The Type of aircraft is designated from the following picklist maintained by the FAA:
1 - Glider
2 - Balloon
3 - Blimp/Dirigible
4 - Fixed wing single engine
5 - Fixed wing multi engine
6 - Rotorcraft
7 - Weight-shift-control
8 - Powered Parachute
9 - Gyroplane
H - Hybrid Lift
O - Other

We present only the text since the alphanumeric abbreviation is largely used only by aircraft professionals.