| Category | Definition | Subcategory | Definition
|
| F1 | Free Flight | F1A | Gliders
|
| | F1B | Models with extensible motors (Wakefield)
|
| | F1C | Power Models
|
| | F1D | Indoor Models
|
| | F1E | Gliders with Automatic Steering
|
| | F1F | Helicopter Models
|
| | FIG | Models with Extensible Motors (Coupe D'Hiver)
|
| | F1H | Gliders(A-1 class)
|
| | F1J | Power Models (1/2 A class)
|
| | F1K | Models with C02 Engines
|
| | F1L | Indoor EZB Models [C1]
|
| F2 | Control Line | F2A | Speed Models
|
| | F2B | Aerobatic Models
|
| | F2C | Team Racing Models
|
| | F2D | Combat Models
|
| F3 | R/C Aerobatics | F3A | Aerobatic Power Models
|
| | F3B | Theermal Soaring Gliders
|
| | F3C | Helicopters
|
| | F3D | Pylon Racers
|
| | F3F | Slope Soaring Gliders
|
| | F3G | MOTOR GLIDERS
|
| | F3H | Soaring Cross Country Racing
|
| | F3I | Aero Tow Soaring Models
|
| | F3J | Thermal Duration Gliders
|
| F4 | Scale Model Flying | F4A | Free Flight Flying Scale Models
|
| | F4B | Control Line Flying Scale Models
|
| | F4C | Radio Controlled Flying Scale Models
|
| | F4D | Free Flight Indoor Scale Models (extensible motors)
|
| | F4E | Free Flight Indoor Scale Models (CO2 or electric motors)
|
| | F4F | Free Flight Indoor Scale Models (Peanut formula)
|
| F5 | R/C Electric Powered | F5A | Aerobatic Models
|
| | F5B | Motor Gliders
|
| | F5C | Helicopters
|
| | F5D | Pylon Racers
|
| F6 | Airsports Promotion Classes | |
|
| F7 | Lighter-Than-Air | |
|
| SM | Space Models | |
|
