You may select from:

- F1 - Free Flight Model details
- F2 - Control Line Model Details
- F3 - Radio Control Model Details
- F4 - Scale model details
- F5 - Electric model Details

Class Code | General type | Brief Description |
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Class F1 | Free Flight | No physical connection what so ever between the model and the competitor. |

F1A | Gliders A2 models | Gliders with the following characteristics: Surface area: 32 - 34 dm2 Minimum weight: 410 grammes Maximum loading: 50 g/dm2 Max length of launching cable: 50 m |

F1B | Rubber Powered Wakefield models | Rubber powered models with the following characteristics: Surface area: 17 - 19 dm2 Minimum weight: 190 grammes Maximum loading: 50 g/dm2 Max mass of the motor: 40 g |

F1C | Power Models | Powered models with the following characteristics: Maximum swept volume of motor(s): 2.5 cm3 Minimum total weight: 300 g/cm3 Minmum loading 20 g/dm2 Maximum loading: 50 g/dm2 Maximum motor run: 7 seconds |

F1D | Indoor Models | Rubber powered models flown indoors with the following characteristics: Maximum Span: 650 mm Minimum mass: 1 gram Ceiling heights are as follows: Category I: less than 8 metres Category II: between 8 and 15 metres Category III: between 15 and 30 metres Category IV: higher than 30 metres |

F1E | Slope Soaring Gliders | Models with automatic steering that have the following ccharacteristics: Maximum surface area: 150 dm2 Maximum loading: 100 g/dm2 Maximum flying mass: 5 kg |

F1F | Helicopter models | Models where their primary lift is generated by rotating aerodynamic surfaces. |

F1G | Rubber Powered | Coupe D'Hiver models |

F1H | Gliders | A1 class gliders |

F1J | Power Models | 1/2A class power models |

F2 | Control Line Circular Flight | The model is aerodynamically manoeuvred by control surfaces in attitude and altitude by the pilot on the ground by means of one or more wires |
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F2A | Speed Models | Characteristics: Motor swept volume: 2.5 cm3 Minimum total area: 2 dm2/cm3 of motor volume Maximum loading: 100 g/dm2 |

F2B | Aerobatic Models | Characteristics: Maximum flying mass: 5 kg Maximum surface area: 150 dm2 Maximum loading: 100 g/dm2 Maximum swept volume of motor: 10 cm3 Motors must have effective silencers. Models must take off the ground.A schedule of 16 manoeuvres is flown. |

F2C | Team Race | Characteristics: Maximum swept volume of motor: 2.5 cm3 Minimum total projected surface area: 12 dm2 Maximum mass: 700 g Minimum dimensions of fuselage at pilot: h: 100 mm, w: 50 mm, cross sect area: 39 Model must carry a scale pilot Minimum diameter of wheels: 25 mm Maximum fuel permitted: 7 cm3 Motor must be fully enclosed A cockpit with transparent windshield must be provided The motor must be able to be stopped in flight |

F2D | Combat Models | Characteristics: Maximum surface area: 150 dm2 Maximum mass: 5 kg Maximum loading: 100 g/dm2 Maximum swept volume of motor: 2.5 cm3 Maximum motor venture diameter: 4.0 mm |

F3 | Radio Controlled Models | The model is aerodynamically manoeuvred by control surfaces in attitude, direction and altitude by the pilot on the ground using radio control |
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F3A | Aerobatic Models | Characteristics (1997) Maximum overall span 2 m Maximum overall length 2 m Maximum total mass (without fuel): 5 kg Power source limitations: Any suitable power source may be utilised except those requiring solid propellants, gaseous or liquified gaseous fuels. Electric powered models are limited to a maximum of 42 volts for the propulsion circuit. |

F3B | Thermal Soaring Gliders | Characteristics: Maximum surface area: 150 dm2 Maximum total mass: 5 kg Surface Area loading: between 12 and 75 g/dm2 Minimum radius of fuselage nose: 7.5 mmThree tasks are flown in each round. The tasks are: a) Duration - a 7 minute flight and spot landing. b) Distance - as many laps of the 150 m course as is possible in 4 minutes. c) Speed - four laps of the 150 m course as fast as possible. Launching is by: hand towing, electrical powered winch or hand operated pulleys. The total length of the winch line is 200 m. The length of the hand tows is 175 m. |

F3C | Helicopters | A heavier than air aeromodel which derives all its lift and horizontal propulsion from a power driven rotor system. Characteristics: Maximum swept area of the rotors: 300 dm2 Maximum mass: 6 kg without fuel Maximum motor displacement: 10 cm3 A total of nine manoeuvres are flown and judged out of a possible 10 points each. |

F3D | Pylon Racers | Characteristics: The model must be a replica of a particular aircraft used in full scale closed course air racing. Maximum swept volume of the motor(s): 6.6 cm3 Minimum wingspan: 750 mm Minimum wing thickness at wing root: 22mm Minimum flying mass: 2.2 kg Maximum flying mass: 3.0 kgFuel supplied by the organizers: 80% methanol, 20% caster oil Flying course is triangular with height of 180 m and base of 40 m. A total of 10 laps are flown. |

F3E | Electric Powered | Renamed to the F5 category |

F3F | Slope Soaring Gliders | Provisional rules: Maximum surface area: 150 dm2 Maximum total mass: 5 kg Surface Area loading: between 12 and 75 g/dm2 Minimum radius of fuselage nose: 7.5 mmFlying task is to fly 10 laps of a 100 mmetre course laid along the edge of the slope |

F3G | Powered Gliders | |

F3H | R/C Soaring Cross Country Racing | Provisional rules:Maximum surface area: 150 dm2 Maximum total mass: 5 kg Surface Area loading: between 12 and 75 g/dm2Launching shall be by electric powered winch Maximum line length 600m with turnaround 300 metres from winch. Object is to fly the course non-stop with one model. Fastest time wins. Any pilot of the team may fly the model. If all flights are less than the course length then the longest flight wins. In the case of ties, the shortest time wins. |

F3J | Thermal Duration Gliders | Maximum surface area: 150 dm2 Maximum total mass: 5 kg Surface Area loading: between 12 and 75 g/dm2 Minimum radius of fuselage nose: 7.5 mm Launching method: 150 metre hand tow-line only Flying is done in groups Group working time: 10 minutesScoring: 1 point/sec flight time, 30 points deducted for overflyig group time by up to 1 minute score is zero if group time is over flown by more than 1 minute. 100 points is awarded for landing within 1 metre of the spot, 5 points is lost for each additional metre from the spot, 0 landing points for landings greater than 15 m from spot. |

F4 | Scale Models | A replica [minature copy] of a heavier than air man carrying aircraft |
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F4A | Free Flight | Scale Free Flight models |

F4B | Control Line | Scale Control line models |

F4C | Radio Control | Scale Radio control models |

F4D | Indoor - Free Flight | Rubber engine |

F4E | Indoor - Free Flight | CO2 engine |

F4F | Indoor - Free Flight | (Peanut formula) |

F5 | Electric Models | Characteristics: Models that are powered by an electric motor(s). Maximum surface area: 150 dm2 Maximum total mass: 5 kg Surface area loading: between 12 and 75 g/dm2 The power source must consist of only Nicad cells, a maximum of 30 cells may be used, the voltage must not exceed 42 volts. |
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F5A | Aerobatic | A total of 16 aerobatic manoeuvres are flown and judged out of 10. No World Championships have been flown in this class. |

F5B | Glider | Two tasks are flown. The first task is to complete the maximum laps of a 150 metre course in 3 minutes whilst gliding. In this task the motor is used after each set of (say) 4 or 6 laps. The second task is to complete a 5 minute duration flight with as little motor run as possible. This task is completed with a spot landing. World Championships have been flown in 1986 (Belgium), 1988 (USA), 1990 (Austria), 1992 (Holland)and 1994 (Australia). |

F5C | Helicopter | There are no contest rules for this category as yet. No World Championships have been flown in this class. |

F5D | Pylon Race | A maximum of 7 Nicad cells may be used. Maximum flying weight: 1.25 kg 10 laps of a 400 m triangular course are flown, as in F3D. One World Championship, in 1994 at Wangaratta, has been flown in this class. These rules are likely to change in the near future. |