I've just bought myself a new Garmin handheld GPS. I noticed that the auto
dash mount is stuck to the dashboard with some kind of double-stick stuff.
Is it OK by the FAA to stick the mount onto my airplane's glare shield this
way, or do they consider it a permanent installation and require 337s and
stuff?

What about using strong Velcro? Will that pass muster with the FAA as a
temporary installation?

Henry