I have just remembered a very disturbing sight I saw while playing golf on July the 5th 1970. The course was near the Toronto International Airport, I heard a noise in the sky that was different from what was normally heard and I looked up to see an Air Canada DC-8 (Flight #621) with one wing on fire. I later found out that it had hit the runway hard on landing and was doing a go-around, the pilot did not know that he had left an outboard engine on the runway. As I looked the plane began to turn and sections of the wing started to fall off and flutter down like large feathers, then the inboard engine dropped to the ground like a smoking bomb. The plane immediately went into a nose dive into the ground, 109 passengers and crew died that instant.
I put my clubs away and went home, to my disgust cars were streaming to the crash site, some with kids in the car. A description of the site later said parts of bodies and wreckage were seen hanging from trees. The local ice hockey rink was pressed into service as a temporary morgue.
Pilot error was the cause officially, he and the co-pilot disagreed as to when to arm the spoilers this led to the co-pilot deploying them too soon rather than arming them. They were later modified to automatically arm when the main landing gear reached a certain point of compression.
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