Narrative:

Vectored to join 16L at denver by approach. Joined loc well before final approach point. Approach control advised airbus at our 3 o' clock and I (monitoring pilot) responded airbus in sight. We were cleared for visual. We were established on the loc for a straight in visual to runway 16L. The airbus was at our 4 o'clock and joining the loc for 16R. Before reaching the FAF; we received a TCAS RA to descend 1;800 ft per minute to avoid collision. Captain followed RA and I made multiple calls to approach to advise TCAS descent. TCAS showed less than 200 ft separation. The airbus overshot their loc and was descending onto us. When the RA stopped; we leveled out well below the GS but quickly received another RA to descend again. The airbus was still descending onto us and overshooting their runway. I could see inside the wheel well of the airbus. Again we followed the TCAS RA. When the controller responded he did not take the situation seriously and advised we were cleared for the visual and asked if we were going to continue the approach. The airbus was never given ATC instruction to stop descending or break off their approach. We had limited options because we could not climb and the ground was closing fast due to our 1800+ descent TCAS RA. We were quickly running out of room between the airbus and ground contact. I am seriously considering contacting the FAA myself about the den attitude toward safety. I have never been more upset regarding flight operations as I am on this day. Without immediate action on our part; a mid-air collision was imminent. The airbus overshot their loc and descended on top of our aircraft. We were descending 1;800 fpm with both TCAS RA and ground contact closing. Due to their inaction; the den approach control was a threat. If this situation presents itself again; I will be more forceful with radio communication in what I expect ATC to do to keep an aircraft from pinching us between themselves and the ground. The lack of ATC action was unacceptable in this event.

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Original NASA ASRS Text

Title: EMB145 First Officer laments the lack of ATC action to prevent TCAS RA's during simultaneous visual approaches to Runways 16L and 16R at DEN.

Narrative: Vectored to join 16L at Denver by Approach. Joined Loc well before final approach point. Approach Control advised Airbus at our 3 o' clock and I (monitoring pilot) responded Airbus in sight. We were cleared for visual. We were established on the Loc for a straight in visual to Runway 16L. The Airbus was at our 4 o'clock and joining the Loc for 16R. Before reaching the FAF; we received a TCAS RA to descend 1;800 FT per minute to avoid collision. Captain followed RA and I made multiple calls to Approach to advise TCAS descent. TCAS showed less than 200 FT separation. The Airbus overshot their Loc and was descending onto us. When the RA stopped; we leveled out well below the GS but quickly received another RA to descend again. The Airbus was still descending onto us and overshooting their runway. I could see inside the wheel well of the airbus. Again we followed the TCAS RA. When the Controller responded he did not take the situation seriously and advised we were cleared for the visual and asked if we were going to continue the approach. The Airbus was never given ATC instruction to stop descending or break off their approach. We had limited options because we could not climb and the ground was closing fast due to our 1800+ descent TCAS RA. We were quickly running out of room between the Airbus and ground contact. I am seriously considering contacting the FAA myself about the DEN attitude toward safety. I have never been more upset regarding flight operations as I am on this day. Without immediate action on our part; a mid-air collision was imminent. The Airbus overshot their Loc and descended on top of our aircraft. We were descending 1;800 fpm with both TCAS RA and ground contact closing. Due to their inaction; the DEN Approach Control was a threat. If this situation presents itself again; I will be more forceful with radio communication in what I expect ATC to do to keep an aircraft from pinching us between themselves and the ground. The lack of ATC action was unacceptable in this event.

Data retrieved from NASA's ASRS site as of July 2013 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.