight Phase:
Survivors:
Yes
Schedule:
Madras – Tirupati – Hyderabad
MSN:
514
YOM:
1968
Flight number:
IC519
Country:
Region:
Crew on board:
4
Crew fatalities:
Pax on board:
24
Pax fatalities:
Other fatalities:
Total fatalities:
0
Captain / Total flying hours:
5234
Circumstances:
The aircraft crash landed immediately after takeoff about 1-1/2 km southwest of Tirupati Airport. Soon after takeoff, when the aircraft had attained a height of 245 feet above ground level, it encountered heavy rain and the aircraft started losing height with a drop in speed. As this phase of flight flaps were retracted fully inadvertently. In the following 18 seconds, the aircraft sank to ground level and struck the ground in a tail down attitude and crashed. Two crew members received serious injuries and two received minor injuries. The aircraft was damaged beyond repair.
Probable cause:
The cause of the accident has been attributed to the aircraft encountering heavy rains and down draught immediately after take off while passing through an active Cumulus Nimbus cloud and poor airmanship exhibited by the flight crew.

Crash of a Britten-Norman BN-2A-8 Islander in Congo

Date & Time: Jun 15, 1981
Type of aircraft:
Operator:
Registration:
TN-ADS
Survivors:
Yes
MSN:
127
YOM:
1970
Location:
Country:
Region:
Crew on board:
0
Crew fatalities:
Pax on board:
0
Pax fatalities:
Other fatalities:
Total fatalities:
0
Circumstances:
Crashed in unknown circumstances somewhere in Congo. There were no casualties. The mishap occurred somewhere in June 1981 (exact date unknown).

Crash of an Ilyushin II-14M near Ust-Barguzin: 48 killed

Date & Time: Jun 14, 1981 at 1622 LT
Type of aircraft:
Operator:
Registration:
CCCP-41838
Flight Phase:
Survivors:
No
Site:
Schedule:
Severomuysk – Nizhneangarsk - Ulan-Ude
MSN:
1470 011 41
YOM:
1957
Flight number:
SU498
Country:
Region:
Crew on board:
4
Crew fatalities:
Pax on board:
44
Pax fatalities:
Other fatalities:
Total fatalities:
48
Aircraft flight hours:
16185
Aircraft flight cycles:
18427
Circumstances:
The airplane departed Severomuysk Airport at 1441LT on a schedule service to Ulan-Ude with an intermediate stop in Nizhneangarsk, carrying 44 passengers and a crew of four. Bound to the west, while cruising to an altitude of 3,600 meters, the crew was informed about poor weather conditions at destination. As the Nizhneangarsk Airport was closed to traffic, the crew was instructed to divert to Ust-Barguzin Airport located on the east shore of Lake Baykal, in the Svyatoi Nos peninsula. While descending to Ust-Barguzin Airport at an altitude of 1,300 meters, the airplane struck the slope of a mountain and crashed 30 km northwest of Ust-Barguzin. The airplane was destroyed upon impact and all 48 occupants were killed.
Probable cause:
It was determined that the crew failed to follow the prescribed procedures and initiated the descent prematurely under VFR mode in IMC conditions. Due to unfavorable wind component (200° at 25 km/h iso 250° at 50 km/h as initially forecasted), the airplane was not on the calculated route and ATC was unaware of the exact position of the airplane due to lack of contact from the crew and due to discrepancies in the radiogoniometer settings. This situation resulted in a controlled flight into terrain.

Crash of a Britten-Norman BN-2A-8 Islander near Hualien: 2 killed

Date & Time: Jun 13, 1981
Type of aircraft:
Operator:
Registration:
B-11108
Flight Phase:
Survivors:
No
Schedule:
Taitung – Hualien – Taipei
MSN:
701
YOM:
1973
Country:
Region:
Crew on board:
2
Crew fatalities:
Pax on board:
0
Pax fatalities:
Other fatalities:
Total fatalities:
2
Circumstances:
After takeoff from Hualien Airport, while climbing in thunderstorm activity, the airplane encountered severe turbulences. It went out of control, dove into the ground and crashed in a cliff located 12 km from Hualien. Both occupants were killed.
Probable cause:
Loss of control due to severe turbulences in stormy weather.

Crash of a Tupolev TU-154A in Bratsk

Date & Time: Jun 13, 1981
Type of aircraft:
Operator:
Registration:
CCCP-85029
Survivors:
Yes
Schedule:
Moscow – Omsk – Bratsk
MSN:
72A029
YOM:
1972
Country:
Region:
Crew on board:
7
Crew fatalities:
Pax on board:
111
Pax fatalities:
Other fatalities:
Total fatalities:
0
Circumstances:
The airplane departed Moscow-Vnukovo Airport on a schedule service to Bratsk with an intermediate stop in Omsk. On approach to Bratsk Airport, the crew encountered limited visibility due to heavy rain falls. One second after touchdown, the reverses were activated on all three engines and the airplane rolled for about 800 meters when it started to veer to the left. The pilot-in-command attempted to counteract the deviated but the airplane rolled another 526 meters when it veered off runway. It rolled few dozen meters on soft ground then came to rest, broken in two. All occupants escaped uninjured.
Probable cause:
The cause of the accident was the uncontrollability of the aircraft on a wet runway due to the complete loss of rudder efficiency at the maximum reverse engine thrust due to the design characteristics of the aircraft.

Crash of a Convair CV-440-11 Metropolitan on Mt Pinarete: 24 killed

Date & Time: May 21, 1981 at 1600 LT
Operator:
Registration:
XA-KEH
Flight Phase:
Survivors:
No
Site:
Schedule:
Puerto Escondido - Oaxaca
MSN:
327
YOM:
1956
Country:
Crew on board:
3
Crew fatalities:
Pax on board:
21
Pax fatalities:
Other fatalities:
Total fatalities:
24
Circumstances:
While cruising at an altitude of 8,867 feet on a flight from Puerto Escondido to Oaxaca de Juárez, the airplane struck the slope of Mt Pinarete. The wreckage was found few hours later and all 24 occupants were killed. At the time of the accident, the cloud base was reported at 10,000 feet.
Probable cause:
Controlled flight into terrain.

Crash of a PZL-Mielec AN-2 near Olyokminsk

Date & Time: May 21, 1981 at 1019 LT
Type of aircraft:
Operator:
Registration:
CCCP-35198
Flight Phase:
Survivors:
Yes
Schedule:
Vitim – Lensk – Olyokminsk
MSN:
1G144-22
YOM:
1970
Country:
Region:
Crew on board:
2
Crew fatalities:
Pax on board:
7
Pax fatalities:
Other fatalities:
Total fatalities:
0
Aircraft flight hours:
11350
Circumstances:
The single engine airplane departed Lensk Airport at 0909LT on the second leg of a flight from Vitim to Olyokminsk. About an hour later, while cruising at an altitude of 1,500 meters, the engine started to vibrate and the crew decided to attempt an emergency landing. The airplane descended into trees and crashed in a wooded area located 122 northwest of Olyokminsk, bursting into flames. All nine occupants escaped uninjured while the aircraft was destroyed by fire.
Probable cause:
The engine failure was the consequence of the disintegration of the 4th cylinder intake valve.

Crash of a BAc 111-529FR off Buenos Aires: 31 killed

Date & Time: May 7, 1981 at 1053 LT
Type of aircraft:
Operator:
Registration:
LV-LOX
Survivors:
No
Schedule:
San Miguel de Tucumán - Buenos Aires
MSN:
212
YOM:
1970
Flight number:
AU901
Country:
Crew on board:
5
Crew fatalities:
Pax on board:
26
Pax fatalities:
Other fatalities:
Total fatalities:
31
Aircraft flight hours:
21729
Circumstances:
Following an uneventful flight from San Miguel de Tucumán, the crew started the descent to Buenos Aires-Aeroparque-Jorge Newbury Airport. At 1035LT the Tower controller cleared the flight to descend to 750 metres to the San Fernando VOR and cleared the flight for a direct approach to runway 13 from the VOR. At 1040LT the flight reported over the OP VOR and was cleared to land. The wind had shifted from 6 knots at 60° to 12 knots at 030°. Visibility was reducing. At 1042LT the crew reported the runway in sight and obtained the current weather information, which included heavy rainfall, wind 360 degrees at 10 knots. The pilots lost sight of the runway and decided to abort the approach. The One-Eleven continued South to the Quilmes (ILM) NDB. The Tower controller cleared the flight to hold over the ILM beacon at 900 metres. Because of Cumulonimbus clouds over the NDB, the crew requested a holding pattern over the Río de la Plata at 600 metres. At 10:52 they were cleared for another straight in approach to runway 31. Shortly afterwards the pilots lost control of the plane, which crashed into the river. Just 55-65% of the wreckage was recovered; both FDR and CVR were not found after 42 days of searching. All 31 occupants were killed.
Probable cause:
Loss of control of the aircraft and impact with the water by an error of appreciation by the pilot in assessing the meteorological conditions on crossing through a zone of influence of an extremely violent cumulonimbus.
Final Report:

Crash of a Vickers 832 Viscount in Semarang

Date & Time: May 1, 1981
Type of aircraft:
Operator:
Registration:
PK-RVN
Survivors:
Yes
Schedule:
Jakarta - Semarang
MSN:
415
YOM:
1959
Country:
Region:
Crew on board:
4
Crew fatalities:
Pax on board:
40
Pax fatalities:
Other fatalities:
Total fatalities:
0
Circumstances:
For unknown reasons, the four engine airplane landed hard at Semarang-Ahmad Yani Airport. On touchdown, the right main gear and the nose gear were torn off. Out of control, the airplane veered off runway to the right and came to rest. All 44 occupants escaped uninjured while the aircraft was damaged beyond repair.