| A1 | Aerial Application |
| A2 | Aerial Application Converted |
| A3 | Air Taxi |
| A4 | Airplane |
| A5 | Airship |
| A6 | All Cargo Carrier |
| A7 | Anti-submarine |
| A8 | Attack Aircraft |
| A9 | Alcohol Fuel Dragster |
| AA | Alcohol Funny Car |
| AB | Acrobatic |
| B1 | Bomber |
| B2 | B Fuel Dragster |
| B3 | Baby Grand Stock Car |
| B4 | Boat |
| B5 | Banner Towing |
| B6 | Bush Flying |
| C1 | Certified Route Air Carrier (Passenger & Cargo) |
| C2 | Commuter Air Carrier |
| C3 | Corporate or Executive Aircraft |
| C4 | Crop Duster |
| C5 | Cargo or Transport Aircraft |
| C6 | Cold Weather Aircraft |
| C7 | Car |
| C8 | Canoe |
| C9 | Cartography |
| D1 | Dirt Car |
| D2 | Double-A Alcohol Dragster |
| D3 | Double-A Altered Dragster |
| D4 | Double-A Gas Dragster |
| D5 | Double-B Funny Car |
| D6 | Dragster |
| D7 | Dune Buggy |
| D8 | Demolition Derby |
| E1 | Experimental Aircraft |
| E2 | Early Warning or Electronic Aircraft |
| F1 | Free Balloon |
| F2 | Fighter Aircraft |
| F3 | Formula 400 Auto |
| F4 | Formula Atlantic Auto |
| F5 | Formula Continental Auto |
| F6 | Formula Ford Auto |
| F7 | Formula One Auto |
| F8 | Formula Super Vee Auto |
| F9 | Flat Bottom Boat |
| FA | Fire Fighting |
| FB | Float Plane |
| G1 | Glider |
| G2 | Gyrocopter |
| G3 | Gyroplane |
| G4 | Go-cart |
| G5 | Grand American Stock Car |
| H1 | Helicopter |
| H2 | High Performance Aircraft |
| H3 | Home Built Aircraft |
| H4 | Hot Air Balloon |
| H5 | Hobby Stock Car |
| H6 | Hydroplane |
| I1 | Indy Car (Turbo-Charged Engine) |
| I2 | Ice Boat |
| I3 | Inboard Boat |
| J1 | Jet Aircraft |
| J2 | Jalopy Stock Car |
| J3 | Jet Car |
| J4 | Jet Boat |
| K1 | Kayak |
| L1 | Lighter-than-air Balloon |
| L2 | Late Model Sportsman Car |
| L3 | Late Model Stock Car |
| L4 | Limited Sportsman Stock Car |
| M1 | Multiengine Land Aircraft |
| M2 | Multiengine Sea Aircraft |
| M3 | Missile Carrier Aircraft |
| M4 | Midget Car |
| M5 | Mini-stock Car |
| M6 | Modified Gas Coupe or Sedan |
| M7 | Modified Stock Car |
| M8 | Mini-boat |
| M9 | Modified Outboard Boat |
| MA | Modified Motorcycle |
| MB | Motorcycle |
| MC | Mod-stock Snowmobile |
| MD | Modified Snowmobile |
| O1 | Observation Aircraft |
| O2 | Off Road Vehicle |
| O3 | Outboard Boat |
| O4 | Open Modified Snowmobile |
| P1 | Paraplane |
| P2 | Plane |
| P3 | Prototype Aircraft |
| P4 | Patrol Aircraft |
| P5 | Drone Controller or Director Aircraft |
| P6 | Professional Outboard Boat |
| R1 | Radio Controlled Aircraft |
| R2 | Reconnaissance Aircraft |
| R3 | Runabout Boat |
| S1 | Single Engine Land Aircraft |
| S2 | Single Engine Sea Aircraft |
| S3 | Supplemental Air Carrier |
| S4 | Search and Rescue Aircraft |
| S5 | Sand Buggy |
| S6 | Sling-shot Dragster |
| S7 | Sports Car |
| S8 | Sprint Car |
| S9 | Stock Car |
| SA | Street Stock Car |
| SB | Super Stock Car |
| SC | Super-charged Gas-burning Coupe or Sedan |
| SD | Stock Division Motorcycle |
| SE | Snowmobile |
| SF | Stock Snowmobile |
| SG | Stunt |
| T1 | Twin Engine Aircraft |
| T2 | Tanker Aircraft |
| T3 | Trainer Aircraft |
| T4 | Tunnel Boat |
| U1 | Ultralight Aircraft |
| U2 | Utility Aircraft |
| U3 | Unsuper-charged Gas-burning Altered Dragster |
| U4 | Unsuper-charged Gas-burning Dragster |
| V1 | Vintage Aircraft |
| V2 | Vertical Takeoff Aircraft |
| V3 | Vee-bottom Boat |
| W1 | Weather Aircraft |