Tony Cox wrote:

That's how I got into this conversation in the first
place, and why I think my existing W&B is out!


I thought that your point was that the AP who did the last
W&B weighed it with the fluids in place, but then subtracted
the "consumable fluids", but forgot to account for the "unusable"
fluids?

The differences in weighing proceedures shown for various models
on the 182 TCDS either call for computing a "dry" weight, or
a "wet" weight where the aircraft is ready to fly, but contains
only the "unusable fluids".

I cannot conceive a situation where the capacity of your fuel tanks
could change by ~ 10 gallons unless some major mods were done to
the fuel system, i. e. plastic liners inplace of bladders, etc.

The "unusable" fuel in my 182 is only 3 gal (79 usable, 82 total),
so even if the AP did the calc wrong, we would be quibling about
only ~ 18lbs. How you think you got screwed out of 60lb?

MikeM