EMB ERJ 145 ER/LR
Flight Crew Air Transport Pilot (ATP)
Situational Awareness; Other / Unknown
ATC Issue All Types; Conflict Airborne Conflict; Deviation / Discrepancy - Procedural Other / Unknown
Air Traffic Control Issued New Clearance; Flight Crew Executed Go Around / Missed Approach; Flight Crew Took Evasive Action
Human Factors; Procedure; Airspace Structure
4 separate TCAS events within 45-60 secs. We received a TCAS TA; traffic was approximately 8 o'clock and less than 1 mile 800 feet below. We then received a TCAS RA (Monitor Vertical Speed; target VS zero). I complied with the TA; and told the PM to notify ATC. The TA was over; and I returned to a descent to maintain glideslope. We then received another RA (Monitor Vertical Speed; target VS +300-500). I complied with the second TA; and when the RA was over I returned to a descent to re-establish glideslope. We then received a third RA (CLIMB VS target +2000). Strike 3; game over; I'm all done playing; max effort climb to escape the traffic. Traffic on ILS 16L encroached on our 16R final approach course. We were established on the LOC/GS and maintain 210 KTS about 3 miles from the final approach fix.I applied full thrust and began an escape maneuver. I asked the PM to notify ATC that we were in a TCAS Climb. She asked if we wanted another approach; and before I could answer she broke us off the ILS with a right turn to 260. We were at 10;400 and requested a new altitude assignment. We were given 10;000 and I descended. Autopilot was re-engaged. We were vectored for another visual to 16R and landed without further incident. While being vectored back to the approach; ATC said: 'if you would just notify ATC that you can't accept simultaneous ILS approaches we could give you extra spacing.' I responded that we shoot close proximity simultaneous ILS every day; and the TCAS never goes off 4 times; with 3 separate RA commands. I further stated that we had been established on the LOC/GS and the Airbus on 16L seemed very close to us in our estimation (800 ft below and less than 1 mile). ATC advised that we had 'both looked pretty good to her.' I was flabbergasted that she made it seem like it was my fault? Clearly there was a loss of separation today. We all concurred that the Airbus on 16L was clearly TOO CLOSE TO US.
[Report narrative contained no additional information.]
EMB145 flight crew reported multiple TCAS RA events during an ILS 16R approach to DEN and went around.