The model aircraft approaches in straight level flight to a point directly in front of the judges. It then continues for a minimum of 75 meters before it turns away to track 90º from the judges’ line and flies straight and level for a minimum of 150 meters before turning to track parallel with the judges’ line for a further minimum of 75 meters. It then turns to track directly towards the judges for a minimum of 150 meters, to a point in front of the judges, before completing a final turn to intercept the original entry track. This maneuver describes a rectangle over the ground. This option may only be nominated for non-aerobatic aircraft.


  1. Not commenced and finished at points equidistant from the judges.
  2. Model aircraft changes height.
  3. Rate of turn at corners not constant or corners not 90°.
  4. Legs are not straight.
  5. Legs too long or too short.
  6. Opposite sides of rectangle are not of equal length.
  7. Correction for drift not properly made.
  8. Final leg of rectangle not centered on judges’ position.
  9. Start and finish tracks not the same.
  10. Start and finish tracks not parallel with judges’ line.
  11. Too far away / too close / too high / too low.