Establishing Perspective On July 1, 2002: Bakshirian Airlines Tupolov 154 collided with a DHL Cargo Boeing 757-200 over Southern Germany Sequence of events as the two aircraft converged: 1)Onboard collision system told Boeing to climb 2)Onboard collision system told Tupolov to descend 3)Air traffic control (ATC) told Tupolov to climb 4)Boeing climbed 5)Tupolov climbed 6)Collision occurred at 35,000 feet.
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