Model aircraft approaches in straight flight at a constant height with one motor throttled, for a minimum of 100 meters, after which the motor is opened up and the model aircraft resumes normal flight. (This option is only for multi-engine subjects.


  1. Flight not straight.
  2. Model aircraft is unstable.
  3. Undue loss of height.
  4. Engine not opened up after demo.
  5. Engine not throttled back sufficiently.
  6. Insufficient duration.
  7. Not centered in front of judges’ position.
  8. Not flown parallel with the judges’ line.
  9. Too far away / too close / too high / too low