(Michael) wrote in message . com...
...What we need are accurate fuel gauges that are cheap enough to make
retrofits sensible. As long as they have to be FAA certified, that
won't happen.

Hm. An FAA certified fuel gauge has to be right on two conditions:
full and empty. No assurances of correctness anywhere else. So, it
could bounce all over the place and then in the last quarter of the
tank rapidly descend to empty. I would like a higher standard myself.

-Malcolm Teas