Russell Duffy wrote:

 

FWIW, this is the same philosophy that I use with my fuel pumps.  I check them individually as a pre-flight item, then run them both during flight.  My reasoning for this is to virtually eliminate the possibility of an in-flight fuel pump emergency.  I'd MUCH rather find out that one of my pumps has died while I'm safely on the ground, than to experience the anxiety of having the engine quit in flight.  The other plus is eliminating emergency checklist items.  If all your backup systems are already running, and the engine quits, you might as well just concentrate on landing dead stick.   The only downsides are a bit more current draw, and wear and tear on the pumps.  If the alt fails, I'll turn off one fuel pump, and one EWP to save some energy.  If I have to replace the pumps within a few years, big deal.  It'll be the cheapest thing I've done on this plane :-) 

  

I do the same thing Rusty, I just run both fuel pumps all the time. If you run one pump and it fails, the engine will stop running  immediately. If you run an EWP and it fails, your engine won't quit immediately, so you would have a little time to switch over to the other EWP.

-- 
Perry Mick
http://www.ductedfan.com