PPRuNe Forums - View Single Post - Jet goes down on its way to Medellin, Colombia
Old 10th Dec 2016, 02:18
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AerocatS2A
 
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Originally Posted by unworry
@Dave, you are of course correct, but the infographic is an interesting representation of recent flight history benchmarked against the duration of the final flight.

Would anyone care to elaborate on the range empty?
Performance manual only has distances up to 1800 NM, which at ISA, landing weight of 30,000 kg (lower weights not provided), and cruise at FL350, would use 8290 kg. About a 1000 kg reserve available, but subtract 350 kg or so for start, taxi, approach, and landing.

To put it another way, a fuel plan for a 1650 NM flight empty would look something like this:

Start/taxi: 150 kg
Burn: 7590 kg
Approach: 143 kg
Total required: 7883 kg

Margin available for reserves = 1477 kg

You wouldn't run out of fuel but I don't think that is enough margin for a typical alternate + reserves.
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