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10 Left AFT Fuselage AFT outflow valve Water drains, service doors, waste vents Air demand pump exhausts (2) The only non-explicit hint in the flight manual is in the exterior inspection section above; searching the manual for "air demand" yields only one other result: Sec. 6.2 Page 1 [...] Air Conditioning Packs [...] Pack output is ...


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What does the graph show? The graph plots the average fuel required per distance as a function of the total flight distance. It does not show fuel flow rate as a function of time during the flight. Why is it going up towards shorter flights? For short flights (less than ~2500 NM for the 777), the takeoff and climb to cruise altitude are a larger fraction of ...


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