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Dornier 328 flight crew descended in response to a TCASII RA from a beech 1900 VFR at an altitude of 500 ft above.
| Attributes | |
| ACN | 540302 |
| Time | |
| Date | 200203 |
| Day | Thu |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | navaid : spa.vortac |
| State Reference | SC |
| Altitude | msl single value : 16000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : ztl.artcc |
| Operator | common carrier : air carrier |
| Make Model Name | Do 328 TP (Turboprop) |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | other |
| Flight Phase | descent : vacating altitude |
| Flight Plan | IFR |
| Aircraft 2 | |
| Controlling Facilities | artcc : ztl.artcc |
| Make Model Name | Beech 1900 |
| Flight Phase | cruise : level |
| Flight Plan | VFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : multi engine pilot : commercial pilot : atp |
| Experience | flight time last 90 days : 272 flight time total : 6012 flight time type : 2928 |
| ASRS Report | 540302 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Events | |
| Anomaly | conflict : airborne critical non adherence : published procedure |
| Independent Detector | aircraft equipment : tcas other flight crewa other flight crewb |
| Resolutory Action | flight crew : took precautionary avoidance action |
| Consequence | faa : reviewed incident with flight crew |
| Miss Distance | horizontal : 800 vertical : 300 |
| Supplementary | |
| Problem Areas | Aircraft ATC Human Performance Airspace Structure |
| Primary Problem | ATC Human Performance |
Narrative:
While we were making our initial descent into gsp, sc, we received a TCASII TA. We searched for the traffic, but did not have the intruder in sight, and ATC did not advise us of the traffic. We observed the intruder converge on our position rapidly, and 10 seconds after the initial TA, we received an RA to 'descend, descend.' we complied immediately with the RA and descended 500 ft below our assigned altitude, and finally saw our intruder, a beech 1900, miss us by approximately 800 ft horizontal and 300 ft vertical. Once clear of conflict, we climbed back to 1600 ft, and informed ATC of the incident. Their reply was that there was a VFR traffic 500 ft off our altitude, to which I responded 'yes, but we experienced an RA, to which they simply replied 'roger.'
Original NASA ASRS Text
Title: DORNIER 328 FLC DSNDED IN RESPONSE TO A TCASII RA FROM A BEECH 1900 VFR AT AN ALT OF 500 FT ABOVE.
Narrative: WHILE WE WERE MAKING OUR INITIAL DSCNT INTO GSP, SC, WE RECEIVED A TCASII TA. WE SEARCHED FOR THE TFC, BUT DID NOT HAVE THE INTRUDER IN SIGHT, AND ATC DID NOT ADVISE US OF THE TFC. WE OBSERVED THE INTRUDER CONVERGE ON OUR POS RAPIDLY, AND 10 SECONDS AFTER THE INITIAL TA, WE RECEIVED AN RA TO 'DSND, DSND.' WE COMPLIED IMMEDIATELY WITH THE RA AND DSNDED 500 FT BELOW OUR ASSIGNED ALT, AND FINALLY SAW OUR INTRUDER, A BEECH 1900, MISS US BY APPROX 800 FT HORIZ AND 300 FT VERT. ONCE CLR OF CONFLICT, WE CLBED BACK TO 1600 FT, AND INFORMED ATC OF THE INCIDENT. THEIR REPLY WAS THAT THERE WAS A VFR TFC 500 FT OFF OUR ALT, TO WHICH I RESPONDED 'YES, BUT WE EXPERIENCED AN RA, TO WHICH THEY SIMPLY REPLIED 'ROGER.'
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.