Air Traffic Control Fully Certified
Air Traffic Control Time Certified In Pos 1 (yrs) 15
Communication Breakdown; Training / Qualification
ATC Issue All Types; Conflict Ground Conflict; Critical; Flight Deck / Cabin / Aircraft Event Illness / Injury
Flight Crew Took Evasive Action
Human Factors; Aircraft
While providing training on outbound ground; the following event happened:Aircraft X was given taxi instructions to Runway 28R/N5 intersection departure. The session was extremely heavy/mostly difficult for the CPCIT Career Professional Controller In Training. After giving taxi instructions; the CPCIT moved on to other tasks that needed to be handled. After the session; the FLM told both the CPCIT and me that Aircraft X had to 'slam on the brakes' to avoid hitting another taxiing aircraft on an adjacent taxiway. When that happened; a flight attendant was injured; forcing the aircraft to return to the gate.After watching and listening to the replay; it is obvious that both the CPCIT and I missed a traffic call that should have been made to avoid the situation.While I cannot speak for the CPCIT; CPCIT may have thought that the aircraft established on the A taxiway would be blocked by that heavy jet; allowing the time needed to taxi Aircraft X off gate XWE. However; after viewing the replay; I do not believe this is the case. My focus was on things elsewhere on the airport when this aircraft was taxied; and I missed the instruction and traffic call.The only thing I can recommend that would have prevented this from happening is to ensure that my scan; as well as the CPCIT's scan is complete and through; and that any coordination between outbound ground and inbound ground is accomplished.I will continue to work on my abilities as a veteran Controller to maintain my scan; and pass those traits on to those who I train.
Tower Controller reported aircraft under their control had to slam on the brakes to avoid contact with another taxing aircraft; resulting in a Flight Attendant injury.