Thanks
Thanks to all - good to know I'm not in a minority. Aside from the actual need for all the Chicago Convention stuff - having now read the up to date revision (think I was using a 1995 book initially from the local library as I wrongly assumed Air Law couln't have changed that much), it now makes much more sense as a lot of the ICAO stuff wasn't included. Future learning for others - get the up-to-date material!!!