Narrative:

Landing at tjsj. Approximately 17 mi northwest descending through 3000 ft for 2200 ft on a 140 degree heading with instructions to intercept the localizer. Received a traffic callout for VFR traffic at 12:30 - 1 O'clock position and 3 mi showing 1700 ft. We both looked down at the TCAS and saw the traffic. Just as the first officer said 'he's climbing;' the contact turned amber and we received a 'traffic; traffic.' almost immediately it turned red and we received 'monitor vertical speed' followed about 3 seconds later with a 'climb; climb' and a command for a vertical speed of 2500 FPM. The first officer disconnected the autothrottles and autoplt and applied full power and started a pull-up. The traffic was now inside 1 mi and within 300 ft. The first officer then pulled harder (approximately 2 G's) and started a l-hand turn at approximately 35 degrees of bank. The closest point of approach appeared to be less than 1/2 mi (due to the turn) and 200 ft below. Neither of us saw the aircraft as we were forced to turn away as well as climb and it was under our nose. In my opinion; had the first officer not maneuvered the aircraft as aggressively as he did; and especially turned away; we would have either hit or have come exceedingly close to hitting this aircraft. The climb took us to 4000 ft and we had turned left 60 degrees when we heard 'clear of conflict.' after informing approach of the RA; we were handed off to tower for a normal visual straight-in to runway 10. After landing; I contacted the approach control and initiated a near miss report. No injuries were reported.

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Original NASA ASRS Text

Title: A TWIN JET TRANSPORT HAD A CRITICAL CONFLICT WITH ANOTHER AIRCRAFT WHILE ON APP TO TJSJ.

Narrative: LNDG AT TJSJ. APPROX 17 MI NW DSNDING THROUGH 3000 FT FOR 2200 FT ON A 140 DEG HDG WITH INSTRUCTIONS TO INTERCEPT THE LOC. RECEIVED A TFC CALLOUT FOR VFR TFC AT 12:30 - 1 O'CLOCK POS AND 3 MI SHOWING 1700 FT. WE BOTH LOOKED DOWN AT THE TCAS AND SAW THE TFC. JUST AS THE FO SAID 'HE'S CLBING;' THE CONTACT TURNED AMBER AND WE RECEIVED A 'TFC; TFC.' ALMOST IMMEDIATELY IT TURNED RED AND WE RECEIVED 'MONITOR VERT SPD' FOLLOWED ABOUT 3 SECONDS LATER WITH A 'CLB; CLB' AND A COMMAND FOR A VERT SPD OF 2500 FPM. THE FO DISCONNECTED THE AUTOTHROTTLES AND AUTOPLT AND APPLIED FULL PWR AND STARTED A PULL-UP. THE TFC WAS NOW INSIDE 1 MI AND WITHIN 300 FT. THE FO THEN PULLED HARDER (APPROX 2 G'S) AND STARTED A L-HAND TURN AT APPROX 35 DEGS OF BANK. THE CLOSEST POINT OF APCH APPEARED TO BE LESS THAN 1/2 MI (DUE TO THE TURN) AND 200 FT BELOW. NEITHER OF US SAW THE ACFT AS WE WERE FORCED TO TURN AWAY AS WELL AS CLB AND IT WAS UNDER OUR NOSE. IN MY OPINION; HAD THE FO NOT MANEUVERED THE ACFT AS AGGRESSIVELY AS HE DID; AND ESPECIALLY TURNED AWAY; WE WOULD HAVE EITHER HIT OR HAVE COME EXCEEDINGLY CLOSE TO HITTING THIS ACFT. THE CLB TOOK US TO 4000 FT AND WE HAD TURNED L 60 DEGS WHEN WE HEARD 'CLR OF CONFLICT.' AFTER INFORMING APCH OF THE RA; WE WERE HANDED OFF TO TWR FOR A NORMAL VISUAL STRAIGHT-IN TO RWY 10. AFTER LNDG; I CONTACTED THE APCH CTL AND INITIATED A NEAR MISS RPT. NO INJURIES WERE RPTED.

Data retrieved from NASA's ASRS site as of May 2009 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.