Narrative:

I was vectoring aircraft X to the IAF for the RNAV 34L approach into pae and there was [aircraft Y] below him about 700 feet. I stopped aircraft X at 2;500 feet and cleared him for the approach. Aircraft X didn't want to descend until aircraft Y was clear. I reached out to pae tower to see if they were in communications with aircraft and luckily they were and were able to move aircraft east of final. This situation routinely happens and places aircraft in an unsafe altitude and either having to be vectored around or we have to take other evasive actions. We need a more controlled airspace around pae. With the increase in air carrier operations pae needs a class C or the class B for sea needs to be lowered to encompass around pae's class D.

Google
 

Original NASA ASRS Text

Title: S46 TRACON Controller reported an airborne conflict between an air carrier IFR aircraft on the RNAV 34L Approach to PAE airport and a VFR helicopter.

Narrative: I was vectoring Aircraft X to the IAF for the RNAV 34L approach into PAE and there was [Aircraft Y] below him about 700 feet. I stopped Aircraft X at 2;500 feet and cleared him for the approach. Aircraft X didn't want to descend until Aircraft Y was clear. I reached out to PAE Tower to see if they were in communications with aircraft and luckily they were and were able to move aircraft east of Final. This situation routinely happens and places aircraft in an unsafe altitude and either having to be vectored around or we have to take other evasive actions. We need a more controlled airspace around PAE. With the increase in air carrier operations PAE needs a Class C or the Class B for SEA needs to be lowered to encompass around PAE's Class D.

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.