Air carrier had conflict with VFR aircraft in class B airspace.

Attributes
ACN	321765
Time
Date	199511
Day	Sun
Local Time Of Day	0601 To 1200
Place
Locale Reference	atc facility : slc
State Reference	UT
Altitude	msl bound lower : 6000 msl bound upper : 6000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : slc
Operator	common carrier : air carrier
Make Model Name	Commercial Fixed Wing
Operating Under FAR Part	Part 121
Flight Phase	cruise other
Route In Use	enroute : on vectors
Flight Plan	IFR
Aircraft 2
Operator	general aviation : personal
Make Model Name	Any Unknown or Unlisted Aircraft Manufacturer
Operating Under FAR Part	Part 91
Flight Phase	cruise other
Route In Use	enroute : direct
Flight Plan	VFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 180 flight time total : 15000 flight time type : 180
ASRS Report	321765
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : commercial pilot : instrument
Events
Anomaly	conflict : airborne less severe
Independent Detector	other flight crewa
Resolutory Action	none taken : anomaly accepted
Consequence	faa : reviewed incident with flight crew
Miss Distance	vertical : 500
Supplementary
Primary Problem	ATC Human Performance
Air Traffic Incident	other

Narrative:

Air carrier X was on a right downwind, for a visual approach to runway 16L. At slc a light aircraft was observed northwest of the airport, on a 090 degree heading. This aircraft passed under us, as we turned base. After landing, I telephoned the tower to find out why I wasn't notified of the traffic. They informed me that there is a VFR corridor, north of the airport, running e-w. They also said that several aircraft on final had to execute missed approachs due to TCASII 'RA' advisories. This is not a good area for a VFR corridor. The tower should be required to point out traffic before clearing an aircraft for a visual.

Original NASA ASRS Text

Title: ACR HAD CONFLICT WITH VFR ACFT IN CLASS B AIRSPACE.

Narrative: ACR X WAS ON A R DOWNWIND, FOR A VISUAL APCH TO RWY 16L. AT SLC A LIGHT ACFT WAS OBSERVED NW OF THE ARPT, ON A 090 DEG HDG. THIS ACFT PASSED UNDER US, AS WE TURNED BASE. AFTER LNDG, I TELEPHONED THE TWR TO FIND OUT WHY I WASN'T NOTIFIED OF THE TFC. THEY INFORMED ME THAT THERE IS A VFR CORRIDOR, N OF THE ARPT, RUNNING E-W. THEY ALSO SAID THAT SEVERAL ACFT ON FINAL HAD TO EXECUTE MISSED APCHS DUE TO TCASII 'RA' ADVISORIES. THIS IS NOT A GOOD AREA FOR A VFR CORRIDOR. THE TWR SHOULD BE REQUIRED TO POINT OUT TFC BEFORE CLRING AN ACFT FOR A VISUAL.

Data retrieved from NASA's ASRS site as of July 2007 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.