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Air carrier flight crew on thompson arrival to den experienced a TCAS RA at approximately 16;500 feet with VFR traffic not issued by ATC.
| Attributes | |
| ACN | 846309 |
| Time | |
| Date | 200908 |
| Local Time Of Day | 1801-2400 |
| 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 | Descent |
| Route In Use | STAR Thompson |
| Flight Plan | IFR |
| Aircraft 2 | |
| Make Model Name | Small Aircraft |
| Person 1 | |
| Function | Captain Pilot Not Flying |
| Experience | Flight Crew Last 90 Days 210 Flight Crew Type 3000 |
| Events | |
| Anomaly | ATC Issue All Types Conflict Airborne Conflict |
Narrative:
While descending on the thompson arrival into denver we received a TCAS RA directing us to climb. We were at approximately 16500 feet when my first officer (pilot flying) responded to the RA correctly and appropriately by applying the memory items and climbed to 17500 feet. The TCAS indicated the aircraft was 400 feet below us at the time. Cloud bases were around 18-19000; but we were clear of clouds. While my first officer climbed; I got visual contact with the aircraft and told ATC we were climbing because of an RA. ATC told us that was VFR traffic; (never advised us before the RA). The aircraft was below us and approximately 1000-1500 feet horizontally displaced from us to the north and appeared to be a small twin engine aircraft. Once we were past the aircraft we continued our descent without further incident.
Original NASA ASRS Text
Title: Air carrier flight crew on Thompson Arrival to DEN experienced a TCAS RA at approximately 16;500 feet with VFR traffic not issued by ATC.
Narrative: While descending on the Thompson arrival into Denver we received a TCAS RA directing us to climb. We were at approximately 16500 feet when my First Officer (pilot flying) responded to the RA correctly and appropriately by applying the memory items and climbed to 17500 feet. The TCAS indicated the aircraft was 400 feet below us at the time. Cloud bases were around 18-19000; but we were clear of clouds. While my First Officer climbed; I got visual contact with the aircraft and told ATC we were climbing because of an RA. ATC told us that was VFR traffic; (never advised us before the RA). The aircraft was below us and approximately 1000-1500 feet horizontally displaced from us to the north and appeared to be a small twin engine aircraft. Once we were past the aircraft we continued our descent without further incident.
Data retrieved from NASA's ASRS site as of April 2012 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.