Some aircraft use static callsigns on a regular basis,but not always: 310Th As SPAR 28 01-0028,SPAR 29 01-0029,SPAR 30 01-0030 65Th As SPAR 55 C-40B 01-0015,SPAR 65 C-37A 01-0065 457Th As.458Th As,200 As,311Th As,118Th As,172Nd As,177Th As C-21A Typically use 3 digit callsigns assigned by TACC, othe...