Small Aircraft
Air Traffic Control Fully Certified
Air Traffic Control Time Certified In Pos 1 (yrs) 5
Situational Awareness
ATC Issue All Types; Conflict Airborne Conflict; Deviation / Discrepancy - Procedural Published Material / Policy
Air Traffic Control Issued Advisory / Alert; Air Traffic Control Provided Assistance; Flight Crew Executed Go Around / Missed Approach
ATC Equipment / Nav Facility / Buildings; Airport; Environment - Non Weather Related
Aircraft X was IFR and requested the RNAV [Runway] 35 approach into CVO airport. I cleared them for the approach and advised them of traffic - multiple targets in the vicinity of CVO indicating 040 and below. There were probably about 10 VFR targets in the vicinity of CVO; all squawking 1200 not receiving ATC services. Several of the VFR targets were maneuvering near the IAFs for approaches into EUG Runways 16R and 16L; which could have easily caused more problems for arrivals into EUG if they had come then. I switched Aircraft X to advisory frequency at least 10 NM south of the airport. My focus then switched to other traffic I was working. After a few minutes; Aircraft X returned to my frequency to report that they were flying west to avoid traffic. They were not flying the published missed approach due to multiple other aircraft in that path. I also had to immediately issue a traffic alert to other traffic near them. They were flying on an IFR plan and maneuvering on their own below the MVA to avoid multiple other aircraft. Once they were above the MVA I vectored them further away from traffic.From what I could tell; there was not any orderly flow of the VFR traffic at CVO.CVO airport needs to have an air traffic control tower. There is too much VFR aircraft flying disorderly on their own in that vicinity; many of them student pilots and foreign; but also mixed with air taxis and jets; as well as regular aerobatic activity. This is just one example of pilots not being able to sequence themselves and pilots needing to take evasive action.Also; EUG should be upgraded to a Class C in order to require VFR aircraft flying at dangerous altitudes in the approach path of EUG to talk to ATC.
Eugene TRACON Controller reported an unsafe operation with numerous VFR aircraft at the CVO uncontrolled airport.