Narrative:

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.

Google
 

Original NASA ASRS Text

Title: SR22 pilot reported the loss of GPS information led to incorrect airport information; a false terrain warning; and an airborne traffic conflict.

Narrative: 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.

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.