ORIGINAL: dredhea
My local club has a long standing rule against flying on any channel that is within two channels of one that is in use.
I have seen at our field, chan 50, 51, 52, and 53 in the air at one time. We only allow 4 planes up at once, and the ppl on those chans, including me at the time, are regular fliers. We have never had a glitch, yet.