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BMM389EC
25th Apr 2006, 07:41
Does anyone know what , if any, temperature or wind corrections are covered in the published figures?
Cheers

Gufo
26th Apr 2006, 17:45
As far as I know, the only factor taken into account is Qnh=960hPa.

In fact, it's recommended somewhere that YOU do consider low temperatures or high winds kickin' up when flying close to large mountains, hence reducing the local pressure due to Venturi effect.

That's theory, at least.

Anyway, I think driftdown policies and tables within most airlines will take into account some headwind and low temp.

Cheers :)

alf5071h
26th Apr 2006, 19:44
Altimeter corrections; ICAO PANS-OPS Vol 1 Doc 8168 Part 3 Chapter 4. (http://dcaa.slv.dk:8000/icaodocs/Doc%208168/) The text starts on Page 242 and the tables are on Page 245.