B777 Undifferentiated or Other Model
Air Traffic Control Fully Certified
Air Traffic Control Time Certified In Pos 1 (yrs) 6
Situational Awareness; Training / Qualification; Distraction; Workload; Communication Breakdown
ATC Issue All Types; Conflict Airborne Conflict; Deviation / Discrepancy - Procedural Clearance
Air Traffic Control Issued New Clearance; Air Traffic Control Separated Traffic; Flight Crew Requested ATC Assistance / Clarification
Human Factors
Aircraft X was climbing to 35;000 feet out of 26;000 feet saw traffic at 32;000 feet. Entered interim assigned altitude FL310 in flight data tag and combined up sectors but didn't follow through. I was training and we discussed it. The trainee said she would stop the flight; entered the interim altitude assigned FL310 and I didn't make sure she gave Aircraft X the new altitude. By the time we combined sectors and went back to controlling the trainee fell behind with a couple other clearances and didn't have time to turn Aircraft X once conflict alert went off.
After being cleared to 35;000 feet; we had a traffic alert passing 31;500 feet for Aircraft Y at 32;000 feet 10 miles ahead. We called ATC and they turned us 30 degrees right. ATC claimed that our cleared altitude was 31;000 feet even though we verified and read back 35;000 feet. We never got closer than 7 miles from traffic.
ZHU Center Controller Instructor and a flight crew reported that a Trainee Controller climbed the flight crew from 26;000 feet to 35;000 feet with conflicting converging traffic at 32;000 feet.