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Crj-700 captain experiences a TCAS RA during visual approach to runway 18R at clt; caused by B737 traffic approaching runway 18C. The RA command is initially to climb with the vsi indicating green in the climb direction then the command switches to descent with the vsi unchanged. The climb is continued until clear of conflict.
| Attributes | |
| ACN | 1156832 |
| Time | |
| Date | 201401 |
| Local Time Of Day | 1201-1800 |
| Place | |
| Locale Reference | CLT.TRACON |
| State Reference | NC |
| Aircraft 1 | |
| Make Model Name | Regional Jet 700 ER/LR (CRJ700) |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Initial Approach |
| Flight Plan | IFR |
| Component | |
| Aircraft Component | Traffic Collision Avoidance System (TCAS) |
| Person 1 | |
| Function | Pilot Not Flying Captain |
| Qualification | Flight Crew Air Transport Pilot (ATP) |
| Events | |
| Anomaly | Aircraft Equipment Problem Less Severe Conflict Airborne Conflict |
Narrative:
We were cleared the visual to 18R clt. I had B737 traffic in sight approaching 18C from the east. I pointed out traffic to the flying first officer and he shallowed his intercept angle. We were approximately 13 miles out at 4;000 ft when we got the TA followed by an RA to climb. The first officer responded correctly but within seconds we got a command to descend even though the vsi was showing a 2;000 FPM climb command. I pointed this out and the first officer continued to climb despite the ambiguous commands. I advised approach 'TCAS' climb. After clear of conflict we continued and landed without incident. Both aircraft on approach appeared to be exactly where they were supposed to be. This is not the first RA I have had at clt with parallel approaches.
Original NASA ASRS Text
Title: CRJ-700 Captain experiences a TCAS RA during visual approach to Runway 18R at CLT; caused by B737 traffic approaching Runway 18C. The RA command is initially to climb with the VSI indicating green in the climb direction then the command switches to descent with the VSI unchanged. The climb is continued until clear of conflict.
Narrative: We were cleared the visual to 18R CLT. I had B737 traffic in sight approaching 18C from the east. I pointed out traffic to the flying First Officer and he shallowed his intercept angle. We were approximately 13 miles out at 4;000 FT when we got the TA followed by an RA to climb. The First Officer responded correctly but within seconds we got a command to descend even though the VSI was showing a 2;000 FPM climb command. I pointed this out and the First Officer continued to climb despite the ambiguous commands. I advised approach 'TCAS' climb. After clear of conflict we continued and landed without incident. Both aircraft on approach appeared to be exactly where they were supposed to be. This is not the first RA I have had at CLT with parallel approaches.
Data retrieved from NASA's ASRS site 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.