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An air carrier took evasive action from a TCAS RA which transited perpendicular across the TCAS screen. The crew believed a phantom target was the source because no clear of conflict was issued.
| Attributes | |
| ACN | 1196925 |
| Time | |
| Date | 201408 |
| Local Time Of Day | 1201-1800 |
| Place | |
| Locale Reference | IAD.Airport |
| State Reference | DC |
| Environment | |
| Light | Daylight |
| Aircraft 1 | |
| Make Model Name | Light Transport |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Initial 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 Conflict Airborne Conflict Deviation - Altitude Excursion From Assigned Altitude Deviation - Procedural Clearance |
Narrative:
During ILS approach into iad; we received a TCAS RA. Which we climbed from 2;500 feet to 3;000 feet at approximately 2;500 FPM. We believe the traffic was a phantom target. The yellow traffic moved from one side of the screen to the other and we never received a clear of conflict. The intruder just disappeared from the screen. After a momentary level off at 3;000 feet we were cleared down to 2;000 feet. We continued with the ILS approach and landed without incident.
Original NASA ASRS Text
Title: An air carrier took evasive action from a TCAS RA which transited perpendicular across the TCAS screen. The crew believed a phantom target was the source because no clear of conflict was issued.
Narrative: During ILS approach into IAD; we received a TCAS RA. Which we climbed from 2;500 feet to 3;000 feet at approximately 2;500 FPM. We believe the traffic was a phantom target. The yellow traffic moved from one side of the screen to the other and we never received a clear of conflict. The intruder just disappeared from the screen. After a momentary level off at 3;000 feet we were cleared down to 2;000 feet. We continued with the ILS approach and landed without incident.
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.