I was watching local traffic this morning and saw this track. Pretty sure it was a successful landing at the airport, but ADS-B would indicate it was off-airport.
I was looking into how ADS-B works and it seems the location is GPS-based. I’ve never seen GPS be this far off. I normally see aircraft right on the runway centerline but the track looks bad and obviously the plane is nowhere near centeline. There was also no rollout. The plane disappeared shortly after the screenshot though the age data value was always less than 1 second.
What could cause this kind of track? Defective ADS-B?