PA-23-250 Aztec
Air Traffic Control Fully Certified
Air Traffic Control Time Certified In Pos 1 (yrs) 1
Situational Awareness; Workload
ATC Issue All Types; Deviation / Discrepancy - Procedural Published Material / Policy; Inflight Event / Encounter CFTT / CFIT
Air Traffic Control Issued New Clearance
Airspace Structure; Human Factors
Aircraft X departed CID after completing practice IFR approach; while working departure radar ID-ed them and asked intentions. Aircraft X wanted to depart CID and fly back to ALO IFR; I asked requested altitude and they requested 3;000 feet. I put Aircraft X on course to ALO and 3;000 feet. Workload increased exponentially due to Oshkosh overflights and standard IFR arrivals/ departures. At time of this event easily 10+ on a single scope at a time all requesting different things due to low ceilings and traffic. Aircraft X was enroute to ALO which has an MVA of 3;400 feet in his flight path. I noticed his exact flight path led him east of the MVA at 3;400 feet; and by the time he reached about 3 miles from the MVA; I issued a climb to 4;000 feet to keep him at a safe altitude. He went slightly inside the 3 mile mark under MVA altitude but above obstruction altitude; and made the climb past 3;400 feet by the time he was 90 degrees away from the obstruction and flying away from it. No accidents or further developments occurred; higher workload than standard due to Oshkosh event traffic funneling in. Nothing to recommend; higher than average workload with several abnormal request led to not seeing the issue before it happened.
CID Controller reported a PA27 entering a higher Minimum Vectoring Altitude.