Flight Crew Instrument; Flight Crew Private
Flight Crew Last 90 Days 23; Flight Crew Total 330; Flight Crew Type 334
Distraction; Confusion; Communication Breakdown; Human-Machine Interface
ATC Issue All Types; Conflict Airborne Conflict; Deviation - Track / Heading All Types; Deviation / Discrepancy - Procedural Clearance; Deviation / Discrepancy - Procedural Published Material / Policy; Inflight Event / Encounter CFTT / CFIT
Air Traffic Control Provided Assistance; Flight Crew Became Reoriented
Environment - Non Weather Related; Human Factors; Aircraft
On final; I was lined up for [Runway] 4L. I lost GPS which immediately resulted in TAWS warnings (pull up; pull up; etc) with the MFD map showing the wrong airport. This is my home airport; I knew where I was. While lined up for [Runway] 4L; Tower asked me to confirm I was lined up for [Runway] 4L; the correct runway. I confirmed I was lined up; the MFD showing the wrong airport; asked to ident; and then I panicked and thought I must be at one of the other nearby airports. I asked if Tower could see me and with the delayed response; I deviated from approach assuming they could not see me; which caused the issue with landing traffic.
SR22 pilot reported the loss of GPS information led to incorrect airport information; a false terrain warning; and an airborne traffic conflict.