I saw this plane flying overhead and was most certainly not a Cessna 172 on it's way to Chicago. It should have been and looked more like an American Airlines Boeing 777-200.
AAC981 AAL47 EGLL-KORD N7942B C172 Puckett Jeffrey F 2009/10/31 13:58:31
See reply #46 on the Funny or Unusual Flight IDs thread
Saw this myself tracking northwest over EGPH deleted it on database then disconected from hardware flight when I re connected it populated with correct details will have to check my log to verify.
With this one, the details for the Cessna are correct and it is the Boeing that is carrying the incorrect code. In this case the Database is correct as per the official allocated owner of the code.