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Old 1st January 2009 | 10:41
  #8 (permalink)  
BRS_flyer
 
Joined: Mar 2007
Posts: 114
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From: Europe
ISA at FL410 is -56.5
OAT at FL410 = 206.8k (assuming LR of 1.98 per 1000') +10 = 216.8k
Rookie mistake!!
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