nitpicker330 I have used the ipad internal GPS in the back of a 777 (wont work in the front because of the heated windscreens) with the air nav pro charts and the speed/alt were pretty spot on...at climb speeds exceeding 450kts right up to FL360. I have used it in a C195 and, more recently, a C185 in/around Auckland. The internal GPS is pretty bloody good. As long as you held it somewhere near the pax window in the 777 it would pick up satellites work a treat. In any GA cockpit it will a doddle...still gonna get a bluetooth GPS engine shortly though.
I am sitting in LHR using the hotel free high speed wifi to do the June 2 amendments for Ozrunways 1.0 database and then will be hooking into the 2.0 downloads.
Awesome stuff fellas