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An MD80 received a TCASII RA leaving 3000 ft on approach into dfw. No traffic observed from cockpit or tower.
| Attributes | |
| ACN | 436901 |
| Time | |
| Date | 199905 |
| Day | Mon |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | navaid : ttt.vor |
| Altitude | msl bound lower : 2900 msl bound upper : 3000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tower : dfw.tower tower : dtw.tower |
| Operator | common carrier : air carrier |
| Make Model Name | MD-80 Super 80 |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | other other vortac |
| Flight Phase | descent : approach |
| Route In Use | approach : visual |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| ASRS Report | 436901 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : commercial pilot : instrument pilot : multi engine |
| ASRS Report | 436900 |
| Events | |
| Anomaly | conflict : airborne less severe |
| Independent Detector | aircraft equipment : tcas |
| Resolutory Action | flight crew : took precautionary avoidance action |
| Supplementary | |
| Problem Areas | Aircraft |
| Primary Problem | Ambiguous |
Narrative:
Cleared for visual approach to runway 18R at dfw. Leaving 3000 ft, we received a TCASII RA for pop-up traffic below us. We did not acquire traffic visually nor was dfw tower aware of the offending traffic. We responded to RA and it worked as advertised.
Original NASA ASRS Text
Title: AN MD80 RECEIVED A TCASII RA LEAVING 3000 FT ON APCH INTO DFW. NO TFC OBSERVED FROM COCKPIT OR TWR.
Narrative: CLRED FOR VISUAL APCH TO RWY 18R AT DFW. LEAVING 3000 FT, WE RECEIVED A TCASII RA FOR POP-UP TFC BELOW US. WE DID NOT ACQUIRE TFC VISUALLY NOR WAS DFW TWR AWARE OF THE OFFENDING TFC. WE RESPONDED TO RA AND IT WORKED AS ADVERTISED.
Data retrieved from NASA's ASRS site as of July 2007 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.