Royal Canadian Air Force - RCAF

On a flight from Vancouver to San Diego, the four engine aircraft crashed on the Iron Mountain located in the Syskiyou Mountain Range, southern Oregon. All ten crew members were killed.
Crew:
F/O Joseph Yvon Aurele Elias Bourgeois,
F/O John William Brownie,
F/O Robert James Calder,
F/O David Fair Lancaster Ellis,
F/O Kenneth Edgar Elsden,
LAC John Haraldson,
F/O Harry Charles Maddick,
Cpl Donald Gordon Lancaster Spence,
F/O Cyril Jerome Lancaster Williams,
LAC William Henry Waldron.

Crashed in unknown circumstances while returning to Greenwood Airbase following a reconnaissance mission. Six of the seven crew members were killed.
Crew:
F/O Eric Travers Lewis, †
F/O Douglas Alan Hamilton, †
F/O John Dane Curzon, †
Sgt Neil McCarrol, †
LAC William Douglas Fifield, †
AC1 George Patrick Sylvester Shoul, †
F/O K. Benson.

Crashed in unknown circumstances few minutes after its takeoff from Goose Bay. SAR operations were conducted but eventually abandoned after few days as no trace of the aircraft nor the crew was found. The wreckage was eventually found in a remote area on June 23, 1953.

While flying northeast of Vancouver, the twin engine aircraft hit a snowy mountain slope located near Widgeon Lake, west of Pitt Lake. Debris were found few days later and all five crewmen were killed.
Crew:
Flying Officer Murray Donald Hill,
Flying Officer Jack Wayne McIntosh,
Flying Officer Ernest Dorph Thygesen, 2.

During an instrument approach to Comox Airbase, while flying in poor weather conditions, the aircraft went out of control and crashed in a swampy area. All seven passengers were killed while both pilots were injured. It was later confirmed by the RCAF that the Lancaster was scheduled on this flight to replace a Canso that suffered an engine failure earlier that day.
Crew:
F/O Ruff F. Johnson, pilot,
F/O Monte J. Wright, copilot,
F/O Joseph Frederick Doucette, navigator, †
Cpl George Stanley Fletcher, flight engineer. †
Passengers:
F/Sgt Joseph Leo Laurier Maynard, †
A1c Vernon Joseph McIntyre, †
Cpl Freeman Archibald McKay, †
A1c Wayne Frederick Smith, †
A1c Roy Howard Walsh, †
Malcolm G. McLeod. †

The twin engine aircraft departed Saskatoon that day with two other similar airplanes for a training mission on behalf of the 1st RCAF Advanced Training School. On board were three crew members, one instructor and two student pilots. While flying at a very low height, the aircraft struck the water surface and crashed in the Redberry Lake, about 65 km northwest of Saskatoon Airport. The plane was totally submerged and just one of the airmen had managed to swim to a sandbar. Both other pilots remained in the cabin and were killed. The plane was eventually located and brought to shore where it was trucked away for investigation. It is believed that a propeller(s) came in contact with the lake surface.

Crashed in unknown circumstances at Montreal-Saint-Hubert Airport. The crew fate remains unknown.

The crew was completing a local training mission in the region of Bagotville when the four engine aircraft collided with a RCAF De Havilland DH.100 Vampire registered 170024 and carrying one pilot. Out of control, both aircraft dove into the ground and crashed in a prairie in Bagotville. All seven crew members were killed. The Vampire's pilot F/Lt Charles Stewart Buchanan was performing a training sortie between Chicoutimi and Quebec City.
Crew:
F/O Robert Alexander Gray, pilot,
F/O Joseph Alfred Marier, copilot,
F/O Edward Charles William Hutt,
F/O Richard Heather Duffield Noble, navigator,
F/O James Ernest Macara, radio operator,
Cpl Robert Gerald Smith, flight engineer.

Crashed in unknown circumstances while approaching Goose Bay Airport, killing both pilots.
Crew:
F/L Ralph G. Raho,
F/L Jean-Pierre Bourleau.

Crashed in unknown circumstances in Frobisher Bay, NWT (now Iqaluit, Nunavut).