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Old 13th Aug 2013, 09:27
  #19 (permalink)  
enicalyth
 
Join Date: Jul 2004
Location: Sydney NSW
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Ahh, a B744
I just happen to have an example before my eyes on my PC.

Case 1 is M0.825; case 2 M0.845 and poses a fictitious instantaneous step climb FL330-350 at 341560kg. The “econ” specific air range computes as 43nm/tonne; "LRC" choice reduces to 42nm/tonne.
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