Medium Large Transport
Situational Awareness; Distraction; Confusion; Communication Breakdown; Training / Qualification
Conflict Ground Conflict; Less Severe; Deviation / Discrepancy - Procedural Clearance; Deviation / Discrepancy - Procedural Published Material / Policy
Human Factors; Procedure
At the time of the following incident; [reporter] was training [a trainee] on the North Ramp Control Position.Outbound flight Aircraft X was holding short of Alpha and Romeo Hotel from the ramp. Upon notification that Aircraft X was ready to taxi; [trainee] provided control instructions to Aircraft X to taxi via Bravo; hold short of Kilo; and contact ground. Shortly after instructions were provided; inbound flight Aircraft Y taxied on Alpha; through Romeo Hotel; without being provided instructions to taxi to its gate; by a ramp controller. Before taxiing; outbound flight Aircraft X's pilots noticed that the inbound flight; Aircraft Y; was not going to give way; because of this; the pilots of Aircraft X waited to taxi until Aircraft Y was clear of the intersection.Without the situational awareness of Aircraft X's pilots; the two aircraft could have made contact. Upon parking into gate; the pilots of Aircraft Y were advised that they need to contact ramp control prior to Kilo by [reporter] and were provided the telephone number of Ramp Control.
A ramp controller reported observing a conflict where one aircraft was given instructions to taxi; while another aircraft was not. The aircraft would have been a major conflict if one of the pilots did not wait for the other aircraft to move without instructions.