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Old 1st Sep 2009, 08:51
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chinny
 
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QNH vs SAS
HI,

Would like some clarrification on the correct proceedures from an ATCO please.

When climbing out,with a high transition altitude say 17000 and the controller gives you a FL to climb to and youre at say 4000ft-what is the correct thing to do-set SAS and climb to FL or remain on QNH til passing TL? the same goes for the descent from say FL370,high T Alt ,17000 again, to 2500ft.

I know what i do but have entered into a "discussion" about it and wanted an upto date definitive.If you can could you provide a ref then that would be great.

thanks

VTSP
chinny
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