Andrew Gideon wrote:
Matthew S. Whiting wrote:


However, enter a climb and you were toast.


Like...a missed approach.

- Andrew


Bingo. And the only vacuum failure I ever had was during climb-out
right before entering the soup, where the standby system likely would
have been useless. Fortunately, the annunciator worked and I was able
to break off the climb while still in VMC and return.

I still think the standby vacuum system is essential with vacuum powered
instruments, and I even had a pretty reliable wet pump in my Skylane.
The ironic part is that my vacuum system failure was actually due to the
addition of the standby backup system! There was a T fitting that came
apart, and the fitting was added as part of the system. The pump itself
never failed in the 1000 hrs. that the airplane gained while I was in
partnership on it.

However, I really like the idea of an all electric airplane with
appropriate redundancy.


Matt