Capt H Peacock
The requirement for the extra 20 minutes holding fuel WAS a class A notam some years ago, from 'round about 1990 or so.
'Tis my opinion that, if ANY flight is dispatched to LHR/LGW without at LEAST this amount of extra fuel, the respective company needs to have their landing slots cancelled...period.
Otherwise, it will one day be "Avianca Colombia" time, somewhere in the London suberbs...
