Date: July 05, 1970
Location: Toronto, Canada
Aircraft: McDonnell Douglas DC-8-63
Airline: Air Canada
Flight No: 621
Fatalities: 109 : 109

This Air Canada DC-8 exploded and crashed after the co-pilot inadvertently deployed the spoilers at a height of 60 feet over the runway while the captain attempting to land.  The plane landed hard on the runway and the impact caused the No.4 engine to break away.  During the attempted go-around, the plane lost the No. 3 engine, went into a dive and crashed killing all 109 people.