Dash 8-400
Air Traffic Control Fully Certified
Air Traffic Control Time Certified In Pos 1 (yrs) 14
Situational Awareness; Workload; Communication Breakdown
ATC Issue All Types; Conflict Airborne Conflict; Deviation / Discrepancy - Procedural Published Material / Policy
Air Traffic Control Separated Traffic; Air Traffic Control Provided Assistance; Air Traffic Control Issued New Clearance; Air Traffic Control Issued Advisory / Alert
Procedure; Airspace Structure; Airport; Aircraft; Company Policy
I was working the final position on a VFR day. PDX was landing on Runways 10L/10R. There are always VFR targets everywhere crossing through final and zigzagging around our arrival traffic. About half the time the Mode C is indicating that they are low and even though we can't trust the Mode C when it's busy; we just call traffic and trust that the altitude is correct as there would be no way to vector around the hornet's nest of VFR targets flying through final's airspace. Sometimes the altitude is indicating that the 1200 squawking target will be a factor and we have to vector around it. This is a real safety concern. Today; however; there was a primary only target just outside the outer ring of the Class Charlie maneuvering right along the Runway 10 final. This target was a factor for at least 5 aircraft within a 15 to 20 minute period. I even had to cancel an approach clearance for one aircraft; as the primary target reversed course and flew back through final.These events are caused by the fact that no one seems to care that we are having close calls daily with VFR aircraft flying through the Runway 10 final. I have filed countless reports and it isn't doing anything. We need a Class Charlie extension or a Class Bravo airspace at PDX. The airspace needs to be protected much further out because we can't vector close in as per our noise ordinance rules. If that is impossible then there needs to be a VFR corridor at or below a certain altitude. Or you could change the HIO procedures and not allow VFR aircraft to enter or exit the Class Delta airspace from the north. There are several ways we can fix this problem; or at least make it better. But again; no one seems to care. Unfortunately someone or possibly hundreds of people are going to be killed once there is an inevitable mid-air collision. It's only a matter of time. Someone needs to do something.
P80 Approach Controller reported an unidentified VFR target not displaying a transponder created a conflict with several air carriers on final approach.