It also might be worth mentioning now, there is an iPad aviation developer currently making a version of their very popular
Air Navigation Pro for Android.
Current progress according to devs:
Hi there Marc.
We cannot tell a specific date yet, but we expect to have a version ready in about two months. We really want to make sure it`s good enough and stable before we release it. Remember it`s not gonna have as many features as the one for iOS has.
We are working to have it available for Samsung Galaxy s2 version 2.3 and Galaxy Tab 10.1.
We are looking forward to being able to offer it to the public.
Thanks for writing.
Regards.
Sebastian Vecchio
Xample
Looks like a nice app, and more importantly they provide UK & Europe maps for it!