I’m sure there’s a simple answer but here goes.. How does a G5 know the difference between power failure and just cutting off the master switch? It’s suppose to run for hours in the event of a power failure but it shuts down within a min or so of switching off the master. Here’s what has me concerned. I’m looking over our 45 year old emergency procedures and thinking about what would actually happen with all the updated equipment. For electrical fire in flight the Cessna procedure is to obviously cut off the Master switch as the 1st step. It seems to me that this would kill my only source of attitude info. It’s possibly more appropriate to just cut off the avionics master as the 1st step and then the aircraft master as necessary. This airplane didn’t have an avionics master from Cessna and therefore it isn’t addressed in the procedure. Appreciate it.