Originally Posted by Dan Winterland
And not all controllers give you the correction as required as I found out two nights ago at Beijing with a temperature of ISA -18. Being radar vectored to the north of the airfield, we descended to 1200M (3970') as instructed only to almost immediately get a EGPWS 'Terrain, Terrain - Pull Up' which of course we followed. The 1200M was mentioned on procedure for that runway and had we followed the procedure, we would have added 400' as my company makes the corrections easy so we add 10% for ISA -15 to ISA-30. The 1200M is based on an obstuction of 2881'. With a real altitue of 3700' ish, we were now less than 1000' from the obstacle - hence the pull up.
With everything in aviation, don't assume - check. I will be asking if altitudes are temp corrected from now on!
Very, very interesting. I shall be extra careful going into PEK in two days time although I don't know what the Cantonese is for "do you correct for low temperature?"