Interesting... I haven't looked since the Skippers fuel incident/crashburndie at Jundee... but that report is well worth the read RE: dodgy fuel guages and not doing the cross check. Mind you, I could be wrong and someone with more experience may help... but if say on today's flight a capacitor(s) were to pack and up and go U/S and the guages were now over/under reading, and if I DIDN'T do the 3% check (as per my company's FCOM), would the error now go undetected?? I'm thinking yes...?
BR