Narrative:

We were on final approach to runway 34 at slc, while a metroliner was on final to runway 35, unknown to us. We were visual, but lined up on the runway 34 localizer. TCASII showed an aircraft above and in front of us descending. Our TCASII gave us a 'climb, climb now,' RA just after we visually saw the metropolitan above us. The TCASII then gave us an immediate 'descend.' if we hadn't visually seen the metropolitan, our first TCASII RA would have caused us to climb into him. Tower never advised us they had traffic on final to runway 35.

Google
 

Original NASA ASRS Text

Title: NMAC SE OF SLC ON APCH TO RWY 34 AND RWY 35.

Narrative: WE WERE ON FINAL APCH TO RWY 34 AT SLC, WHILE A METROLINER WAS ON FINAL TO RWY 35, UNKNOWN TO US. WE WERE VISUAL, BUT LINED UP ON THE RWY 34 LOC. TCASII SHOWED AN ACFT ABOVE AND IN FRONT OF US DSNDING. OUR TCASII GAVE US A 'CLB, CLB NOW,' RA JUST AFTER WE VISUALLY SAW THE METRO ABOVE US. THE TCASII THEN GAVE US AN IMMEDIATE 'DSND.' IF WE HADN'T VISUALLY SEEN THE METRO, OUR FIRST TCASII RA WOULD HAVE CAUSED US TO CLB INTO HIM. TWR NEVER ADVISED US THEY HAD TFC ON FINAL TO RWY 35.

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.