aviation accident: Bombardier, Inc. CL-600-2C10 near San Francisco (2008-01-14)
Probable cause: The company tug operator of the other airplane's failure to maintain clearance with this aircraft during the pushback process. Also causal was the ground controller's failure to alert the pilot of this aircraft and tug operator of the other airplane of the simultaneous pushback occurring from adjacent gates. Contributing to the accident was the company's pushback operation without the use of wing/tail walkers.