Air Traffic Control Fully Certified
Air Traffic Control Time Certified In Pos 1 (yrs) 17
Time Pressure; Workload
Conflict Ground Conflict; Critical; Deviation / Discrepancy - Procedural Clearance; Flight Deck / Cabin / Aircraft Event Illness / Injury
Flight Crew Took Evasive Action; Flight Crew Returned To Gate; General Physical Injury / Incapacitation
Airport; Procedure
I was told by the FLM (Front Line Manager) that Aircraft X was coming off gate XX and given appropriate taxi instructions by the CPCIT (Career Professional Controller In Training) I was training on OGC. The pilot reported that another aircraft cut them off at the last minute causing the pilot to take evasive action by slamming on brakes. This caused flight attendants in the aircraft to become injured. Due to the departure demand and number of aircraft taxiing around the airport (120 departures and approximately 90 arrivals) it is extremely difficult to make every single traffic call accurately. My CPCIT instructed the aircraft to taxi; and based on her judgment; the pilot had enough time to make it in front of the other aircraft. She did not think speed would be an issue with the other taxiing aircraft. The airlines could spread the departures out throughout the rush a bit more. The demand for 120 departures in 45 minutes is an extremely busy rush; and difficult for any controller to make every single traffic call and get it right every single time.
We pushed off gate XX in ZZZ tail South. We were instructed to taxi North on A. Ground control gave us no instructions to follow or give way to other aircraft. We visually cleared the area prior to taxiing. Almost immediately after we started moving Aircraft Y appeared from behind us and to our left on taxiway A (taxiing Northbound). I immediately called out the conflict and applied the brakes. A flight attendant was injured; so we returned to the gate without further incident.
ORD ATC and A320 flight crew reported that another aircraft cut them off during taxi; causing them to slam on the brakes; which injured a flight attendant.