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Old 11th January 2009 | 16:03
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VShadow
 
Joined: Nov 2007
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From: Spain
Tropopause Height and Optimum Alt in the FMC A320

Hi Guys,

Sometimes on some flights you will have different tropopause heights on your SIG charts, now entering it into the FMC depending on the weight seems to affect your optimum altitude calculated by the FMC, but how does it behave if your route is crossing different tropopause heights. and how much really does the entering of the tropopause height into the FMC affects performance??
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