Crash of a De Havilland DHC-4A Caribou in Abu Dhabi

Date & Time: Jul 2, 1970
Type of aircraft:
De Havilland DHC-4 Caribou
Operator:
Registration:
302
Flight Phase:
Flight
Flight Type:
Military
Survivors:
Yes
Site:
Airport (less than 10 km from airport)
Schedule:
Abu Dhabi - Abu Dhabi
MSN:
272
YOM:
1969
Location:
Abu Dhabi
Abu Dhabi (إمارة أبو ظبي‎)
Country:
United Arab Emirates
Region:
Asia
Crew on board:
0
Crew fatalities:
Pax on board:
0
Pax fatalities:
Other fatalities:
Total fatalities:
0
Circumstances:
Crashed in unknown circumstances. No casualties.

Crash of a Rockwell Grand Commander 690 in Bethany

Date & Time: Jun 26, 1970 at 1527 LT
Type of aircraft:
Rockwell Grand Commander 690
Operator:
Registration:
N9202N
Flight Phase:
Flight
Flight Type:
Test
Survivors:
Yes
Site:
Airport (less than 10 km from airport)
Schedule:
Oklahoma City - Oklahoma City
MSN:
690-11002
YOM:
1969
Location:
Oklahoma City-Wiley Post
Oklahoma
Country:
United States of America
Region:
North America
Crew on board:
3
Crew fatalities:
Pax on board:
0
Pax fatalities:
Other fatalities:
Total fatalities:
0
Captain / Total flying hours:
9731
Captain / Total hours on type:
150.00
Circumstances:
The crew was engaged in a local test flight and departed Oklahoma-Wiley Post Airport in the early afternoon to test the aircraft that has a new tail design. While cruising at a speed of 243 knots in the vicinity of the airport, the rudder detached. The airplane entered a dive and crashed in a field located in Bethany, by the airport. All three crew members were seriously injured and the aircraft was destroyed.
Probable cause:
Uncontrolled descent caused by the failure of the rudder and the rudder tab control system that separated in flight. The following findings were reported:
- New design rudder,
- Non-prod tab,
- Arm. encountered sustained flutter at 243 knots,
- Empennage separated in flight.
Final Report:

Crash of a PZL-Mielec AN-2 near Magaramkent: 2 killed

Date & Time: Jun 22, 1970 at 0950 LT
Type of aircraft:
PZL-Mielec AN-2
Operator:
Registration:
CCCP-42651
Flight Phase:
Flight
Flight Type:
Scheduled Revenue Flight
Survivors:
Yes
Site:
Mountains
Schedule:
Akhty – Derbent – Makhachkala
MSN:
1G41-21
YOM:
1963
Flight number:
SU124
Location:
Magaramkent
Republic of Dagestan
Country:
Russia
Region:
Asia
Crew on board:
2
Crew fatalities:
Pax on board:
5
Pax fatalities:
Other fatalities:
Total fatalities:
2
Aircraft flight hours:
4882
Aircraft flight cycles:
8798
Circumstances:
The single engine airplane departed Akhty Airport at 0932LT on a return flight to Makhachkala with an intermediate stop in Derbent. While cruising at an altitude of 1,800 meters, the weather conditions deteriorated with more and more clouds. As the aircraft was flying in the direction of the Mt Gestinkil (2,785 meters high), the captain decided to climb to and altitude of 2,150 meters when the airplane struck the 45° slope of a mountain located in the region of Magaramkent, south part of Dagestan. As the copilot was slightly injured, he walked away to find help. On scene, rescuers were able to evacuate four injured people while two passengers died from their injuries.
Probable cause:
The accident was the consequence of a controlled flight into terrain caused by the fact that the crew continued under VFR mode in limited visibility due to clouds. Investigators reported that the airport authorities in Makhachkala and Akhty should not allow the crew to take off because of the deteriorating weather conditions, which remained a contributing factor.

Crash of a Fokker F27 Friendship 400M near Huaricanga: 5 killed

Date & Time: Jun 10, 1970
Type of aircraft:
Fokker F27 Friendship
Operator:
Registration:
TC-75
Flight Phase:
Flight
Flight Type:
Military
Survivors:
Yes
Site:
Mountains
Schedule:
Quito - Lima - Salta - Buenos Aires
MSN:
10411
YOM:
1969
Location:
Huaricanga
Ancash
Country:
Peru
Region:
South America
Crew on board:
3
Crew fatalities:
Pax on board:
5
Pax fatalities:
Other fatalities:
Total fatalities:
5
Aircraft flight hours:
838
Aircraft flight cycles:
944
Circumstances:
While cruising at an altitude of 4,500 meters in clouds, the airplane struck a mountain located in the region of Huaricanga. Three occupants were rescued while five others were killed.

Crash of a Fairchild AC-119K Stinger into the South China Sea: 1 killed

Date & Time: Jun 6, 1970
Type of aircraft:
Fairchild C-119 Flying Boxcar
Operator:
Registration:
52-5935
Flight Phase:
Flight
Flight Type:
Military
Survivors:
Yes
Site:
Lake, Sea, Ocean, River
Schedule:
Đà Nẵng - Đà Nẵng
MSN:
11114
YOM:
1952
Location:
South China Sea
World
Country:
World
Region:
World
Crew on board:
10
Crew fatalities:
Pax on board:
0
Pax fatalities:
Other fatalities:
Total fatalities:
1
Circumstances:
En route on a night gunship mission, the captain informed ground that he lost a propeller blade on the left engine. He elected to return to Đà Nẵng Airport but eventually decided to continue over the South China Sea where all 10 crew members abandoned the aircraft that crashed into the sea. Nine occupants were found alive while the body of the 10th crew member (T/Sgt Clyde Douglas Alloway) was not recovered.
Probable cause:
Lost of propeller blade in flight.

Crash of a Cessna 401 in Spruce Pine: 1 killed

Date & Time: May 27, 1970 at 0930 LT
Type of aircraft:
Cessna 401
Operator:
Thompson Street
Registration:
N4077Q
Flight Phase:
Flight
Flight Type:
Private
Survivors:
No
Site:
Plain, Valley
MSN:
401-0177
YOM:
1969
Location:
Spruce Pine
North Carolina
Country:
United States of America
Region:
North America
Crew on board:
1
Crew fatalities:
Pax on board:
0
Pax fatalities:
Other fatalities:
Total fatalities:
1
Captain / Total flying hours:
7686
Captain / Total hours on type:
1400.00
Circumstances:
En route, the left engine failed. The pilot reduced his altitude and attempted an emergency landing when the airplane struck a tree and crashed in flames. The aircraft was totally destroyed by a post crash fire and the pilot was killed.
Probable cause:
Powerplant failure for undetermined reasons. The following factors were considered as contributing:
- The pilot-in-command misjudged clearance,
- High obstructions,
- Partial loss of power on one engine,
- Cause of the left engine malfunction not determined due to ground fire.
Final Report:

Crash of a Curtiss C-46A-55-CK Commando off Puntarenas: 7 killed

Date & Time: May 22, 1970 at 1120 LT
Type of aircraft:
Curtiss C-46 Commando
Operator:
Registration:
YV-C-AMK
Flight Phase:
Flight
Flight Type:
Test
Survivors:
No
Site:
Lake, Sea, Ocean, River
Schedule:
San José - San José
MSN:
254
YOM:
1945
Location:
Puntarenas
Puntarenas (Central and South Pacific)
Country:
Costa Rica
Region:
Central America
Crew on board:
3
Crew fatalities:
Pax on board:
4
Pax fatalities:
Other fatalities:
Total fatalities:
7
Circumstances:
The crew (four technicians and three pilots) departed San José-Juan Santamaría Airport in the morning on a post maintenance test flight. En route, in unknown circumstances, the airplane went out of control and crashed into the gulf of Nicoya off Puntarenas. The wreckage was found 1,2 km east of San Lucas Island. All seven occupants were killed.

Crash of a Douglas C-47-DL near Prudhoe Bay

Date & Time: May 21, 1970 at 0040 LT
Type of aircraft:
Douglas C-47 Skytrain (DC-3)
Operator:
Club Aire
Registration:
N75430
Flight Phase:
Flight
Flight Type:
Executive/Corporate/Business
Survivors:
Yes
Site:
Plain, Valley
Schedule:
Pingo – Fairbanks
MSN:
4490
YOM:
1942
Location:
Prudhoe Bay
Alaska
Country:
United States of America
Region:
North America
Crew on board:
2
Crew fatalities:
Pax on board:
1
Pax fatalities:
Other fatalities:
Total fatalities:
0
Captain / Total flying hours:
8430
Captain / Total hours on type:
220.00
Circumstances:
En route to Fairbanks, while in cruising altitude, the crew encountered engine problems and was unable to maintain de prescribed altitude. He decided to perform an emergency landing in a snow covered ground when the airplane crash landed, slid for dozen yards and came to rest, broken in two. All three occupants were uninjured.
Probable cause:
Engine failure in flight caused by the combination of the following factors:
- Inadequate preflight preparation,
- Improper operation of powerplant & powerplant controls,
- Oil exhaustion, engine lubrication system,
- Improper/inadequate venting,
- Improper emergency procedures,
- Lack of familiarity with aircraft,
- Initiated flight into adverse weather conditions,
- Low ceiling,
- Fog,
- Conditions conducive to carburetor icing,
- Complete engine failure on one engine,
- Idled engines too long prior to takeoff, condensation froze,
- Plugged lower breather pipe, oil went out top pipe.
Final Report:

Crash of a PZL-Mielec AN-2R in Guran:2 killed

Date & Time: May 10, 1970 at 0930 LT
Type of aircraft:
PZL-Mielec AN-2
Operator:
Registration:
CCCP-32463
Flight Phase:
Flight
Flight Type:
Spraying (Agricultural)
Survivors:
Yes
Site:
Plain, Valley
Schedule:
Guran - Guran
MSN:
1G99-30
YOM:
1969
Location:
Guran
Irkutsk oblast
Country:
Russia
Region:
Asia
Crew on board:
2
Crew fatalities:
Pax on board:
1
Pax fatalities:
Other fatalities:
Total fatalities:
2
Aircraft flight hours:
952
Aircraft flight cycles:
1070
Circumstances:
On a crop-spraying flight from Guran (Tulun district of the Irkutsk region) for the kolkhoz 'Zavyety Ilyicha', the intoxicated crew made a steep turn at very low height when the aircraft lost speed and height and crashed. A pilot and the sole passenger (the director of the collective farm) were killed while the second pilot was seriously injured.
Probable cause:
It was determined that the loss of control was the consequence of an intoxicated crew.
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