So kicking back at the lake tonight and i catch a conversion with two guys on Ch 16, one pointing out where he off roads in the Kern Canyon.. I can tell they are in Helicopters and I'm assuming two different aircraft. Via the conversations they are returning to Bakersfield after doing aerial surveys somewhere in the Kern Valley.. Not that i really care about these two guys yapping but it got my curiosity going. GMRS is a ground-base communications service, does this mean you or not allowed to use GMRS radios on Aircraft. I guess i'm being lazy, i couid read the rules again,, , but last i did, i certaainly don't recall anything in the rules specifying aircract use..