B737 Undifferentiated or Other Model
Communication Breakdown; Situational Awareness
Ground Event / Encounter Object
Aircraft Aircraft Damaged; General Maintenance Action
Human Factors; Procedure
Damage incurred to left wingtip/scimitar; occurred during towing operations to the west satellite parking area. As the operator approached the lead in line; the wingtip made contact with the mobile stairs that were staged rampside. The marshaller attempted to halt progress of the tow; but the tractor operator did not observe the stop signal in a timely manner to avoid any damage to the aircraft.
Tug driver reported damage to the wingtip of an aircraft being towing due to contact with a set of mobile stairs.