Crash of a Bristol 170 Freighter 21 in the Tanezrouft Desert: 26 killed

Date & Time: Jul 29, 1950 at 0300 LT
Type of aircraft:
Operator:
Registration:
F-BENF
Flight Phase:
Survivors:
No
Site:
Schedule:
Paris – Algiers – Aoulef – Bidon V – Gao – Bamako
MSN:
12738
YOM:
1946
Country:
Region:
Crew on board:
4
Crew fatalities:
Pax on board:
22
Pax fatalities:
Other fatalities:
Total fatalities:
26
Circumstances:
The aircraft left Aoulef Airfield at 0245LT bound for Bidon V. During the next 15 to 30 minutes, the crew maintained few radio contacts with the ground and eventually, the contact was lost around 0300LT. SAR operations were conducted and the crew of a GLAM Douglas DC-4 found the wreckage about 30 hours later, around 1815LT some 50 km west of the trail leading from Reggan to Bidon V. The debris were scattered on more than 2 km about 106 km southwest of Aoulef and all 26 occupants have been killed. Most of the passengers were locals from Bamako flying back home for vacations after studying in France. It is believed that an explosion occurred in the left wing in flight, most probably in the fuel tank, causing the left wing to detach. In such conditions, the aircraft was uncontrollable. The exact cause of the detonation remains unknown.
Crew:
Cpt Le Monigou 3.
Probable cause:
The accident was probably caused by an explosion in the wing compartment containing the main starboard fuel tank. This explosion tore off part of the upper wing surface which started a vibration of the wing structure which then caused multiple failures in flight.
Final Report:

Crash of a Bristol 170 Freighter 21 in Cowbridge: 4 killed

Date & Time: Mar 21, 1950
Type of aircraft:
Operator:
Registration:
G-AHJJ
Flight Phase:
Flight Type:
Survivors:
No
Schedule:
Bristol - Bristol
MSN:
12742
YOM:
1946
Region:
Crew on board:
1
Crew fatalities:
Pax on board:
3
Pax fatalities:
Other fatalities:
Total fatalities:
4
Circumstances:
The aircraft was an MK.2 version and was recently converted to a 21 version. This flight was the second test one for the certification program. About 34 minutes after it left Bristol-Filton Airport, the airplane went out of control, dove into the ground and crashed in a field located in Cowbridge, south of Wales. All four occupants (three Bristol's engineers and one pilot) were killed.
Probable cause:
The accident was caused by a structural failure of the fuselage stern frame to which the fin was attached and must be attributed to the application on the fin and rudder of a load greater than the design ultimate load. Calculations suggested that the cause of this overloading was excessive rudder movement at a speed greater than 120 knots.

Crash of a Bristol 170 Freighter 21 near Tourane: 4 killed

Date & Time: Mar 10, 1950
Type of aircraft:
Registration:
F-BECR
Flight Type:
Survivors:
No
Site:
Schedule:
Huế - Tourane
MSN:
12782
YOM:
1946
Country:
Region:
Crew on board:
3
Crew fatalities:
Pax on board:
1
Pax fatalities:
Other fatalities:
Total fatalities:
4
Circumstances:
The crew was performing a short cargo flight from Huế to Tourane (Đà Nẵng). On approach, the aircraft hit the slope of a mountain and crashed. All four occupants were killed.

Crash of a Bristol 170 Freighter 21E in Mahón

Date & Time: Nov 24, 1949
Type of aircraft:
Operator:
Registration:
EC-ADK
Survivors:
Yes
Schedule:
Barcelona – Mahón
MSN:
12777
YOM:
1946
Flight number:
AO201
Country:
Region:
Crew on board:
4
Crew fatalities:
Pax on board:
22
Pax fatalities:
Other fatalities:
Total fatalities:
0
Circumstances:
Apparently following a wrong approach configuration, the aircraft landed very hard. Unable to stop within the remaining distance, it overran, lost its undercarriage and the right engine before coming to rest. All 26 occupants were unhurt while the aircraft was damaged beyond repair.

Crash of a Bristol 170 Freighter 1A in Burruyacú: 6 killed

Date & Time: Oct 25, 1949 at 1830 LT
Type of aircraft:
Operator:
Registration:
T-28
Flight Phase:
Flight Type:
Survivors:
Yes
Schedule:
El Palomar – Salta
MSN:
12750
YOM:
1946
Country:
Crew on board:
5
Crew fatalities:
Pax on board:
4
Pax fatalities:
Other fatalities:
Total fatalities:
6
Circumstances:
En route, the crew encountered unknown technical problems and the captain elected to make an emergency landing when the aircraft hit a tree and crashed on a hilly terrain. Three crew members and three passengers were killed while three other occupants were injured.

Crash of a Bristol 170 Freighter 1A near Morón AFB

Date & Time: Aug 31, 1949
Type of aircraft:
Operator:
Registration:
T-39
Flight Phase:
Survivors:
Yes
MSN:
12768
YOM:
1946
Country:
Crew on board:
4
Crew fatalities:
Pax on board:
0
Pax fatalities:
Other fatalities:
Total fatalities:
0
Circumstances:
After takeoff from Morón AFB, while climbing, the aircraft suffered an engine failure. The captain decided to make an emergency by the highway #7 when the aircraft hit buildings with its wings and crashed inverted. All four occupants were injured and the aircraft was damaged beyond repair.
Probable cause:
Engine failure.

Crash of a Bristol 170 Freighter 21 in Salasaca: 34 killed

Date & Time: Aug 6, 1949
Type of aircraft:
Operator:
Registration:
HC-SBU
Survivors:
No
Site:
Schedule:
Shell – Ambato
MSN:
12739
YOM:
1946
Country:
Crew on board:
3
Crew fatalities:
Pax on board:
31
Pax fatalities:
Other fatalities:
Total fatalities:
34
Circumstances:
The twin engine aircraft was performing a short charter flight from Shell-Mera Airport, in the Pastaza Province, to Ambato-Chachoán Airport, carrying a crew of three and 31 passengers who were going to Ambato to visit their families who suffered an earthquake that killed more than 5,000 people a day before. On final approach from the south in marginal weather conditions, the aircraft hit a hill located in Salasaca, some 11 km short of runway 01 threshold. The aircraft was destroyed by impact forces and all 35 occupants were killed.
Probable cause:
For undetermined reason, the crew was continuing the approach below the minimum prescribed altitude.

Crash of a Bristol 170 Freighter 31 off Isle of Portland: 7 killed

Date & Time: May 6, 1949 at 1110 LT
Type of aircraft:
Operator:
Registration:
G-AIFF
Flight Phase:
Flight Type:
Survivors:
No
Schedule:
Bristol - Bristol
MSN:
12766
YOM:
1946
Region:
Crew on board:
7
Crew fatalities:
Pax on board:
0
Pax fatalities:
Other fatalities:
Total fatalities:
7
Circumstances:
The crew consisting of pilots and engineers of the Bristol Aeroplane Company left Bristol-Filton Airport at 1003LT for a test flight to obtain engine and propeller datas in specific flight conditions. While cruising off the Isle of Portland, the twin engine aircraft went out of control and dove into The Channel. Some debris were found 26 km off the Portland's lighthouse and all seven crew members were killed.
Probable cause:
Loss of control caused by a structural failure in flight. Investigations were unable to determine the exact cause of the structural failure.

Crash of a Bristol 170 Freighter 21E in Los Barrios: 3 killed

Date & Time: Apr 11, 1948
Type of aircraft:
Operator:
Registration:
F-BENG
Flight Phase:
Flight Type:
Survivors:
No
Site:
Schedule:
Bordeaux – Gibraltar – Casablanca
MSN:
12812
YOM:
1947
Country:
Region:
Crew on board:
3
Crew fatalities:
Pax on board:
0
Pax fatalities:
Other fatalities:
Total fatalities:
3
Circumstances:
Shortly after a night takeoff from Gibraltar, while climbing to an altitude of 2,500 to 3,000 feet, the twin engine aircraft hit the slope of a mountain located in Los Barrios, northwest of Algeciras. The aircraft was destroyed and all three crew members were killed. They were performing a cargo flight from Bordeaux to Casablanca with an intermediate stop in Gibraltar. The aircraft was carrying a load of four tons of various goods.
Probable cause:
The published procedure for a departure from runway 27 at Gibraltar Airport states that crews have to make a turn to the left after takeoff in order to avoid the mountains near Algeciras. For unknown reason, the crew continued a straight in climb out after lift off, causing the aircraft to hit the mountain.

Crash of a Bristol 170 Freighter 21E into the Mediterranean Sea: 5 killed

Date & Time: Jan 25, 1948
Type of aircraft:
Registration:
F-BCJA
Flight Phase:
Flight Type:
Survivors:
No
Schedule:
Marseille – Rome – Athens – Nicosia – Baghdad – Saigon
MSN:
12802
YOM:
1946
Country:
Region:
Crew on board:
3
Crew fatalities:
Pax on board:
2
Pax fatalities:
Other fatalities:
Total fatalities:
5
Circumstances:
The aircraft was on its way to Indochina to be delivered to the Société Indochinoise de Transports Aériens (SITA) and was carrying two British engineers and three pilots. While cruising between Turkey and Cyprus, the aircraft crashed in unknown circumstances into the Mediterranean Sea, about 100 km north of the Cyprus coast. No trace of the aircraft nor the five occupants was ever found.