Don't know if it's the same for xp10, but for xp9 go into Location/Local Map and left click on the airport you're at. A large red circle should appear around it, and on the upper right corner a box opens with all the freqs for that airport in it. I believe it's the same way for xp10. http://www.x-plane.com/files/manuals/X-Plane_10_Desktop_manual.pdf Page 87 "Finding The Frequencies." Step by step guide (for xp10) taken from http://forums.x-plane.org/index.php?showtopic=55051&page=5 "1. Dial in ATIS frequency and get the weather, set your altimeter and know which runway is active. 2. Press ENTER and file a flight plan 3. Dial in Clearance Delivery frequency, press Enter and get your clearance (press enter and read it back) - if no clearance, contact Ground or Tower, in that order 4. Dial in Ground frequency - press Enter and get taxi instructions (there is no push back or engine start request at present, but I bet it will be added later) 5. Stay on Ground frequency until told to contact Tower Follow the yellow line that appears to the end of the yellow line (eg if you are crossing runways, the line will end at the runway crossing). You will then get permission to cross and the line will then appear to the next runway until you get to your departure runway). alway pull up tp the end of the yellow line, regardless of where the scenery tells you to stop. ATC doesn't know about scenery, it only knows about the yellow line. 6. Dial in tower frequency, press Enter and so on. - you get the picture - use the radios as you would in a real aircraft. find the frequencies on charts (the X-plane 10 local map has them)"