FC rotation system?

[Franek Grabowski]

Juha, I am not sure what your question is exactly about. Usually, squadrons were rotated between south and north for a general rest. Sometimes fresh pilots were transfered at the time to replacing units. Quite often squadrons at rest served as training units and air defense units at remote areas. Pilots were treated separately, and if a one accumulated enough flying, he was send for a rest, either ground post or operational training, sometimes other duties like aircraft delivery, etc. Usually, after pilot finished his first tour, he could seek other job.
IIRC Polish record holder is Skalski with about 320-350 missions between 1939 and 1944, then Pniak with about 300 between 1939 and 1940. Possibly there were RAF pilots with more missions, nonetheless not that many. I expect 250 being a good average.