Full Fuel Tanks

[PeteMc]

On 7/14/2017 at 11:13 AM, milotron said:

It would seem I need to get them calibrated somehow.

Did anyone actually answer how to do a basic test on the gauges before you need to start pumping fuel out of the tank?  I probably missed it going through the messages (lots of good stuff), but didn't see anyone answer this part of your questions.

Start with the tank you are NOT testing full and take off and run on that tank for a while.  Then switch to the tank/gauge you're testing and run it down as far as you are comfortable.  Go to a level fueling ramp, hopefully one with a newer digital fuel pump, and take note of what the gauge shows.  Then fill to the 30 gal. mark.  Fill slowly as you get to 30 and stop with the needle in the middle.  After the tank has settled and  you're sure you're at 30 add what you showed before fueling with what the pump shows and it should = 30.  Then continue to fuel to the bottom of the flapper, which should be an additional 6 gal. for the K (36 per side for 72 usable). 

If you have a JPI, then tell it the tanks are full and go fly ONLY on the tank you're testing (don't test both, etc. since you know the other tank is still good).  When you come back the pump number and the JPI Fuel Used should match.

Then some day when you've run the other tank down, check it. 

If there are any questions, then go the full route of having a mechanic empty the tanks and check all the gauges.