"Never fly upwind" Tigerbatics?
I will happilly stand corrected on this, but as far as I can see ICAO Annex 2 simply says "on the right, in the right" and we're told not to pass under or over the aircraft with right of way. That leaves two options, turn left or right.
Turning left would seem to make the collision his problem as he becomes the overtaking aircraft and has to avoid running up your chuff, but you would then lose sight of the other aircraft, and I'm not sure the CAA would be sympathetic if he can't avoiding hitting you and the full circumstances come to light at a later date.
Turning right seems to follow the normal rules, although you might lose sight of him, and you would be wise to make an immediate left turn to avoid other upwind aircraft and then leave the circuit (and collect your wits from beneath your seat) or make a full 180 so you're heading downwind (and then collect your wits from beneath your seat)!
So which is it?
