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777 remaining fuel on board and alternate fuel

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    777 remaining fuel on board and alternate fuel

    Good Afternoon

    I was wondering if someone out there could help me with a couple of questions. Since the manuals are no longer included, i am having a hard time finding this information

    what is the remaining fuel you should have on board when you park at the gate at the end of a trip

    how do i calculate alternate fuel for both domestic and international flights


    thanks everyone for your help with this

    13ifs40
    Ian F Snow Professional Gambler, Airplane spotter and part time simmer

    #2
    Hello Ian I don't think the FCOM will tell you your fuel remaining

    There is plenty of material in the public domain and on here some rather long threads on the legal requirements, should be easy to find with a search


    Adrian Howe

    Comment


      #3
      Basically make sure you have enough fuel to fly to your destination, to fly to your most distant alternate, and an additional 10% of your flight time in fuel (2 hours would be 12 extra minutes of fuel, or 45 mins extra depending on which regulations you use). You can look up fuel requirements but in the real 777-200ER, if I were to divert I’d never want to land with less than 10,000-12,000lbs of fuel.

      Normally we land with much more depending on our planned alternate and fuel regulations. Sometimes around 35,000-40,000lbs!
      Regards,

      Aaron Zylman

      Comment


        #4
        WOW thanks Aaron good to hear from a real pilot


        13ifs40
        Ian F Snow Professional Gambler, Airplane spotter and part time simmer

        Comment


        • vadriver
          vadriver commented
          Editing a comment
          ian

          what flight dispatch planner are you using to calculate fuel for planned, alternates, holding, tankering etc.

          from that you can calculate reserves/remaining required for the forecast evolving phases / scenarios.

        #5
        I recommend PFPX.
        Regards,

        Aaron Zylman

        Comment


          #6
          Originally posted by 13ifs40 View Post
          Good Afternoon

          I was wondering if someone out there could help me with a couple of questions. Since the manuals are no longer included, i am having a hard time finding this information

          what is the remaining fuel you should have on board when you park at the gate at the end of a trip

          how do i calculate alternate fuel for both domestic and international flights


          thanks everyone for your help with this

          13ifs40
          Ian,

          The minimum fuel you should land with is the fuel required to reach your alternative airport plus holding fuel for 30 minutes (EASA) or 45 minutes (FAA). This is the value you should enter as Reserve Fuel in the FMC. If you aren't able to touch down with reserve fuel remaining you must divert.

          Clearly if you've planned the flight properly you will actually land with a lot more fuel than this as Aaron described. What you end up with at the gate will be a little less of course.

          I use Simbrief for flight planning. It's free, very user friendly and is reasonably accurate. Less good for ETOPS planning. It will calculate ETOPS fuel and en route alternates but does not currently support redispatch. If you are interested in the full flight planning process and want airline levels of accuracy in terms of fuel burn PFPX is well recommended.
          Last edited by Kevin Hall; 01Dec2022, 13:29.

          Comment


            #7
            HI all well currently i am in crunch time at work and will not fly at all until around jan 6th, but prior to that i tried to use simbrief but i find there over ocean trips to be a bit off to say the least

            a bunch of folks mention PFPX but i have not had the time to do a complete research into it yet

            So i was just getting the route from flightaware if it was USA to foreign or when it was foreign to USA i would make my own route using skyvector then i would fill in the fuel and make sure i would at least land with 15 + thousand pounds or more in the tank. I have heard from alot of folks on various forums that you can find FCOM or FCTM online but i am real skittish about what i download off the net since i just got a brand new computer and don't want to damage or destroy it downloading something

            thanks again folks for the help

            13ifs40
            Ian F Snow Professional Gambler, Airplane spotter and part time simmer

            Comment


              #8
              Originally posted by 13ifs40 View Post
              HI all well currently i am in crunch time at work and will not fly at all until around jan 6th, but prior to that i tried to use simbrief but i find there over ocean trips to be a bit off to say the least

              a bunch of folks mention PFPX but i have not had the time to do a complete research into it yet

              So i was just getting the route from flightaware if it was USA to foreign or when it was foreign to USA i would make my own route using skyvector then i would fill in the fuel and make sure i would at least land with 15 + thousand pounds or more in the tank. I have heard from alot of folks on various forums that you can find FCOM or FCTM online but i am real skittish about what i download off the net since i just got a brand new computer and don't want to damage or destroy it downloading something

              thanks again folks for the help

              13ifs40
              You are missing the key point everyone has explained. There is no one correct amount of remaining fuel. Simbrief will do international routes just fine for a beginner but you got to be using the correct aircraft profile. It's fine to plan a route with skyvector (I do that often) and then plug that route into Simbrief. Your fuel remaining will be, assuming international US flag rules, the amount of fuel required to fly from the destination to an alternate PLUS at least 30 minutes of contingency. Alternate plus 30 minutes. Whatever that is. It is realistic to have more because your block fuel (the amount of fuel you put in the tanks at the origin) will include taxi fuel, trip fuel, alternate fuel, 30 minutes fuel and at least 10% of the trip fuel; therefore, when you land you will also have the amount of that 10% that you didn't have to burn to get there.

              Stop looking for the one correct amount and start planning your route.

              PFPX is much more powerful than Simbrief but it is complicated. I suggest you stick to Simbrief until you get some time in your logbook.
              Dan Downs KCRP
              i7-10700K 32GB 3600MHz 3080Ti

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