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An A330 flight crew on an ILS approach received and complied with an apparently phantom TCAS TA and RA.
| Attributes | |
| ACN | 938196 |
| Time | |
| Date | 201103 |
| Local Time Of Day | 1201-1800 |
| Place | |
| Locale Reference | PHL.Airport |
| State Reference | PA |
| Aircraft 1 | |
| Make Model Name | A330 |
| 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 Critical Deviation - Altitude Excursion From Assigned Altitude Deviation - Procedural Clearance |
Narrative:
While coupled to the ILS just inside jalto we received a TA and looked for traffic at the depicted one O'clock and approximately two miles position but saw nothing. We received a RA a few seconds later and it depicted the target at perhaps a mile and 400 ft below.autopilot and FD were disconnected and we rose above the glide slope to maintain the RA required vertical speed. The target seemed to follow us and became amber. No traffic was seen by us and the tower never advised us of any traffic conflict. It seemed to be a ghost target as it stayed with us. The only known traffic to us at the time was an rj landing on RWY26 in front of us initially by three and one half miles.
Original NASA ASRS Text
Title: An A330 flight crew on an ILS approach received and complied with an apparently phantom TCAS TA and RA.
Narrative: While coupled to the ILS just inside JALTO we received a TA and looked for traffic at the depicted one O'clock and approximately two miles position BUT saw nothing. We received a RA a few seconds later and it depicted the target at perhaps a mile and 400 FT below.Autopilot and FD were disconnected and we rose above the glide slope to maintain the RA required vertical speed. The target seemed to follow us and became amber. No traffic was seen by us and the Tower never advised us of any traffic conflict. It seemed to be a ghost target as it stayed with us. The only known traffic to us at the time was an RJ landing on RWY26 in front of us initially by three and one half miles.
Data retrieved from NASA's ASRS site as of April 2012 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.