P80 controller reported vectoring off course and delaying descent clearance for two aircraft on appr...

Attributes
ACN	1654974
Time
Date	201906
Local Time Of Day	1201-1800
Place
Locale Reference	P80.TRACON
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
Route In Use	Visual Approach
Flight Plan	IFR
Aircraft 2
Make Model Name	Military
Operating Under FAR Part	Part 91
Flight Phase	Descent
Flight Plan	IFR
Person 1
Function	Approach
Qualification	Air Traffic Control Fully Certified
Experience	Air Traffic Control Time Certified In Pos 1 (yrs) 3.5
Events
Anomaly	ATC Issue All Types Conflict Airborne Conflict Deviation - Procedural Published Material / Policy

Narrative:

Aircraft X and aircraft Y both had to be kept high and vectored away from unknown VFR traffic (aircraft Z; reported via ads-B). I attempted to transmit in the blind to aircraft Z; however; I received no response. The VFR traffic crossed the outer fixes of both the 28R/28L localizer at pdx at 2;700; unverified. The presence of this VFR traffic caused 2 aircraft to be kept high and vectored around during critical phase of flight while descending on approach to pdx.the class charlie airspace needs extensions to protect the final approach courses. The fact that VFR aircraft are legal to cross through localizers at conflicting altitudes without being in radio communication with ATC is dangerous. An extension [protecting] the localizer out to the outer marker; surface to 5;000; 3 miles lateral on either side would greatly improve safety.

Original NASA ASRS Text

Title: P80 Controller reported vectoring off course and delaying descent clearance for two aircraft on approach due to an unidentified VFR aircraft conflicting in the vicinity of the Initial Approach Fix.

Narrative: Aircraft X and Aircraft Y both had to be kept high and vectored away from unknown VFR traffic (Aircraft Z; reported via ADS-B). I attempted to transmit in the blind to Aircraft Z; however; I received no response. The VFR traffic crossed the outer fixes of both the 28R/28L localizer at PDX at 2;700; unverified. The presence of this VFR traffic caused 2 aircraft to be kept high and vectored around during critical phase of flight while descending on approach to PDX.The Class Charlie airspace needs extensions to protect the final approach courses. The fact that VFR aircraft are legal to cross through localizers at conflicting altitudes without being in radio communication with ATC is dangerous. An extension [protecting] the localizer out to the outer marker; surface to 5;000; 3 miles lateral on either side would greatly improve safety.

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 controller reported vectoring off course and delaying descent clearance for two aircraft on approach due to an unidentified VFR aircraft conflicting in the vicinity of the initial approach fix.