GTW - I'm afraid your comment contains a modicum of truth. When the automatics pack up far too many commercial pilots have found their flying skills lacking. But there is a big difference between airline and private pilots in their use of tablets (or EFBs). We used to fly with large heavy "libraries" that needed constant manual updates. These libraries are now a thing of the past. But given the flexibility of tablets they are now used for other tasks. But they have never been used for navigation. The PPLs usage however is the complete opposite. They are used for primary navigation and they are reliable most of time. But far too often I have had to avoid people who were in the wrong place because of their absolute reliance on an iPad. Before tablets too many PPLs were totally reliant on their GPS units and "zone burgling" was a fact of life..
TOO - Our IPads took an age to install. The power was easy. Both sides have a multi-plug (UK/Euro/US) sockets installed during manufacture. The mounts however took an age to be approved. Our biggest hurdle was to install them in a position where they didn't interfere with an escape through the sliding window. Another part of the approval was a sticker announcing that the inbuilt GPS function of the EFB may not be used for primary navigation.
PM