Noticed an associated fuel indication issue on the -300ER sometime ago.
On a quick turnround the crew will enter the arrival fuel in the tech log very soon after 'chocks on'. About 15 mins later when the eng/tech gets to the flt deck the indicated fuel in tanks suddenly changes by as much as 800KG.
There was a company Tech News knocking about concerning the VOS in fuel but there was supposed to be a software fix for it.
Caused a few fuel discrepancies until we got used to the idea and always, always check the onboard fuel before allowing the refueller to start pumping.
On a quick turn round everyones in a rush!
