Peter, No doubt Jeremy (who is of course now the PFA or at least its
representative on earth) is shaping up to giving you a definitive ex
cathedra answer, but my understanding was that the PFA required an ASI, an
altimeter and a rev counter as proper steam age instruments and what else
you care to put in is entirely up to you. If your EFIS was a certified
instrument they might take it as a suitable substitute for any overlapping
functions but not otherwise.
Regards, David
----- Original Message -----
From: Peter Rees <peter.rees05@ntlworld.com>
>
> Sorry, should have been clearer in stating my intentions - the AC
currently
> has an ASI, VSI, Alt and turn coordinator.
>
> It has no AH or DI. I can either fit a vacuum kit and steam instruments -
> lots of weight and old fashioned or, save up for ever and buy electric
> instruments or put a Dynon in - light, modern and not essential to flight
> safety so if it does go U/S, not a safety issue.
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