"Peter" wrote in message
...

"Al G" wrote

I've had the "Twin glider syndrome" in a C-340. South of Klamath
Falls,
Or., at FL 220, -30C, The fuel flow for the left one started to twitch,
and
whithin 3 minutes, the engine quit. The right one followed about 5 later.
Tops were about 20,000, and the 340 wouldn't stay on top, because I had
picked up a little ice, so after one quit I had to descend. I got the
right
one lit at about 8,000, say 2500 agl, and right after breaking out VFR.
After landing in Reno, a quick drain of the tip tanks, showed hundreds of
tiny ice crystals. The sample look like one of those "Snow scenes" that
you
shake up and watch the white stuff settle. Yes, I had drained all of the
sumps prior to takeoff. No, I didn't find any liquid water, but it was -2C
in the hangar during preflight. The fuel truck checked out as well. Even
after fueling in Tuscon, warm and dry, I still had "snow" in the sample
the
next day. While in Reno, we sprayed a little avgas prist into the tank,
and
immediately drained out almost a cup of water. After doing this to all
tanks, the mechanic said I was good to go, and I left, with no more
problems.

So Prist congealed the water together?

The Prist caused the "Snowflakes" to melt immediately, allowing us to
drain it as water. I think I pulled about 1/2 of a cup from the left tip
tank alone. On the remainder of my trip to Tuscon, I burned off all the
fuel, well except a couple of gallons in the tips. I ran the locker tanks
and the aux tanks dry. I drained all tanks after landing, and found nothing.
I drained the truck before refueling, and drained all the tanks after
refueling, found nothing. I drained all tanks later that night, and the next
morning, nothing. I packed up, flew to Reno, drained the tip tanks, and
found "Snow". Thousands of tiny flakes. Yes, I shook the wings, as much as
you can shake a 340. I have no idea where the water was hiding, or how it
got back into frozen suspension.
During the IFR portion of the glide, I did spot Highway 395 south of
Susanville, along the west side of Honey Lake, on the radar. My last ditch
plan was to do a "Radar" deadstick to the highway. It would have been
absolutely fascinating because without any alternators I hadn't been running
any de-ice gear. I had no forward visibility, and was carrying about 1/2
inch.

Al G