Flightaware track errors

FlightAware General
1

Has anyone seen an issue like this where the displayed flight track has a regular heading oscillation? This aircraft is equipped with UAT ADS-B out and the actual flight track was pretty straight contrary to the display and graph data. This happened in similar locations on both the westbound KSUS to KJEF and return eastbound route KJEF to KSUS 30 minutes later. The westbound leg has regular heading deviations to the South with the east bound flight having errors to the North

flightaware.com/live/flight/N20 … /KJEF/KSUS
flightaware.com/live/flight/N20 … /KSUS/KJEF

2

I would guess that MLAT is being used if there aren’t many UAT 978 receivers in the area.

3

No it’s FAA data, that’s what the FAA data sometimes looks like…

4

We usually see this from different radar sites providing alternating positions with an offset between the two due to measuring error.

Not sure where the FAA has 978 deployed and in use feeding us.