Small Aircraft; Low Wing; 2 Eng; Retractable Gear
Air Traffic Control Fully Certified
ATC Issue All Types; Deviation / Discrepancy - Procedural Published Material / Policy; Inflight Event / Encounter CFTT / CFIT
Air Traffic Control Issued New Clearance; Flight Crew Executed Go Around / Missed Approach
Human Factors; Procedure
I was working TCIC [Tower Controller in Charge]. Aircraft X was on a GPS/RNAV Runway 20L approach. On short final; the Local Controller (LC) had to send Aircraft X around for a previous arrival that was still on the runway executing a touch-and-go. Aircraft X was instructed to go around and offset to the left. Aircraft X was subsequently instructed to turn left crosswind for left traffic to Runway 20L at approximately 010 MSL. The pilot complied and was cleared to land on Runway 20L. Shortly later I realized Aircraft X had been IFR on an IFR approach and did not request to cancel IFR or remain in the pattern for a Visual Approach. He was not given the option for an IFR missed approach and therefore issued a turn below the MVA of 029 MSL. We handle many aircraft that fly both VFR and IFR depending on the day. The LC and I should have been more vigilant when issuing him go-around instructions.
Tower Controller In Charge reported not realizing an aircraft was on a IFR clearance and observed the Local Controller use improper procedures resulting in the aircraft being below the Minimum Vectoring Altitude.