Peter wrote: N-reg (the most useful one of them all, allowing e.g. the Lancair Evolution, and allowing IFR by default) can be based in Germany Funny thing is, that you have a general permission in the german AIP for operating ECAC-reg. homebuilts but with a limitation to day/VFR. If you have a non ECAC Reg., you have to apply for permission (which in turn is limited to 180 days per year), but...