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Old 2nd Oct 2022, 11:45
  #63 (permalink)  
dixi188
 
Join Date: Apr 2004
Location: Dorset UK
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IIRC a 300/400/475 series 1-11 could get up to 35000ft ok and you could get the fuel flow back to around 2000lb/hr per engine at Mach .72, so with 24800lbs in the tanks at start and using en-route re-filing a 4.5 hr flight would be possible.
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