A1       Airline Transport Pilot
A2       All Cargo Air Service Certificate
C1       Certificate of Public Convenience and Necessity
C2       Commercial
C3       Competition Driver's License
F1       Flight Instructor
MV       Motor Vehicle Operator License
P1       Private
R1       Recreational
S1       Student
U1       U.S. Parachute Association Class A
U2       U.S. Parachute Association Class B
U3       U.S. Parachute Association Class C
U4       U.S. Parachute Association Class D