United States Air Force - USAF (since 1947)

The aircraft and its crew were taking part in an air exercise intended to ascertain the feasibility of operations against the Soviet Union in wintertime. Seven hours into the planned 24-hour flight, and over the Northern Pacific Ocean, three of the giant bomber's six engines caught fire owing to carburetor icing in the intense cold and had to be shut down. The three remaining engines were only producing limited power and the plane could not maintain height. The Mark IV atomic bomb being carried was jettisoned at 8,000 feet inside Canadian waters, and its high explosive detonator created a large shock wave that was visible on the surface. A dummy core was inserted in the bomb before it was dropped, so there was no nuclear explosion. To give his crew a chance of survival the captain took the B-36 to Princess Royal Island where the 16 crew members and one observer bailed out. 12 of the 17 survived their ordeal, but the first 4 to jump were never found, and are presumed to have descended into the freezing sea and died. Capt. Schreier's body was recovered from the crash site in the summer of 1954. The aircraft flew on for another 210 miles with Capt. Schreier at the controls before crashing on the side of Mount Kologet, in British Columbia, 6,000 feet above sea level and northwest of Hazelton. The resting place of 44-92075 went unknown until September 1953 when the wreckage was sighted during an unrelated air search.
Crew killed were:
Cpt Theodore F. Schreier, copilot,
Cpt William Phillips, navigator,
1st Lt Holiel Ascol, bombardier,
S/Sgt Neal A. Straley, gunner,
S/Sgt Elbert W. Pollard, gunner.
Source: ASN

After touchdown, the aircraft went out of control, veered off runway and came to rest in flames. There were no casualties but the aircraft was destroyed.

Crashed in unknown circumstances 7 miles northeast of Raynesford, killing all three crew members.

The aircraft and its crew were involved in a SAR mission after a USAF C-54 was missing in the region of Snag, Yukon, since last January 26. En route, the crew encountered poor weather conditions with low clouds and while flying near a mountain slope, the aircraft was caught by downdrafts and crashed on a snowy and rocky ground. All 10 occupants were rescued while the aircraft was damaged beyond repair and abandoned on site.
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Shortly after takeoff from Roosevelt Roads NAS, while climbing, the aircraft went out of control and crashed into the sea about 7 km off shore. All three crew members were killed.

The aircraft was returning to Selfridge AFB after taking part to a SAR mission following the USAF C-54 missing since January 26 over Yukon. Upon landing, an undercarriage failed. The aircraft slid on its belly and came to rest. There were no casualties.

Crashed in unknown circumstances some 8 km north of La Tinta, killing at least one crew member.

The crew was taking part to a SAR mission after a USAF C-54 was missing since January 26. En route, the pilot was forced to make an emergency landing for unknown reason. The aircraft crash landed 32 km southwest of Whitehorse and was damaged beyond repair. All six crew members were unhurt.

The four engine aircraft was performing a flight from Anchorage to Great Falls with a crew of eight and 36 passengers on board, among them two civilians, an entrepreneur and his son. Around 1400LT, while flying over the west part of Canada, not far from the US border, the crew informed ground about his position and confirmed that all was running smoothly. About nine minutes later, the aircraft crashed in unknown circumstances somewhere in the region of Snag, Yukon. SAR operations were conducted and considerable helps were deployed, without success. All operations were eventually suspended after few weeks as no trace of the aircraft nor the 44 occupants was ever found. Up to 2016, the wreckage has not been found.

After touchdown at Kodiak Airport, the four engine aircraft was unable to stop within the remaining distance. It overran and plunged into the St Paul Bay. The aircraft was damaged beyond repair and among the 28 occupants, six were injured.