On several occasions I have down loaded the charts in the AIP. When planning the trip they are in the memory. After shutting down the iPad and restarting for the trip the AIP charts have disappeared. Have I some incorrect settings?

Not that I know of. We have never seen or been able to reproduce the issue in house, and until we understand it, we can't hope to fix it. This doesn't seem to happen to very many people.

Citing this fred, at least six people, including me, having this problem - on different platforms. The last time I experienced it I was allready sitting in the plane & ready for startup - checked the plate for my destination again only to get a message ' you have to be online ...' A plate I had looked at 10min before. So I got out of the plane, walked back to the terminal building, where I got wifi 'et voila' my plate was there - without downloading it again. I'm looking foreward to flight where I have to divert due to something else & the plate isn't available.....

-mike