With regard to the statement starting with "Given your current lack of
confidence in an engine restart in flight..... . ."

I would like to say it's less that I have a lack of confidence in restart
but rather I have high confidence, even certainty that all machines will at
some point fail to fullfill their intended function.  Maintenance can, but
obviously does not always avoid the failure(s).

"What can go wrong will..."

I make repairs for a living.  I am an component level electronics
technician specializing in commercial food service equipment, which
includes steam, gas and liquid fuel powered as well as electric powered,
pneumatic and hydraulic machines using all manner of controls.  Things fail
all the time and so often it's amazing to me.  How can so many things go
wrong and all the time 24/7?

People hire me to travel to their failed equipment and repair it every day
all day.  I am buried in failed equipment, none of which I designed or
built.  These machines are designed by engineers and tested by labs like UL
and certified by NSF.  Like the Boeing 737 the machines still fail
regardless of manufacturing prowess or regulation.  I have a two week
backlog of failed machines.  Often it is the machine manufacturer who calls
me out to repair.
.
All I see every day all day is the aftermath of what went wrong and then
then the remedy.  In my employer's local office I am one of ten technicians
and we are all buried.

I am highly confident that all manner of machine fails will keep coming
from all kinds of builders and often in groups, as they have every day
since I started in electronics in 1980.

If it is a machine it will fail.  Maybe not while you are using it, but
eventually..  One could retire the machine or part before it fails, but
that's another failure mode.

I have a high confidence fails are gonna happen.  Often several in rapid
succession.



jg

ps  Just got off the phone with Dr. Pellerin, a well known lake amphib
driver who, when I presented the idea of intentionally stopping the fire in
a lake amphib motor in flight for practice said "Oh no.... no. no. no, not
in a lake".  I have to agree, there's already too much to go wrong let's
not tempt fate.  Ok, I did it in a C150, but that was a C150.
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