Citation II S2/Bravo (C550)
Flight Crew Multiengine; Flight Crew Instrument; Flight Crew Air Transport Pilot (ATP); Flight Crew Flight Engineer
Flight Crew Last 90 Days 37; Flight Crew Total 18000; Flight Crew Type 2300
Human-Machine Interface; Distraction; Confusion
Aircraft Equipment Problem Less Severe; Deviation - Track / Heading All Types; Deviation / Discrepancy - Procedural Clearance
Air Traffic Control Issued New Clearance; Air Traffic Control Issued Advisory / Alert; Flight Crew Returned To Clearance
Aircraft; Human Factors
Was given clearance to proceed directly to FACIA and intercept the localizer for Runway 31R. About a mile from FACIA I began to get a TCAS TA. While looking for traffic I missed the intercept and flew through the localizer perhaps 1/10 of a mile or less. ATC issued a turn back to the localizer. I continued to get the TA during final and while taxiing into the FBO.ATC did not say there was any conflict or problem from the deviation.Maintenance has been alerted.Corrective action: I had the number two VOR set up for the ILS. I should have had the number one set up as well or had the approach set up on the FMS so when the TA occurred and I was distracted looking for what could have been a false echo; the aircraft would have made the turn inbound on the localizer. The approach should have been flown as if in IMC conditions; even though we were VMC.
Distracted by an apparently false TCAS TA the single pilot of a C-550 flew through the localizer he had been cleared to intercept.