Narrative:

I was flying PF. I had requested that flight attendants remain seated on the departure due to turbulence that we experienced on the arrival into las. After takeoff from las; departure control gave us a clearance to expedite through 14000 ft; climb and maintain FL190. We were on the shead 5 oal departure in complete VFR conditions; light turbulence. Approaching mddog at 14000-15000 ft; we heard an air carrier Y talking about a couple of aircraft that they were having possible TA's with. One being a VFR at 17500 ft; I believe; and the other being a glider at an estimated 14000 ft. ATC was just beginning to advise us of the traffic when we got a TA on the VFR at 11-12 O'clock position; 5 mi. We were still climbing fairly rapidly using mct for the expedite climb. 1 second after the TA we got a descent RA command. The sun was directly on the pfd obscuring the ivsi but I could see it was commanding approximately 1500 FPM descent. I disconnected the autoplt and began a descent to follow the RA. The RA aircraft on the navigation display appeared to begin to descend. The RA changed to a 'descend now' command. I increased the descent. The lateral separation continued to diminish and the vertical separation continued to diminish even though I was increasing the descent rate to well over 3000 FPM; so I began a descending right turn up to approximately 40 degrees of bank which was in the direction of the next turn on the departure. After which the RA changed to a 'monitor vertical speed' command at which point I began to level as the ivsi was commanding. Up to this point we never made visual contact with the aircraft but as I began to level off; I saw the aircraft (a GA small aircraft; possibly a malibu or pilatus; but I was not thinking about what type it was; only its proximity to us) at 9 O'clock position; slightly higher (+700 ft) in a nose low attitude. We then began a climb again as per ATC instructions and told to slow to 250 KTS. During this event we saw the closing aircraft on the navigation display come within 2 NM and vertical separation of no less than +300 ft; but what was most concerning was that as we made deviations to avoid the TCAS aircraft; it seemed to match our every move up until we made the break to the right. We made no abrupt control movement or abnormal g-loading at any time. No passenger asked about the event to the flight attendants or to us on deplaning. Duration of event 15-20 seconds.

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Original NASA ASRS Text

Title: A319 DEPARTING LAS HAS CLOSE ENCOUNTER WITH AS MANY AS TWO LIGHT ACFT.

Narrative: I WAS FLYING PF. I HAD REQUESTED THAT FLT ATTENDANTS REMAIN SEATED ON THE DEP DUE TO TURB THAT WE EXPERIENCED ON THE ARR INTO LAS. AFTER TKOF FROM LAS; DEP CTL GAVE US A CLRNC TO EXPEDITE THROUGH 14000 FT; CLB AND MAINTAIN FL190. WE WERE ON THE SHEAD 5 OAL DEP IN COMPLETE VFR CONDITIONS; LIGHT TURB. APCHING MDDOG AT 14000-15000 FT; WE HEARD AN ACR Y TALKING ABOUT A COUPLE OF ACFT THAT THEY WERE HAVING POSSIBLE TA'S WITH. ONE BEING A VFR AT 17500 FT; I BELIEVE; AND THE OTHER BEING A GLIDER AT AN ESTIMATED 14000 FT. ATC WAS JUST BEGINNING TO ADVISE US OF THE TFC WHEN WE GOT A TA ON THE VFR AT 11-12 O'CLOCK POS; 5 MI. WE WERE STILL CLBING FAIRLY RAPIDLY USING MCT FOR THE EXPEDITE CLB. 1 SECOND AFTER THE TA WE GOT A DSCNT RA COMMAND. THE SUN WAS DIRECTLY ON THE PFD OBSCURING THE IVSI BUT I COULD SEE IT WAS COMMANDING APPROX 1500 FPM DSCNT. I DISCONNECTED THE AUTOPLT AND BEGAN A DSCNT TO FOLLOW THE RA. THE RA ACFT ON THE NAV DISPLAY APPEARED TO BEGIN TO DSND. THE RA CHANGED TO A 'DSND NOW' COMMAND. I INCREASED THE DSCNT. THE LATERAL SEPARATION CONTINUED TO DIMINISH AND THE VERT SEPARATION CONTINUED TO DIMINISH EVEN THOUGH I WAS INCREASING THE DSCNT RATE TO WELL OVER 3000 FPM; SO I BEGAN A DSNDING R TURN UP TO APPROX 40 DEGS OF BANK WHICH WAS IN THE DIRECTION OF THE NEXT TURN ON THE DEP. AFTER WHICH THE RA CHANGED TO A 'MONITOR VERT SPD' COMMAND AT WHICH POINT I BEGAN TO LEVEL AS THE IVSI WAS COMMANDING. UP TO THIS POINT WE NEVER MADE VISUAL CONTACT WITH THE ACFT BUT AS I BEGAN TO LEVEL OFF; I SAW THE ACFT (A GA SMALL ACFT; POSSIBLY A MALIBU OR PILATUS; BUT I WAS NOT THINKING ABOUT WHAT TYPE IT WAS; ONLY ITS PROX TO US) AT 9 O'CLOCK POS; SLIGHTLY HIGHER (+700 FT) IN A NOSE LOW ATTITUDE. WE THEN BEGAN A CLB AGAIN AS PER ATC INSTRUCTIONS AND TOLD TO SLOW TO 250 KTS. DURING THIS EVENT WE SAW THE CLOSING ACFT ON THE NAV DISPLAY COME WITHIN 2 NM AND VERT SEPARATION OF NO LESS THAN +300 FT; BUT WHAT WAS MOST CONCERNING WAS THAT AS WE MADE DEVS TO AVOID THE TCAS ACFT; IT SEEMED TO MATCH OUR EVERY MOVE UP UNTIL WE MADE THE BREAK TO THE R. WE MADE NO ABRUPT CTL MOVEMENT OR ABNORMAL G-LOADING AT ANY TIME. NO PAX ASKED ABOUT THE EVENT TO THE FLT ATTENDANTS OR TO US ON DEPLANING. DURATION OF EVENT 15-20 SECONDS.

Data retrieved from NASA's ASRS site as of January 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.