Light Transport
Flight Crew Air Transport Pilot (ATP)
Confusion; Distraction
Aircraft Equipment Problem Less Severe; Conflict Airborne Conflict; Deviation - Altitude Excursion From Assigned Altitude; Deviation / Discrepancy - Procedural Clearance
Aircraft Equipment Problem Dissipated; Flight Crew Returned To Clearance; Flight Crew Took Evasive Action
Procedure; Aircraft
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.
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.