N944TB - It shows to be a Hawker jet...
British Aerospace, HS-125-700A (H25B)
cn: 257177
According to the FAA this looks to be a old registration...
http://registry.faa.gov/aircraftinquiry/NNum_Results.aspx?NNumbertxt=944TB
With the new registration being N2KZ...
http://registry.faa.gov/aircraftinquiry/NNum_Results.aspx?NNumbertxt=N2KZ
Clear as Mud?
lol
N83 is in the database...
http://www.airport-data.com/aircraft/N83.html
84-24377 is a C-12 Huron, you'll have to input that one your self.
http://www.joebaugher.com/usaf_serials/1984.html