Bonanza 35
Air Traffic Control Fully Certified
Air Traffic Control Time Certified In Pos 1 (yrs) 20
Human-Machine Interface; Distraction; Situational Awareness; Training / Qualification
ATC Issue All Types; Airspace Violation All Types; Deviation - Altitude Excursion From Assigned Altitude; Deviation / Discrepancy - Procedural Published Material / Policy; Deviation / Discrepancy - Procedural Clearance
Air Traffic Control Issued New Clearance; Flight Crew Requested ATC Assistance / Clarification; Flight Crew Became Reoriented
Human Factors; Procedure
I was training a Supervisor at the time the deviation occurred. The trainee was distracted with trying to get the correct call sign typed into a data tag whilst Aircraft X was climbing through his assigned altitude of 4;000 feet. The trainee saw the aircraft climbing but didn't think anything of it because they had gotten rid of the strip and thought they had switched the aircraft to the next facility already which would allow them to continue his climb. Strip marking did not show that they had frequency changed the aircraft. The pilot actually brought attention to the altitude when he asked if he was cleared to 8;000 feet. At this point Aircraft X was at approximately 5;200 feet. The trainee stated no; pointed him out to the affected facility and coordinated with the receiving facility to take the aircraft at 6;000 feet.
RDG Controller conducting on the job training observed an aircraft climbing through their assigned altitude which was not noticed by the Trainee.