In article ,
Greg Farris wrote:


depend on how empty your tanks were? I'm guessing no - I'm guessing this
type of problem - any serious fuel contamination problem - would show up
within minutes. Anyone really know this. Anyone here learn this the hard
way?

I know of a Seneca that was fuel with Jet fuel. Both engines failed
within 1/2 mile of the airport on takeoff. I don't know how much avgas
was in the tanks when the jet fuel was put in. I had a problem on
takeoff with water in the fuel on a '57 182. I had been flying the
airplane all day, I had fueled several times (all from the same source)
and the problem occured on the last flight of the day.



Another question : I read an official accident report (not a newspaper
report) in which ground personnel refilled a small plane's oxygen tanks
with compressed air before a mountain crossing. The pilot died in the
ensuing accident, but miraculously the single passenger survived to
confirm the oxygen-related unconciousness of the pilot as the cause of
the crash. What could this pilot have done to defend against this "rare
but not impossible" event?

SCUBA divers use a test device to determine the amount of O2 in the tank
when using mixed gas so I would have to say it is possible to test the
O2 content of your a/c system.

--
Dale L. Falk

There is nothing - absolutely nothing - half so much worth doing
as simply messing around with airplanes.

http://home.gci.net/~sncdfalk/flying.html