Double Bogey- spot on
For the record, it may not have happened in this case. BUT, if the aircraft had the same fault that happened to the Barton aircraft a few days later and was discovered in a few aircraft in the fleet check, then that’s a game changer. What if the fuel wasn’t ever in the tanks at take off? All the stopwatches in the world wouldn’t have helped.
However, even if the fault had been present, there was enough belt and braces systems to give the pilot the information he needed.
IF HE HAD BEEN TAUGHT AND UNDERSTOOD THE FUEL SYSTEM PROPERLY
Not looking for an excuse, just looking for a reasonable understanding of why Dave might have been confused