Basil
Am I correct in inferring that, if TAF is CAVOK, then they don't have to plan an alternate?
Pretty much, I can't remember the numbers but Oz rules certainly do often allow despatch without the need for alternate fuel..hence the great unhappiness expressed by some on the thread in the Oz forum about the "quality" of Australian Aviation weather forecasting...
wingview
To pay extra for having more fuel should be, IMHO, a regulation.
But it
is in the regulations (in Europe at least) it's called "contingency fuel"
An extra 1000kg on a 737 would be sufficient
For what?