P80 TRACON controller cancelled an arrival's STAR and vectored the aircraft to avoid an unidentified...

Attributes
ACN	1486000
Time
Date	201710
Local Time Of Day	0001-0600
Place
Locale Reference	PDX.Airport
State Reference	OR
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Make Model Name	B737 Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Flight Phase	Descent Initial Approach
Flight Plan	IFR
Aircraft 2
Make Model Name	Any Unknown or Unlisted Aircraft Manufacturer
Flight Phase	Climb
Route In Use	None
Flight Plan	VFR
Person 1
Function	Approach
Qualification	Air Traffic Control Fully Certified
Experience	Air Traffic Control Time Certified In Pos 1 (yrs) 1
Events
Anomaly	ATC Issue All Types Conflict Airborne Conflict Deviation - Procedural Published Material / Policy

Narrative:

I was working [a B737] on the STAR. I had to take him off the arrival for an unidentified VFR primary target flying through the approach corridor. [The B737] was told of the traffic and didn't see it; so I based [the B737] to miss the primary target and the primary target decided to turn towards [the B737]. [The B737] was based high and close to breaking the noise restriction. [The B737] eventually saw the traffic and it was no factor.this is a daily problem and someone is going to eventually get hurt. There needs to be an airspace design change. VFR targets constantly fly through the approach corridor at bad altitudes that conflict with aircraft on final or turning base. Often they are primary targets with no transponders and high enough to be a major concern. This situation is very bad and nothing seems to be happening about it.

Original NASA ASRS Text

Title: P80 TRACON Controller cancelled an arrival's STAR and vectored the aircraft to avoid an unidentified VFR aircraft flying through the final approach course.

Narrative: I was working [a B737] on the STAR. I had to take him off the arrival for an unidentified VFR primary target flying through the approach corridor. [The B737] was told of the traffic and didn't see it; so I based [the B737] to miss the primary target and the primary target decided to turn towards [the B737]. [The B737] was based high and close to breaking the noise restriction. [The B737] eventually saw the traffic and it was no factor.This is a daily problem and someone is going to eventually get hurt. There needs to be an airspace design change. VFR targets constantly fly through the approach corridor at bad altitudes that conflict with aircraft on final or turning base. Often they are primary targets with no transponders and high enough to be a major concern. This situation is very bad and nothing seems to be happening about it.

Data retrieved from NASA's ASRS site and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.

P80 TRACON controller cancelled an arrival's STAR and vectored the aircraft to avoid an unidentified VFR aircraft flying through the final approach course.