From flightradar24.com currently crossing Southern Ireland! Obviously something wrong with ADS-B interpretation of the AA 777
AAL116
Callsign: AAL116
Flightnr: AA116
Reg: N7942B
Hex: AAC981
Model: Cessna 172 (C172)
Airline: Puckett Jeffrey F
Lat: 52.3298
Lon: -7.5235
Altitude: 39000 feet (11887 m)
Ground speed: 483 knots
(895 km/h / 556 mph)
Track: 101°
Radar: NET2
Squawk: 7750
From : New York, John F Kennedy (JFK)
To: London, Heathrow (LHR)