How Distrust Killed 109 People | Air Canada Flight 621

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This is the story of air canada flight 621, On the 5th of july 1970 an air canada DC 8, was on the ground at montreal and it was bound for los angeles with a stop over in toronto. The plane took off from Montreal at about 7:12 am EDT bound for Toronto, the flight was all but normal. Soon they were getting close to toronto and the pilots started working on the in range checklist, Which was followed by the before landing checklist. The before landing checklist walked the pilots through setting the plane up for a smooth transition to the approach phase, They completed the checklist and the plane turned to line up with runway 32 at toronto international airport.

The plane flew into the airport, it slowly lost altitude as the huge DC8 descended from the sky onto the runway. When the plane was about 60 feet from the runway the captain said okay to the first officer and the plane suddenly started to drop. The captain exclaimed as the plane dropped and the captain increased power to stop the sinking plane, the captain pulled back on the stick hard as he could, the safety of the plane depended on it. The first officer was profusely apologizing to the captain, he kept on saying “sorry pete”. His apologies were in vain. the captain couldnt stop the plane, the plane kept sinking and it hit the runway very hard. The plane wasnt on the ground very long, half a second maybe and then the plane was in the air again. The controller chimed in with “Air Canada 621. Check you on the overshoot and you can contact departure on 199 or do you wish to come in for a mile on 5 right” the captain said that they were going around, and that they were alright, but they weren't, the rightmost engine struck the runway and it was ripped from the wing. When the engine was torn away it damaged the wing of the plane. Fuel leaked through this hole and soon the wing was on fire.

But the crew thought that the plane was in better shape, they decided to circle the airport and to come in for another approach onto runway 32, the plane climbed to 3000 feet for attempt number 2. As the plane flew smoke trailed it and 2 and a half minutes after the touchdown an explosion rocked the plane. Parts of the right hand wind rained down on the ground below. Another explosion ripped off engine number three. things were bad. A fourth explosion sent more chunks of the wing raining down. The plane then entered a right bank and the right hand wing started to disintegrate, Flight 621 was no longer controllable. The plane hit the ground at 220 knots and none of the 109 people onboard survived.

The runway was littered with debris and finding out what happened started there, the plane touched down so hard that it literally ripped engine number 4 off of its mounts. Airplane landings are usually very smooth. You'd think that tons of metal touching back down at tremendous speeds would be a violent affair but more often than not it's controlled and benign. This is because of what's known as a flare. A flare occurs right before touching down, the pilot pulls the nose up and reduces the rate of descent so that the plane touches down smoothly. That didnt happen here.

Listening to the CVR or the cockpit voice recorder would tell them why. Listening to the pilots it seemed like any other flight, the pilots were talking about the approach, completing checklists etc. But when they got to the before landing checklist the investigators noticed something strange, the pilots skipped the spoiler part of the checklist. So whats a spoiler and what does it do. If you've ever sat in the seat overlooking the wing on any modern airliner youve probably

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