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Thread: Flight below optimum altitude
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Old 18th April 2006 | 00:05
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karimi
 
Joined: Feb 2005
Posts: 30
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From: france
No change in TAS if above tropopause (tropopause definition: layer of more than 2000m when the temp gradient is less than 2°/1000m) so flight time might be the same at same mach if below optimum
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