Abstract: The disclosed embodiments relate to avoiding a collision between an aircraft and an obstacle when the aircraft is being moved on a ground surface via a ground vehicle. Sensors can be mounted in and/or on the aircraft. The sensors can detect obstacles located in proximity to the aircraft and can communicate information to a processor onboard the aircraft. When the processor determines that an obstacle is located in proximity to the aircraft, the processor generates a warning generator signal, which causes an apparatus to communicate a warning signal that is perceptible to an operator of the ground vehicle to warn the operator of the obstacle.