"Jay Honeck" writes:

Yesterday we had our 496 "panel docked" with the installation of an
"AirGizmo". (See them he http://www.airgizmos.com/) [...] I
can't say enough good things about this unit, and -- best of all --
your shop can do the install with nothing more than a logbook entry.
[...]

Just curious, but sort of FAA-style authorization permits such a
modification to a certified airplane without at least a field
approval? As already spotted during an earlier thread here,
even the manufacturer says otherwise:

http://www.airgizmos.com/faq.asp

- FChE