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Emb-175 captain reported ignoring TCAS commands after receiving what he felt was inaccurate guidance that could have resulted in a midair collision.
| Attributes | |
| ACN | 1345788 |
| Time | |
| Date | 201604 |
| Local Time Of Day | 1801-2400 |
| Place | |
| Locale Reference | IAH.Airport |
| State Reference | TX |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Make Model Name | EMB ERJ 170/175 ER/LR |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Climb |
| Flight Plan | IFR |
| Component | |
| Aircraft Component | Traffic Collision Avoidance System (TCAS) |
| Person 1 | |
| Function | Pilot Flying Captain |
| Qualification | Flight Crew Air Transport Pilot (ATP) |
| Events | |
| Anomaly | Aircraft Equipment Problem Critical Conflict Airborne Conflict Deviation - Procedural Published Material / Policy |
Narrative:
We were taking off runway 15L at iah. ATC told us to line up and wait. Once cleared for take[off] ATC instructed us to fly runway heading and maintain 2;000 feet. I was the pilot flying. We took off and leveled off at 2;000 feet as instructed. ATC instructed that there would be traffic crossing [traffic] overhead at 3;000 feet and to stay level at 2;000 feet. We stayed at 2;000 feet and had the traffic insight. At this time the TCAS system sensed the traffic and gave a RA to climb. I disregarded this RA and stayed level at 2;000. We had the traffic in sight the whole time and we were complying with ATC instructions. I believe if I would have followed the RA this would have cause a major issue and possibly a midair collision.both my first officer; my jumpseater and I had the traffic in sight the whole time. Once the traffic was clear then ATC instructed us to climb unrestricted to 16;000 feet. We proceeded on our way uneventfully.I believe in this very unique situation that the TCAS was wrong. If I [had] not [had] the traffic in sight we would have immediately followed the RA; but [since] we did have the traffic and we knew he would be crossing overhead the best action was to stay level at 2;000 feet and [let] the traffic pass overhead.
Original NASA ASRS Text
Title: EMB-175 Captain reported ignoring TCAS commands after receiving what he felt was inaccurate guidance that could have resulted in a midair collision.
Narrative: We were taking off Runway 15L at IAH. ATC told us to line up and wait. Once cleared for take[off] ATC instructed us to fly Runway heading and maintain 2;000 feet. I was the pilot flying. We took off and leveled off at 2;000 feet as instructed. ATC instructed that there would be traffic crossing [traffic] overhead at 3;000 feet and to stay level at 2;000 feet. We stayed at 2;000 feet and had the traffic insight. At this time the TCAS system sensed the traffic and gave a RA to climb. I disregarded this RA and stayed level at 2;000. We had the traffic in sight the whole time and we were complying with ATC instructions. I believe if I would have followed the RA this would have cause a major issue and possibly a midair collision.Both my FO; my jumpseater and I had the traffic in sight the whole time. Once the traffic was clear then ATC instructed us to climb unrestricted to 16;000 feet. We proceeded on our way uneventfully.I believe in this very unique situation that the TCAS was wrong. If I [had] not [had] the traffic in sight we would have immediately followed the RA; but [since] we did have the traffic and we knew he would be crossing overhead the best action was to stay level at 2;000 feet and [let] the traffic pass overhead.
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.