Crash of a Pilatus PC-6/C-H2 Turbo Porter in Tin Bong

Date & Time: Apr 5, 1972
Operator:
Registration:
N195X
Flight Phase:
Survivors:
Yes
MSN:
593
YOM:
1966
Country:
Region:
Crew on board:
1
Crew fatalities:
Pax on board:
2
Pax fatalities:
Other fatalities:
Total fatalities:
0
Circumstances:
While taking off from Tin Bong Airfield, the single engine airplane rolled on a landmine and exploded. It came to rest and was destroyed. All three occupants were injured.
Probable cause:
Destroyed while contacting a landmine on takeoff.

Crash of a De Havilland C-7A Caribou in Pha Khao: 1 killed

Date & Time: Feb 4, 1972
Type of aircraft:
Operator:
Registration:
393
Survivors:
Yes
Schedule:
Ban Xon - Pha Khao
MSN:
51
YOM:
1962
Country:
Region:
Crew on board:
4
Crew fatalities:
Pax on board:
34
Pax fatalities:
Other fatalities:
Total fatalities:
1
Circumstances:
On final approach to Pha Khao Airstrip (LS-14), obstruction was sighted on the runway and the captain decided to make a go-around. For unknown reason, the left engine failed to respond and the aircraft stalled and struck the runway surface. It bounced heavily, went out of control and veered off runway. It lost its undercarriage and its right wing before coming to rest. All 34 passengers, Laotian military personnel, were evacuated while all a crew member was killed, three other being injured.
Crew:
Gordon V. Smith, pilot,
D. M. Houston, copilot,
M. S. Bailey, flight engineer,
Khamouth Sousadalay, kicker. †

Crash of a Fairchild C-123K Provider near Oudom: 4 killed

Date & Time: Dec 27, 1971
Type of aircraft:
Operator:
Registration:
293
Flight Phase:
Flight Type:
Survivors:
No
Schedule:
Udon Thani – Ban Xieng Lom
MSN:
20303
YOM:
1957
Country:
Region:
Crew on board:
4
Crew fatalities:
Pax on board:
0
Pax fatalities:
Other fatalities:
Total fatalities:
4
Circumstances:
The C-123K transport plane departed Udon Thani RTAFB (UTH), Thailand on a so called Peppergrinder flight, which consisted of loading and dispatching mixed ordnance for use in Laos. Destination was Ban Xieng Lom Airstrip (LS-69). The airplane was loaded with 12,892 pounds of mixed ordnance, including 75 mm shells, 81 mm rounds, 222 caliber small arms ammunition and white phosphorus smoke rounds. Based on the computed crosswinds at 8,500 feet, 293's reported altitude, it was likely that 293 was to the right of his desired track enroute out of Udon Than and at a higher than normal ground speed. The pilot though supposedly well familiar with the route, was likely flying an inadequate cross-wind correction heading in and out of cloud bases. This could have placed him to the right of L-23 and, later, well to the right and beyond LS-62 since no navigational aids were available. A valley, similar to that of LS-62, is present just to the northeast of LS-62 and close to Route 46. Had the captain been to the northeast of his reported position at LS-62 and initiated a descending left turn towards LS-69, the enemy reaction over Route 46 would be immediate and violent. Large anti-aircraft guns were only 15 miles north of LS-62.
Source: ASN
Probable cause:
Although the cause of the disappearance of 293 must be listed as undetermined, the aircraft probably strayed from course and, over exceedingly hostile country, was hit by enemy fire and rapidly destroyed.

Crash of a Pilatus PC-6/C-H2 Turbo Porter in Long Tieng

Date & Time: Dec 24, 1971
Operator:
Registration:
N197X
Survivors:
Yes
MSN:
597
YOM:
1966
Country:
Region:
Crew on board:
1
Crew fatalities:
Pax on board:
4
Pax fatalities:
Other fatalities:
Total fatalities:
0
Circumstances:
After landing at Long Tieng Airfield, the single engine airplane went out of control, veered off runway and collided with fuel drums. Several explosions occurred, destroyed the aircraft and a parked Fairchild C-123K Provider registered 54-0613. All five occupants evacuated safely.

Crash of a Curtiss C-46D-20-CU Commando in Bouam Long: 2 killed

Date & Time: Jun 2, 1971
Type of aircraft:
Operator:
Registration:
XW-PFL
Flight Phase:
Flight Type:
Survivors:
No
Site:
MSN:
22228
YOM:
1945
Country:
Region:
Crew on board:
2
Crew fatalities:
Pax on board:
0
Pax fatalities:
Other fatalities:
Total fatalities:
2
Circumstances:
While cruising at low height on a cargo flight, the airplane was shot down and crashed in flames in a mountainous area. Both crew members were killed.
Probable cause:
Shot down.

Crash of a Pilatus PC-6/C-H2 Turbo Porter in Muang Nham: 4 killed

Date & Time: Apr 29, 1971
Operator:
Registration:
N180K
Flight Phase:
Survivors:
No
MSN:
550
YOM:
1963
Country:
Region:
Crew on board:
1
Crew fatalities:
Pax on board:
3
Pax fatalities:
Other fatalities:
Total fatalities:
4
Circumstances:
In unknown circumstances, the single engine airplane collided with a USAF Cessna U-17A (Cessna 185) registered 65-10853 and carrying two people. Both aircraft crashed, killing all six occupants.

Crash of a Pilatus PC-6/C-H2 Turbo Porter near Chiang Mai

Date & Time: Apr 20, 1971 at 0747 LT
Operator:
Registration:
N199X
Flight Phase:
Flight Type:
Survivors:
Yes
Site:
Schedule:
Chiangmai - Chiangmai
MSN:
601
YOM:
1966
Country:
Region:
Crew on board:
1
Crew fatalities:
Pax on board:
2
Pax fatalities:
Other fatalities:
Total fatalities:
0
Captain / Total flying hours:
7611
Captain / Total hours on type:
4048.00
Circumstances:
The single engine airplane departed Chiang Mai Airport for a local supply mission. In unknown circumstances, the pilot lost control of the airplane that crashed in flames in a wooded area located in the mountains of the Doi Suthep-Pui National Park located northwest of Chiang Mai. While all three occupants were rescued, the aircraft was destroyed by a post crash fire.

Crash of a Pilatus PC-6/C-H2 Turbo Porter in Tha Tham Bleung: 3 killed

Date & Time: Mar 21, 1971
Operator:
Registration:
XW-PCB
Flight Phase:
Survivors:
No
Site:
MSN:
567
YOM:
1964
Country:
Region:
Crew on board:
1
Crew fatalities:
Pax on board:
2
Pax fatalities:
Other fatalities:
Total fatalities:
3
Circumstances:
En route, the single engine airplane went out of control and crashed on the slope of a mountain located south of Tha Tham Bleung. The aircraft was destroyed and all three occupants were killed.

Crash of a Pilatus PC-6/C-H2 Turbo Porter in Cần Thơ: 6 killed

Date & Time: Mar 17, 1971
Operator:
Registration:
N393R
Survivors:
No
MSN:
598
YOM:
1966
Country:
Region:
Crew on board:
2
Crew fatalities:
Pax on board:
4
Pax fatalities:
Other fatalities:
Total fatalities:
6
Circumstances:
Approaching Cần Thơ Airport from the north, the pilot of the Porter requested permission to land and was on VHF frequency. At the same time, a crew of two on board a Bell AH-1G Cobra registered 67-15676 was given permission to takeoff. While climbing, the helicopter struck the Porter, causing both airplanes to crash. All eight occupants were killed.

Crash of a Pilatus PC-6/C-H2 Turbo Porter in Long Tieng: 13 killed

Date & Time: Aug 19, 1969 at 1700 LT
Operator:
Registration:
N196X
Flight Phase:
Survivors:
No
Schedule:
Long Tieng - Sam Thong
MSN:
596
YOM:
1966
Country:
Region:
Crew on board:
1
Crew fatalities:
Pax on board:
12
Pax fatalities:
Other fatalities:
Total fatalities:
13
Captain / Total flying hours:
5874
Captain / Total hours on type:
2242.00
Circumstances:
The single engine airplane departed Long Tieng Airfield at 1655LT on a special flight to Sam Thong under the provisions of contract no. AID-439-342. Five minutes later, during an en route climb, the aircraft was observed to perform an erratic
maneuver for the nature of flight involved and crashed into a hillside. All 12 passengers, Laotian citizens, and the pilot Cpt Ralph S. Davis, were killed. The aircraft was destroyed by impact forces and a post crash fire.
Probable cause:
It was determined that the probable cause of this accident was the fatal wounding of the pilot by a bullet fired from a source outside the aircraft resulting in the loss of control.
Final Report: