"Tom S." wrote in message
...


The real "best of both worlds" is a dual bus electrical system with a
vacuum
for backup/redundancy.

Yes, I agree completely.

Unfortunately, Cirrus seems to be leading the way without vacuum systems and
I do not think this is a good idea.

To some extent this has parallels with Cirrus installing the ballistic
parachute and using that as an excuse to not perform spin testing.

Similarly this reminds me of the discussion I had with a Cirrus rep at
Oshkosh about their TKS de-icing system option. The rep said it was
"Certified for Inadvertent Icing" which he said was a step between
non-approved deicing equipment and known-icing approval. I say that is
nonsesnse -- what they probably have is an STC approved on a "does no harm"
basis and you could get a tuna fish sandwich on the copilot seat approved
under the same terms. It is not known-ice.

I think Cirrus has some great ideas for safety but I am not certain the
execution is optimum or complete on a number of them.

--
Richard Kaplan, CFII

www.flyimc.com