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An md-83 on departure responded to an apparently false TCAS RA.
| Attributes | |
| ACN | 1110896 |
| Time | |
| Date | 201308 |
| Local Time Of Day | 0601-1200 |
| Place | |
| Locale Reference | TPA.TRACON |
| State Reference | FL |
| Environment | |
| Flight Conditions | Marginal |
| Aircraft 1 | |
| Make Model Name | MD-83 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Climb |
| Flight Plan | IFR |
| Component | |
| Aircraft Component | TCAS Software |
| Person 1 | |
| Function | Captain Pilot Flying |
| Qualification | Flight Crew Air Transport Pilot (ATP) |
| Events | |
| Anomaly | Aircraft Equipment Problem Less Severe |
Narrative:
We were in a climbing right turn off of runway 18L cleared to 4;000 ft. About 3;800 ft we received an RA with no previous TA. The RA directed us orally and visually to 'descend' at 1;500 - 2;000 FPM and showed the target directly on our position at the same altitude. I immediately initiated a descent to comply while we both searched outside for traffic [with] no avail. As we descended; the target stayed in the same place at the same altitude. We advised ATC of the RA and they assured us no traffic was in the area. We stopped our descent at 3;000 ft and began our climb up to 4;000 ft. The RA continued for about 2 minutes showing the same position and altitude. It then went away and operated normally for the rest of the flight. I'm sure the transition from climb to 1500 FPM descent in short period was disconcerting for the passengers. We advised the flight attendants and passengers after the event to explain what happened and to ease fear. There were no reports of injuries or adverse reactions. When arriving at our destination; the TCAS was deferred.
Original NASA ASRS Text
Title: An MD-83 on departure responded to an apparently false TCAS RA.
Narrative: We were in a climbing right turn off of Runway 18L cleared to 4;000 FT. About 3;800 FT we received an RA with no previous TA. The RA directed us orally and visually to 'descend' at 1;500 - 2;000 FPM and showed the target directly on our position at the same altitude. I immediately initiated a descent to comply while we both searched outside for traffic [with] no avail. As we descended; the target stayed in the same place at the same altitude. We advised ATC of the RA and they assured us no traffic was in the area. We stopped our descent at 3;000 FT and began our climb up to 4;000 FT. The RA continued for about 2 minutes showing the same position and altitude. It then went away and operated normally for the rest of the flight. I'm sure the transition from climb to 1500 FPM descent in short period was disconcerting for the passengers. We advised the flight attendants and passengers after the event to explain what happened and to ease fear. There were no reports of injuries or adverse reactions. When arriving at our destination; the TCAS was deferred.
Data retrieved from NASA's ASRS site as of July 2013 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.