On 21/02/2014 11:37, wrote:
Are you aware of this Document?

http://www.dg-flugzeugbau.de/fileadm...%20DG-G-07.pdf

He may well be, but since his problem is the Minimum Equipment List and
the heading of G-07 is:

Subject : Installation of instruments and equipment which are not
part of the minimum equipment.

it's probably not that helpful.

GC

Randy