Trans-Canada Air Lines Flight 831
The crash site of Flight 831 | |
| Occurrence | |
|---|---|
| Date | November 29, 1963 |
| Summary | Unknown; possible systems failure |
| Site | Ste-Thérèse-de-Blainville (near Montreal-Dorval Airport), Quebec, Canada 45°40′53″N 73°53′54″W / 45.6813°N 73.8984°W |
| Aircraft | |
| The aircraft involved in the accident, pictured six months before accident | |
| Aircraft type | Douglas DC-8-54CF Jet Trader |
| Operator | Trans-Canada Air Lines |
| Call sign | TRANS-CANADA 831 |
| Registration | CF-TJN |
| Flight origin | Montreal-Dorval International Airport |
| Destination | Toronto International Airport |
| Occupants | 118 |
| Passengers | 111 |
| Crew | 7 |
| Fatalities | 118 |
| Survivors | 0 |
Trans-Canada Air Lines (TCA) Flight 831 was a flight from Montréal–Dorval International Airport to Toronto International Airport on November 29, 1963. About five minutes after takeoff in poor weather, the jet crashed about 32 km (20 mi) north of Montreal, near Ste-Thérèse-de-Blainville, Quebec, Canada, killing all 111 passengers and seven crew members. The crash was the deadliest in Canadian history at the time. It was also the deadliest crash of a DC-8 at the time, and, as of 2025, the sixth-deadliest.