February 11, 20197 yr Quick question. Who actually decides and has final say on the landing fuel, which for clarity I presume will be the level set in reserve? Is the reserve the assumed normal landing fuel level or is the reserve on top of that? By who I mean does the flight crew or the airline dictate this figure? Thanks. SO much interesting info available from you guys here! Russell Gough SE London
February 11, 20197 yr 7 hours ago, sloppysmusic said: Quick question. Who actually decides and has final say on the landing fuel, which for clarity I presume will be the level set in reserve? Is the reserve the assumed normal landing fuel level or is the reserve on top of that? By who I mean does the flight crew or the airline dictate this figure? Thanks. SO much interesting info available from you guys here! There will be more fuel on top of your final reserve most likely. There are lost of other considerations to take extra fuel i.e. weather, delays at your destination, possible holding, maybe holding on the ground at your origin. All this is determined by what flight planning tool is using, the reserve fuel is a set value I would imagine for what ever regulatory body the flight is being operated under. 9 hours ago, Captain Kevin said: That actually depends on the type of flight you're flying. If you're flying a flag/international flight, yes. If you're flying under US Domestic rules, it's a little difference since you wouldn't need the 10% trip time. All you would need to carry is trip fuel, fuel to the most distant alternate, and 45 minutes of holding fuel. Of course, if you're flying under EASA regulations, it's a little different. But like Kevin said in the U.S. this would be the absolute minimum they could legally land with. best regards, Austin MacDaniels
February 11, 20197 yr 1 hour ago, nitsaw said: There will be more fuel on top of your final reserve most likely. There are lost of other considerations to take extra fuel i.e. weather, delays at your destination, possible holding, maybe holding on the ground at your origin. All this is determined by what flight planning tool is using, the reserve fuel is a set value I would imagine for what ever regulatory body the flight is being operated under. But like Kevin said in the U.S. this would be the absolute minimum they could legally land with. best regards, Austin MacDaniels Austin that's very helpful thanks. So we START with the reserve and then add on divertion and holding time plus taxi both ends to the fuel planned landing level, then of course add on trip fuel? I can see how landing with 10% fuel capacity could be normal now. 🙂 Russell Gough SE London
February 11, 20197 yr 1 hour ago, sloppysmusic said: Austin that's very helpful thanks. So we START with the reserve and then add on divertion and holding time plus taxi both ends to the fuel planned landing level, then of course add on trip fuel? I can see how landing with 10% fuel capacity could be normal now. 🙂 If you are using PFPX or SimBrief it’s going to give you all the numbers you need! Every flight is going to be different. PFPX gives you a good break down of your fuel right at the top of the flight plan. I use this to cross check my fuel once I program the FMC to see whether or not it’s an amount I’m comfortable landing with. You have to take each flight in a case by case basis. Kyle from PMDG did some really good tutorial videos on PFPX for flight planning a few years back. https://youtu.be/zX0r83OFdAM Best Regards, Austin MacDaniels
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