Thanks and congratulations on your retirement.
Thanks!
Do you know if you will actually see a quantity on the ground with the APU switch Off or do you have to turn the switch to On to see the quantity (albeit inaccurate until actually started and running)?
Oil quantity on our (pax) aircraft was only visible with the APU running (and for a short period after shutdown) or if the overhead (Maintenance) Ground Test Enable switch was activated. Amongst other things, the Ground Test switch powered up the APU Controller. It's the APUC which provides the data for the EICAS display.
I don't know why the Freighter should be different.
Rgds
NSEU