Hagar might have the answer to this question. (He usually does). In Quick Combat the flights start at 5,000 feet. There must be a way to change that but I haven't found one that works. In the CFS2 CFG file under [Quick Combat] there is an entry User Alt=0. If you change it to something else it makes no difference, so clearly that isn't the answer. I can't think of anywhere else to look. Anyone have any ideas?