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Canadian Pacific Air Lines Flight 21
	A Canadian Pacific Air Lines Douglas DC-6 similar to the accident aircraft
Occurrence
Date	July 8, 1965
Summary	Explosion of a device
Site	32 km (20 mi; 17 nmi) west of 100 Mile House, British Columbia.; 51°35′46″N 121°45′49″W / 51.59611°N 121.76361°W
Aircraft
Aircraft type	Douglas DC-6B
Operator	Canadian Pacific Air Lines
Registration	CF-CUQ
Flight origin	Vancouver International Airport, British Columbia, Canada
Destination	Whitehorse International Airport, Yukon, Canada
Passengers	46
Crew	6
Fatalities	52
Survivors	0

Canadian Pacific Air Lines Flight 21 was a scheduled domestic flight from Vancouver, British Columbia, Canada, to Whitehorse, Yukon, Canada, via Prince George, Fort St. John, Fort Nelson and Watson Lake on July 8, 1965. The Douglas DC-6B plane crashed near 100 Mile House, British Columbia, taking the lives of all 52 aboard.^[1]^[2] An inquest determined that the explosion was the result of a bomb, but the crime remains unsolved.^[1]

Incident

While en route from Vancouver to Prince George the DC-6 Empress of City of Buenos Aires, piloted by captain John Alfred Steele (41), first officer Warner Murray Wells (29), flight engineer Stanley Edward Clarke (26) crashed after passing Ashcroft, British Columbia. About 15:40, three mayday calls were heard by air traffic control in Vancouver. An explosion had occurred in the left aft lavatory. The tail separated from the fuselage. The aircraft spiralled and crashed into a wooded area. All 46 passengers and 6 crew perished.^[2] The crash site is 40 km (25 mi) west of 100 Mile House.^[1] Remnants of the DC-6 remain at the crash site near Dog Creek.^[3]

Aftermath

A coroner's inquest concluded "an explosive substance foreign to the normal contents of the aircraft" caused the crash. A witness on the ground saw the tail of the aircraft separate from the fuselage and debris trail out behind the aircraft. The debris turned out to be the bodies of passengers forced out by the depressurization of the aircraft. The fuselage was consumed by fire where it fell, but the tail, found 500 metres away, was not. Rescue crews reached the crash site while the fire continued to burn but no survivors were found. Crash investigators found traces of acid that led them to believe a bomb in the lavatory was involved. Traces of potassium nitrate and carbon, consistent with a "low-velocity explosion" were found. Gunpowder or stumping powder causes a low-velocity explosion. The explosion damaged bulkheads in the lavatory, severed pipes in the tail and tore a metre-wide hole in the side of the fuselage. The Royal Canadian Mounted Police investigation focused on four passengers although none was a suspect. No one claimed responsibility and no charges were ever laid. The source of the explosion remains unknown.^[1]

2018 investigation

The crash was re-examined by experts during six episodes of the second season of the CBC true crime podcast Uncover.^[4]

References

^ ^a ^b ^c ^d McMartin, Pete (July 7, 1995). "The day the sky exploded: 52 people plunged to their deaths on July 8, 1965, and nobody knows why it happened". The Vancouver Sun. pp. B.3.
^ ^a ^b Criminal Occurrence description at the Aviation Safety Network. Retrieved on July 25, 2008.
^ Foy, Julia; Meiszner, Peter (August 30, 2013). "Crash of Flight 21 near 100 Mile House almost 50 years ago still a mystery". Global News. Retrieved August 8, 2023.
^ "Uncover Podcast, CBC". cbc.ca. CBC. Retrieved November 13, 2018.