N550GA is shown as a Gulfstream 550 c/n 5155 here: http://www.drivehq.com/file/df.aspx/publish/acarsonline/PublicFolder/aircraft.txt The CAA site shows it as c/n 5211 http://registry.faa.gov/aircraftinquiry/NNumSQL.asp?NNumbertxt=550GA Gulfstream 550 c/n 5155 is current as EC-KUM Source: http://www.laasdata.com/corpjet/index.php Regards Dick --