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Flight crew of an ATR42 climbed and turned in response to a TCASII RA. When queried, the tower controller acknowledged the presence of a cessna 172, but as no factor.
| Attributes | |
| ACN | 474262 |
| Time | |
| Date | 200005 |
| Day | Fri |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| Locale Reference | airport : tist.airport |
| State Reference | VI |
| Altitude | msl single value : 1700 |
| Environment | |
| Flight Conditions | VMC |
| Light | Dusk |
| Aircraft 1 | |
| Operator | common carrier : air carrier |
| Make Model Name | ATR 42 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | descent : approach |
| Route In Use | approach : visual |
| Flight Plan | IFR |
| Aircraft 2 | |
| Controlling Facilities | tower : tist.tower |
| Operator | general aviation : personal |
| Make Model Name | Skyhawk 172/Cutlass 172 |
| Operating Under FAR Part | Part 91 |
| Flight Phase | descent : intermediate altitude |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : multi engine pilot : cfi pilot : atp |
| Experience | flight time last 90 days : 250 flight time total : 3700 flight time type : 1800 |
| ASRS Report | 474262 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : multi engine pilot : instrument pilot : commercial |
| Events | |
| Anomaly | conflict : nmac other anomaly other |
| Independent Detector | aircraft equipment : tcas |
| Consequence | faa : reviewed incident with flight crew |
| Miss Distance | horizontal : 0 vertical : 400 |
| Supplementary | |
| Problem Areas | ATC Human Performance Flight Crew Human Performance |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | other |
Narrative:
While on final approach to runway 10 at tist, an RA was received without previous warning from tower. I initiated an immediate climb and left bank at which time tower was asked about traffic. It was only at that time that stt tower confirmed the presence of the C172 close by, stating it was 'no factor.' I thought differently, as did my first officer. I believe that the tower controller made a mistake in not reporting the traffic, for whatever reason, and that was not normally the case for stt tower. No one was hurt and not one injury occurred as a result.
Original NASA ASRS Text
Title: FLC OF AN ATR42 CLBED AND TURNED IN RESPONSE TO A TCASII RA. WHEN QUERIED, THE TWR CTLR ACKNOWLEDGED THE PRESENCE OF A CESSNA 172, BUT AS NO FACTOR.
Narrative: WHILE ON FINAL APCH TO RWY 10 AT TIST, AN RA WAS RECEIVED WITHOUT PREVIOUS WARNING FROM TWR. I INITIATED AN IMMEDIATE CLB AND L BANK AT WHICH TIME TWR WAS ASKED ABOUT TFC. IT WAS ONLY AT THAT TIME THAT STT TWR CONFIRMED THE PRESENCE OF THE C172 CLOSE BY, STATING IT WAS 'NO FACTOR.' I THOUGHT DIFFERENTLY, AS DID MY FO. I BELIEVE THAT THE TWR CTLR MADE A MISTAKE IN NOT RPTING THE TFC, FOR WHATEVER REASON, AND THAT WAS NOT NORMALLY THE CASE FOR STT TWR. NO ONE WAS HURT AND NOT ONE INJURY OCCURRED AS A RESULT.
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.