Interesting point.........
system (FQIS), had the actual quantity of fuel in the main tanks been established after arrival in Jakarta, using a cross check similar to that required in the operator’s FMM procedures prior to revision, it is reasonable to expect that the quantity indicating error for the number-3 tank would have been identified. Therefore, the cause of the malfunction was of lesser importance than the fact that the revisions to the refuelling procedures had significantly reduced the opportunity for the flight crew or engineering personnel to be alerted to, or identify, any malfunction to the FQIS.