Originally Posted by
procede
You do realise that carrying extra fuel means burning more fuel to carry it and thus increasing costs? There is always a trade-off between safety and cost. Also more fuel means more weight which actually decreases safety a bit, particularly on take-off and landing.
Yes, I realize that that it requires more fuel and therefore costs more money. Just like having alternate fuel plus final reserve plus contingency fuel already requires more fuel and cost.
Will extra weight really make a difference for takeoff. One will just adjust their maximum thrust reduction to achieve required performance.
An extra 15 minutes of fuel on a typical landing would really have more than a negligible safety effect? I doubt it.
One really should ask themselves whether it really makes safe sense to be legal and within accepted norms to land at your alternate with 30 minutes of fuel based on reduced power holding speed at that airport.
Not nice when the weather went down at a major hub and everybody is scrambling to get to those not so busy alternates.