TRACON controller reported an air carrier on short final received a TCAS/RA and initiated a go-aroun...

Attributes
ACN	1495148
Time
Date	201711
Local Time Of Day	0601-1200
Place
Locale Reference	SCT.TRACON
State Reference	CA
Environment
Flight Conditions	VMC
Aircraft 1
Make Model Name	Large Transport Low Wing 2 Turbojet Eng
Operating Under FAR Part	Part 121
Flight Phase	Final Approach
Route In Use	Other Instrument Approach
Flight Plan	IFR
Aircraft 2
Make Model Name	Robinson R44
Flight Phase	Climb
Route In Use	None
Flight Plan	None
Person 1
Function	Local
Qualification	Air Traffic Control Fully Certified
Experience	Air Traffic Control Time Certified In Pos 1 (yrs) 6
Events
Anomaly	ATC Issue All Types Conflict Airborne Conflict Deviation - Procedural Published Material / Policy

Narrative:

Aircraft X was on final approach landing lgb. Unknown VFR traffic was transitioning through lgb class delta climbed to 1500 feet opposite direction just north of the final approach course. I issued a traffic alert to aircraft X who promptly reported the traffic in sight. A mile later; they reported that they were responding to a TCAS/RA climbed to 3000 feet and were sent around. The VFR target later went through sna airspace and I had them issue the brasher. The lgb tower controller was talking to the unknown VFR target but let them fly opposite direction in close proximity to the final approach course. They called traffic but let the targets converge and terminated communication with the VFR aircraft instead of giving them a frequency or ensuring that he would not be a factor. Lgb needs a class C airspace or at least better VFR departure procedures.

Original NASA ASRS Text

Title: TRACON Controller reported an air carrier on short final received a TCAS/RA and initiated a go-around for a VFR aircraft flying on the final approach course.

Narrative: Aircraft X was on final approach landing LGB. Unknown VFR traffic was transitioning through LGB Class Delta climbed to 1500 feet opposite direction just north of the final approach course. I issued a traffic alert to Aircraft X who promptly reported the traffic in sight. A mile later; they reported that they were responding to a TCAS/RA climbed to 3000 feet and were sent around. The VFR target later went through SNA airspace and I had them issue the brasher. The LGB Tower Controller was talking to the unknown VFR target but let them fly opposite direction in close proximity to the final approach course. They called traffic but let the targets converge and terminated communication with the VFR aircraft instead of giving them a frequency or ensuring that he would not be a factor. LGB needs a Class C Airspace or at least better VFR departure procedures.

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.

TRACON controller reported an air carrier on short final received a TCAS/RA and initiated a go-around for a VFR aircraft flying on the final approach course.