A319 flight crew reported responding to a TCAS RA on approach to den.

Attributes
ACN	1347540
Time
Date	201604
Local Time Of Day	1201-1800
Place
Locale Reference	DEN.Airport
State Reference	CO
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Make Model Name	A319
Operating Under FAR Part	Part 121
Flight Phase	Initial Approach
Route In Use	Visual Approach
Flight Plan	IFR
Aircraft 2
Make Model Name	Any Unknown or Unlisted Aircraft Manufacturer
Person 1
Function	Captain Pilot Not Flying
Qualification	Flight Crew Air Transport Pilot (ATP)
Experience	Flight Crew Total 14137 Flight Crew Type 10964
Person 2
Function	Pilot Flying First Officer
Qualification	Flight Crew Air Transport Pilot (ATP)
Experience	Flight Crew Last 90 Days 160 Flight Crew Total 9392 Flight Crew Type 3865
Events
Anomaly	ATC Issue All Types Conflict Airborne Conflict Deviation - Altitude Excursion From Assigned Altitude

Narrative:

On downwind to denver at 11;000 ft. Told VFR traffic circling over downtown denver at 9;500 ft. Not in sight. Instructed to descend to ten thousand. Traffic not in sight. Frequency busy. Told to turn left to base leg; away from traffic; and received TCAS climb alert. Clear of traffic quickly; informed controller; cleared for a visual to 35L. High and tight. Close to unstabilized approach but handled well by first officer and landed.

Original NASA ASRS Text

Title: A319 flight crew reported responding to a TCAS RA on approach to DEN.

Narrative: On downwind to Denver at 11;000 ft. Told VFR traffic circling over downtown Denver at 9;500 ft. Not in sight. Instructed to descend to ten thousand. Traffic not in sight. Frequency busy. Told to turn left to base leg; away from traffic; and received TCAS CLIMB alert. Clear of traffic quickly; informed controller; cleared for a visual to 35L. High and tight. Close to unstabilized approach but handled well by FO and landed.

Data retrieved from NASA's ASRS site 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.