I suppose the question at the back of mind is this.
If Sydney is forecast CAVOK, should you carry an alternate? I'm looking out the window at the moment at a Botany Bay and airport skyline that only has single Chemtrail (
) to mark the sky. I'd plan to arrive in Sydney on a day like today with about 75 minutes worth of fuel. You want me to turn up with more than double that in case of.........
If I'm flying from MEL-SYD I have CBR from about 10'000' on descent. If CBR's gone u/s due FG in the morning but Sydney's wide open you think I should have a return to Melbourne? My 'normal' fuel means I have Richmond anyway but that's considered an 'emergency' field for my operation.