Originally Posted by
fone_effect
As a pilot I find some of the answers given here quite worrying if they have come from controllers. And lay off the red wine!
As a controller, I tend to agree with you fone_effect, but I am sure it will all change when NATS open its new training "Centre for Excellence".
By the way I can heartily recommend a good brand of Barbados rum for getting the brain cells working.
Kraggy, If you are doing altimetry calculations, 30ft per millibar is generally considered close enough, unless the question specifies more accuracy.