[ACARS] A few changes

[R J Ware]

Keeping track of two changes:

http://www.drivehq.com/file/df.aspx/publish/acarsonline/PublicFolder/aircraft.txt

N840FJ is shown as Falcon 50EX c/n 223
This has now been re-reg and is now N451CL

http://registry.faa.gov/aircraftinquiry/NNumSQL.asp?NNumbertxt=451CL

N451CL is shown on the list as a Learjet 45 c/n 149
It has been re-registered and is now N904HD

http://registry.faa.gov/aircraftinquiry/NNumSQL.asp?NNumbertxt=904hd

Regards
Dick