GAF686 landed at Boston Logan Airport.
Pretty much. The QRS11 inertial guidance system chip. FUBAR that and the aircraft doesn't know where it is of you feed it false data. It's in the last two breads.
I followed it all the way from Cologne, as well as USAF Globe77 that followed it but landed at Maine.
I lost the French Air Farce A400M that I saw leave the Irish coast after GAF686.