If you need to mount your iPad in your plane this might be the solution you are looking for. The base mount is designed to be screwed to a panel using a standard instrument mounting holes. The iPad snaps in and is held securely.
What size instrument hole does the Airgizmos panel dock fit into?
This Airgizmos panel dock for the iPad fits a 3-1/8" hole.
Will this mount hold the iPad in the horizontal position as well as vertical?
Yes, you can orient the iPad in either vertical or horizontal positions with this dock.
Will this Airgizmos Panel Dock work with the iPad Air?
Per the supplier: No, but they we should have one for the iPad Air soon. No exact time table though.