Ground collision

A ground collision (also known as a terrain collision, or simply GCOL) is a collision that occurs while an aircraft is taxiing to or from its runway. Ground collisions occur when an aircraft collides with another aircraft and/or structure on the runway.

Causal factors

lack of sufficient training for aviation staff
lack of sufficient signage and lighting
lack of space at various parts of the aircraft's pathway, especially the maneuvering area