Most of you all know that my interpretation of the installation regulations
is very broad. I don't say that the sucker will fall out of the sky by
installing a DME that is, for all intents and purposes, is a minor
installation and a logbook entry is all that is required by my
interpretation.

HOWEVER, a failed fuel flow transducer WILL cause the airplane to fall out
of the sky under some fairly predictable failure modes. I draw the line at
an uncertificated (PMA at the very least) fuel flow transducer.

Having said that, whatever is DOWNstream of the transducer (readout,
computer, etc.) will NOT cause the aforementioned undesired aircraft descent
and can be sailboat quality for all I care.

Jim



"Bob Noel" wrote in message
...

Also, for non-essential flight gizmos like fuel flows (for example)...
why do I need a certified fuel flow compared to an non-certified one?

Who said you do? Is that flight gizmo one of the instrument listed in
the equipment list for the certified airplane?