Crash of a Douglas C-47A-30-DL in Miles City: 5 killed

Date & Time: Mar 12, 1964 at 2050 LT
Operator:
Registration:
N61442
Survivors:
No
Schedule:
Billings – Miles City – Glendive – Sydney
MSN:
9642
YOM:
1943
Flight number:
FL032
Crew on board:
3
Crew fatalities:
Pax on board:
2
Pax fatalities:
Other fatalities:
Total fatalities:
5
Captain / Total flying hours:
15335
Captain / Total hours on type:
12830.00
Copilot / Total flying hours:
3539
Copilot / Total hours on type:
1355
Aircraft flight hours:
30442
Circumstances:
Frontier Airlines Flight 32 of March 12, 1964, crashed and burned during an instrument approach to the Miles City Airport, Miles City, Montana, about 2050 m.s.t. All five occupants, three crew members and two passengers were killed, and the aircraft was destroyed. Weather conditions last reported to the flight were the operational minima of ceiling 400 feet and visibility one mile. Wet snow, strong gusty winds, and near freezing temperatures prevailed. Investigation revealed neither malfunctioning of any of the aircraft's components nor of any of the pertinent airport navigational facilities including the VOR, which was utilized. All applicable FAA certification was in order.
Probable cause:
The Board determines that the probable cause of this accident was the descent below obstructing terrain, for reasons undeterminable, during an instrument approach in adverse weather conditions.
Final Report:

Crash of a Curtiss C-46F-1-CU Commando near Malmstrom AFB: 1 killed

Date & Time: Aug 14, 1963 at 1500 LT
Type of aircraft:
Operator:
Registration:
N67941
Flight Phase:
Flight Type:
Survivors:
Yes
Schedule:
Malmstrom - Ellsworth
MSN:
22391
YOM:
1945
Flight number:
AAX1814
Crew on board:
2
Crew fatalities:
Pax on board:
0
Pax fatalities:
Other fatalities:
Total fatalities:
1
Captain / Total flying hours:
15834
Captain / Total hours on type:
5807.00
Copilot / Total flying hours:
13606
Copilot / Total hours on type:
113
Aircraft flight hours:
25571
Circumstances:
An AAXICO Airlines, Inc., C-46-F, N 67941, a cargo flight, crash landed in a plowed field and skidded into a small earthen dam approximately 35 miles eastnortheast of Malmstrom Air Force Base, Great Falls, Montana, at approximately 1500 m.s.t., on August 14, 1963. The crash occurred after the pilot failed to maintain altitude and appropriate single-engine airspeed following the shut-down of the right engine. The first officer sustained fatal injuries; the captain sustained serious injuries, and the aircraft was substantially damaged. There was no fire.
Probable cause:
The Board determines the probable cause of this accident was the failure of the captain to effect a proper and timely assessment of a powerplant malfunction, followed by improper judgement and technique during a single-engine emergency operation.
Final Report:

Crash of a Douglas C-47A-75-DL Skytrain near Helena: 6 killed

Date & Time: Jan 26, 1962 at 1530 LT
Operator:
Registration:
42-100861
Flight Phase:
Flight Type:
Survivors:
No
Site:
Schedule:
Helena – Cut Bank
MSN:
19324
YOM:
1943
Crew on board:
3
Crew fatalities:
Pax on board:
3
Pax fatalities:
Other fatalities:
Total fatalities:
6
Circumstances:
On behalf of the Montana Air National Guard, the aircraft departed Helena Airport bound for Cut Bank, carrying a crew of three and three members of the Montana Government who were en route to a speaking engagement. Weather conditions worsened and the crew encountered heavy winds and snow falls. Control was lost and the airplane crashed in the Wolf Creek Canyon located about 25 miles north of Helena. The aircraft was destroyed and all six occupants were killed.
Crew:
Maj Clifford Hanson, pilot,
Maj Joseph Devine, copilot,
M/Sgt Charles Ballard, mechanic.
Passengers:
Donald Grant Nutter, Governor of Montana,
Dennis Gordon, executive secretary,
Edward Wren, commissioner of agriculture.
Probable cause:
Winds exceeding 100 mph sheared off one of the wings of the plane, causing it to crash in Wolf Creek Canyon north of Helena.

Crash of a Douglas C-54A-10-DC Skymaster near Missoula: 12 killed

Date & Time: Oct 28, 1960 at 1139 LT
Type of aircraft:
Operator:
Registration:
N48762
Survivors:
No
Site:
Schedule:
Portland – Yakima – Spokane – Missoula
MSN:
10320
YOM:
1944
Flight number:
NW104
Crew on board:
4
Crew fatalities:
Pax on board:
8
Pax fatalities:
Other fatalities:
Total fatalities:
12
Captain / Total flying hours:
11620
Captain / Total hours on type:
8070.00
Copilot / Total flying hours:
3221
Copilot / Total hours on type:
446
Aircraft flight hours:
36842
Circumstances:
On October 28, 1960, at 1139 m. s. t., a Douglas C-54A-DC, N 48762, operated by Northwest Airlines, Inc., as Flight 104, crashed and burned approximately 13 nautical miles northwest of the Missoula, Montana Airport. The captain, first officer, two hostesses and all eight passengers died in the crash. The flight took off from Spokane, Washington, on an instrument flight plan. En route radio reports were routine and indicated the flight was on schedule, and in no difficulty. The aircraft was observed from the ground flying on course toward Missoula in and along the Clark Fork Valley within six nautical miles west of the scene of the crash. The engines were running and the aircraft was descending as if on an approach to a landing. As the aircraft descended deeper into the valley, flight visibility became restricted by light snow showers, and the tops of the mountains surrounding the valley were obscured by the overcast. The aircraft entered a steep left banking turn and the nose was raised in an apparent attempt to turn and climb out through an intersecting valley; however, the aircraft continued to sink toward the ground, rolled to the left and crashed inverted. The Board believes the accident was caused by the failure of the pilot to continue in accordance with his IFR flight plan by attempting a VFR approach during instrument weather conditions.
Probable cause:
The probable cause of this accident was the failure of the pilot to continue in accordance with his IFR flight plan by attempting a VFR approach during instrument weather conditions.
Final Report:

Crash of a Ford 4 in Townsend

Date & Time: Jun 19, 1956
Type of aircraft:
Operator:
Registration:
N9642
Flight Phase:
Survivors:
Yes
Schedule:
Townsend - Townsend
MSN:
4-AT-058
YOM:
1929
Crew on board:
2
Crew fatalities:
Pax on board:
0
Pax fatalities:
Other fatalities:
Total fatalities:
0
Circumstances:
The crew was performing a crop spraying mission at Townsend, Montana. While flying at low height, the left engine lost power and eventually detached. The crew elected to make an emergency landing but the aircraft crashed. Both occupants were slightly injured while the airplane was written off.
Probable cause:
Loss of power on left engine which detached in flight.

Crash of a Curtiss C-46F-1-CU Commando in Miles City

Date & Time: Sep 22, 1953 at 1430 LT
Type of aircraft:
Registration:
N1673M
Survivors:
Yes
Schedule:
Seattle – Miles City – Baltimore – Boston
MSN:
22460
YOM:
1945
Crew on board:
7
Crew fatalities:
Pax on board:
37
Pax fatalities:
Other fatalities:
Total fatalities:
0
Circumstances:
The airplane was completing a special flight from Seattle to Boston, carrying 37 Korean War veterans and a crew of seven. Shortly after takeoff from Miles City Airport, the right engine caught fire. The crew decided to return for a safe landing but the captain realized he could not make it so he reduced his altitude and made a belly landing in a field located few miles from the airport. The aircraft came to rest in flames, and while all 44 occupants were evacuated safely, the aircraft was totally consumed by fire.
Probable cause:
The right engine caught fire shortly after takeoff.

Crash of a Ford 5 near Kalispell

Date & Time: Aug 17, 1953
Type of aircraft:
Operator:
Registration:
N69905
Flight Phase:
Survivors:
Yes
Schedule:
Spotted Bear - Spotted Bear
MSN:
5-AT-040
YOM:
9
Crew on board:
1
Crew fatalities:
Pax on board:
6
Pax fatalities:
Other fatalities:
Total fatalities:
0
Circumstances:
The three engine aircraft left Spotted Bear-US Forest Service Airport with a pilot and six smoke jumpers on board. While flying at low height over the Flathead Indian Reserve located south of Kalispell, the aircraft suffered a simultaneous failure of all three engines. It stalled and crashed in a wooded area. All seven occupants were injured while the aircraft was damaged beyond repair.
Probable cause:
Failure of all three engines in flight.

Crash of a Ford 4 in Basin: 2 killed

Date & Time: Jul 14, 1953 at 1730 LT
Type of aircraft:
Operator:
Registration:
N8400
Flight Phase:
Survivors:
No
MSN:
4-AT-062
YOM:
13
Location:
Crew on board:
2
Crew fatalities:
Pax on board:
0
Pax fatalities:
Other fatalities:
Total fatalities:
2
Circumstances:
The crew was completing a crop spraying mission against spruce bud worms. While flying at low height, the three engine aircraft hit power cable and crashed in a field. Both crew members were killed.

Crash of a Ford 5 in Choteau

Date & Time: May 6, 1953
Type of aircraft:
Registration:
N9606
Flight Phase:
Survivors:
Yes
Schedule:
Choteau - Choteau
MSN:
5-AT-004
YOM:
24
Location:
Crew on board:
2
Crew fatalities:
Pax on board:
0
Pax fatalities:
Other fatalities:
Total fatalities:
0
Circumstances:
The crew was engaged in a local spraying mission. During the takeoff roll, the crew encountered strong crosswinds. The three engine aircraft went out of control, veered off runway and came to rest in flames against an embankment. Both pilots were rescued while the aircraft was destroyed.
Probable cause:
Loss of control during a takeoff attempted in strong crosswinds.

Crash of a Fairchild C-119C-25-FA Flying Boxcar near Billings: 8 killed

Date & Time: Nov 17, 1952 at 1430 LT
Operator:
Registration:
51-2590
Flight Phase:
Flight Type:
Survivors:
Yes
Schedule:
Edmonton – Denver
MSN:
10579
YOM:
1951
Crew on board:
2
Crew fatalities:
Pax on board:
14
Pax fatalities:
Other fatalities:
Total fatalities:
8
Circumstances:
While cruising at an altitude of 9,000 feet on a flight from Edmonton to Denver, the crew encountered technical problems with the left engine. A propeller blade detached and hit the fuselage. Shortly later, the engine suffered severe vibrations and later detached from its mount. In such conditions, the crew decided to reduce his altitude and attempted an emergency landing. The aircraft crash landed in a field located 12 miles east of Billings, hit a ditch and came to rest in flames. Eight occupants were killed while eight others were injured.
Probable cause:
Loss of a propeller blade in flight and the left engine later detached due to severe vibrations.