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The following is the cockpit voice recorder (black box) transcript from the September 8, 1994 crash of USAir Flight 427 that took off from Chicago O'Hare airport intended for Palm Beach International in Florida with a stopover at Pittsburgh International. While on approach at an altitude of 6000 feet Flight 427 entered the wake turbulence of a Delta airlines flight that was 4.1 miles ahead of t...

This is the transcript of the cockpit voice recorder (also known as the black box) from the Space Shuttle Challenger which broke apart 73 seconds after lift off in Cape Canaveral, Florida on January 28, 1986. It shows what the shuttle crew said to mission control and to each other. A great deal of effort was made to match the conversation to the exact second it happened both before lift off and...