Any 146/RJ operators prepared to admit one of those 'Doh' moments when using the GNS fuel planning page as an inflight guide - 'how goes it', forgetting that the system requires manual updating.
Memory fades, but only part of the system, fuel contents or fuel flow, was automated.
Well, yes; I managed at least one Ooops during in-flight planning. More seriously, witnessed at least two Doh moments, one involving a tech stop to refuel.
Recall the A300 at Vienna landing without fuel; as an industry we tend to forget safety lessons.