I noticed today an unusual flight path for China Airline Flight 19. I have a couple of screenshots for you to look at:
The portion of the path from JFK to Lake Superior was ADS-B based track. Then there is a long East-bound track to the correct flight path where tracking is radar based.
My guess is that the airplane followed the correct path shown as a blue dashed line but the information sent out by the ADS-B was incorrect. Has anyone seen anything like this? What could the cause be? Faulty GPS on the plane? Or could it have been an intentional spoofing of the GPS signal?