If what I read here, especially over the last few posts, is in fact the case, may I ask, what happened to gross error checks of flight plans? For the A320, flight planned time in minutes x 38Kg (light weight) or minutes x 43Kg (heavier weights), is a ball park figure for flight fuel. Add to these figures all the required reserves and one is within a bulls roar of fuel required.
Surely there must be more to this turn-back than what is being written here?