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B737-700 captain reported they received an RA for parallel runway traffic even though their TCAS was in 'TA' mode.
| Attributes | |
| ACN | 1506966 |
| Time | |
| Date | 201712 |
| Local Time Of Day | 1201-1800 |
| Place | |
| Locale Reference | NCT.TRACON |
| State Reference | CA |
| Environment | |
| Flight Conditions | VMC |
| Light | Night |
| Aircraft 1 | |
| Make Model Name | B737-700 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Initial Approach |
| Route In Use | Visual Approach |
| Flight Plan | IFR |
| Person 1 | |
| Function | Captain Pilot Not Flying |
| Qualification | Flight Crew Air Transport Pilot (ATP) |
| Events | |
| Anomaly | Aircraft Equipment Problem Less Severe Inflight Event / Encounter Other / Unknown |
Narrative:
On the charted visual approach arrival into ATC advised traffic on approach to the parallel runway. We advised we had a visual on the other aircraft. ATC turned us off the arrival with a vector 155 degrees towards the other aircraft; advising us he would turn us back onto the localizer after passing thru the localizer. When we were vectored back onto the localizer and cleared for the visual approach; it placed us exactly paralleling the other carrier aircraft. We had discussed and then placed the transponder in TA. Approaching the FAF we received a descend RA. We descended as instructed following the RA. The other aircraft was descending with us so it gave another RA. I placed the transponder in altitude only attempting to silence the RA as we had a visual on the other aircraft and it should not have been sounding an RA in TA. We continued descending and landed uneventfully.
Original NASA ASRS Text
Title: B737-700 Captain reported they received an RA for parallel runway traffic even though their TCAS was in 'TA' mode.
Narrative: On the Charted Visual Approach Arrival into ATC advised traffic on approach to the parallel runway. We advised we had a visual on the other aircraft. ATC turned us off the arrival with a vector 155 degrees towards the other aircraft; advising us he would turn us back onto the Localizer after passing thru the Localizer. When we were vectored back onto the Localizer and cleared for the Visual Approach; it placed us exactly paralleling the other carrier aircraft. We had discussed and then placed the transponder in TA. Approaching the FAF we received a DESCEND RA. We descended as instructed following the RA. The other aircraft was descending with us so it gave another RA. I placed the transponder in ALT only attempting to silence the RA as we had a visual on the other aircraft and it should not have been sounding an RA in TA. We continued descending and landed uneventfully.
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.