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Taxiing on 1 engine procedure question

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    Taxiing on 1 engine procedure question

    I recently flew to Jamaica IRL. At first I didnt realize we were taxiing on 1 engine then as we got closer to the runway I heard the other engine start. I didnt realize pilots sometimes taxi with just 1 engine to save fuel. My question is this.

    When starting the engines, you need both packs off and the bleed on. So if I wanted to replicate this in MSFS, do I start the 1 engine then turn the Packs back on and the Bleed off then begin taxiing. While taxiing to start the other engine do I need to turn the packs back off and the bleed on to start engine 2 or can I leave the packs on and bleed off since engine 1 is already running. Or do u just leave the packs off and bleed on while taxiing until im ready to start engine 2?
    Phillip Palmer

    #2
    Single Engine Taxi Out is not approved in the 737, Boeing never certified it for it...
    Some other types are certified for it however, most noticably the A320 and the 747. The procedure can be found in the FCOM, Supplementary Procedures for the type in question.

    Comment


    • MeatServo
      MeatServo commented
      Editing a comment
      Boeing has provided operators with guidelines for single engine taxi out.

    • seatbackpocket
      seatbackpocket commented
      Editing a comment
      I can't remember the last SWA flight I took that wasn't single engine taxi out.

    • Minien
      Minien commented
      Editing a comment
      This is incorrect. Several carriers have adopted this practice into their SOP.

    #3
    Yes my airline we do single engine out all of them for the -700 and -800. To configure preferred engine to start is 2 and it’s packs Auto, isolation valve closed. When ready to start L pack off start engine 1
    Last edited by Supersix2; 06Aug2022, 15:28. Reason: As Yoshua has pointed out if anyone didn’t know that by my short hand -7 means -700
    James Siems
    -600, -700, -800

    Comment


    • cpalmer41
      cpalmer41 commented
      Editing a comment
      Awesome! Thanks!!

    • Yoshua
      Yoshua commented
      Editing a comment
      It's 737-700*

    • RoDuSu
      RoDuSu commented
      Editing a comment
      It's perfectly acceptable to refer to the 737-700 and 737-800 as the -700 and -800 when you're specifically talking about those types, which this discussion is.

    #4
    You can single eng taxi in the guppy. We do it at my airline.

    Start Eng 2 first.
    Once it’s running, configure the pneumatic panel with the Packs On, Isolation Vlv Closed, Engine Bleeds 1 and 2 on, and APU bleed on. If in the 800 or 900 leave the Trim Air switch off until after both engines are started.

    When ready to start Eng 1, turn off the left pack and then start the engine. You can leave the R Pack running off engine 2 with the iso valve closed while you start engine 1 with the APU Bleed air. Once Eng 1 is running you can configure the pneumatic panel as normal. Don’t forget to turn on both Engine driven generators, turn off the APU, and then turn the Trim Air Switch to On.

    In the PMDG 73 it’s pretty difficult to do all this single pilot while taxiing out for takeoff. Also, unless you happen to be light weight, at least below max landing weight, it takes way to much power to get the plane to taxi speed.
    Loren Gogins
    B737
    E170/E190

    Comment


    • cpalmer41
      cpalmer41 commented
      Editing a comment
      Awesome! Thanks for all the details. I cant wait to give this a try on my next flight! Im hoping oneday asobo comes out with shared cockpit so it would be easier to get everything done while taxiing.

    #5
    Originally posted by Emi View Post
    Single Engine Taxi Out is not approved in the 737, Boeing never certified it for it...
    Some other types are certified for it however, most noticably the A320 and the 747. The procedure can be found in the FCOM, Supplementary Procedures for the type in question.
    A 747 taxiing on a single engine?
    Captain Kevin

    Kevin Yang

    Comment


      #6
      Originally posted by Captain Kevin View Post
      A 747 taxiing on a single engine?
      He didn’t mean that and you know he didn’t mean that.
      Jordan Collins

      Comment


        #7
        Originally posted by fakeflyer737 View Post
        He didn’t mean that and you know he didn’t mean that.
        I'm not sure what other type he's referring to, then, since he said in his previous sentence that the 737 wasn't approved for it. And I realize several people are saying it is, in fact, approved for it, but that's beside the point.
        Captain Kevin

        Kevin Yang

        Comment


          #8
          Originally posted by Emi View Post
          Single Engine Taxi Out is not approved in the 737, Boeing never certified it for it...
          Some other types are certified for it however, most noticably the A320 and the 747. The procedure can be found in the FCOM, Supplementary Procedures for the type in question.
          I belive it's approved manouver, if customers are willing to pay for seto certification i'm pretty sure beoing without hesitation would apply and certify such manouver.

          https://www.youtube.com/watch?v=7-MGcvyBpfk
          Here is a video from tuifly belgium.
          Matthew Chalupniczak

          Comment


            #9
            We single engine taxi 737s very regularly. It's not only approved but recommended. This is especially true in the Max, when engine starts can take considerably longer (the Max also taxis much better on a single engine, pretty well up to max gross.) Single engine taxis get the plane moving sooner and free up the gate and alleyway for other traffic.
            Andrew Crowley

            Comment


              #10
              Interesting, I stand corrected. As the saying goes: "If you think you reached the point where you don't learn anything new anymore, quit flying altogether."

              Comment


                #11
                Originally posted by Captain Kevin View Post
                I'm not sure what other type he's referring to, then, since he said in his previous sentence that the 737 wasn't approved for it. And I realize several people are saying it is, in fact, approved for it, but that's beside the point.
                I believe Emi may have meant 2 engine taxi out on the 747. Engines 1 and 4 running, demand pumps on for 2 and 3. BA trialled it years ago. It was certainly common to shutdown engine 3 taxiing in.

                Comment


                  #12
                  https://www.youtube.com/watch?v=7-MGcvyBpfk this video depicts an SETO (Single Engine Taxi Out) departure including the specific amended checklists. In this case the operator is TUI.
                  Itamar Mazor

                  Comment


                  • Ephedrin
                    Ephedrin commented
                    Editing a comment
                    Not to confuse with Single Engine Take Off… Oh dear abbreviations in aviation 🤪

                  #13
                  I usually taxi out on the APU thrust alone....I don't understand why all you guys waste fuel running the main engines when the APU thrust can taxi her just fine.

                  Originally posted by Kevin Hall View Post

                  I believe Emi may have meant 2 engine taxi out on the 747. Engines 1 and 4 running, demand pumps on for 2 and 3. BA trialled it years ago. It was certainly common to shutdown engine 3 taxiing in.
                  Again...you guys are doing it all wrong....the 747 can also taxi on the thrust of the APU. I do it all the time!

                  You just press Y to activate ATTM (APU Taxi Thrust Mode), and use your keyboard arrow keys to taxi her.
                  I can't believe all you "real" pilots out there don't know of this procedure.🤔
                  Regards, Steve Dra
                  Click here to download my P3D, FSX, 2004 paints at Avsim
                  Get my paints for MSFS planes at flightsim.to here

                  Comment


                  • Ephedrin
                    Ephedrin commented
                    Editing a comment
                    LOVE it 🤣🤣

                  • cpalmer41
                    cpalmer41 commented
                    Editing a comment
                    As high as these gas prices are, I’ve considered having the tug pull me all the way to the runway then start the engines as were ligned up and ready to go.

                  #14
                  No better place to find out that your engine start has a problem than at the hold with 4 in front and 4 behind you with your slot becoming history.
                  Paul Adrian

                  Comment


                  • cpalmer41
                    cpalmer41 commented
                    Editing a comment
                    Whoa whoa whoa! Here at Palmer Airlines, we dont have maintenance issues sir! We get ya there quick, fast and in a hurry!

                  #15
                  If you're flying the MAX it would take the entire taxi just to start up the second engine.


                  Capt. Jason Wannamaker - ATPL B737
                  https://www.twitch.tv/captainbandages/

                  Comment


                  • Stearmandriver
                    Stearmandriver commented
                    Editing a comment
                    Sometimes! There are times we'll start rolling on one engine and immediately start motoring the other... by the time it lights and you have your three minutes, it can get close 😁.

                  • MeatServo
                    MeatServo commented
                    Editing a comment
                    They’re always slower when you have a flow time to make.

                  #16
                  Originally posted by MeatServo View Post
                  If you're flying the MAX it would take the entire taxi just to start up the second engine.
                  Takes forever to start them if they're not cooled down, doesn't it? I saw a MAX 8 blocking a taxiway here the other day, the following aircraft had to be maneuvered around the parking stands because it would have taken too long to keep them waiting there.

                  Comment


                  #17
                  Originally posted by MeatServo View Post
                  If you're flying the MAX it would take the entire taxi just to start up the second engine.
                  i know the engines in the MAX are extremely different than the ngx's, what takes it so lon got start up?
                  Jason Saucier

                  Comment


                  • MeatServo
                    MeatServo commented
                    Editing a comment
                    Check the link I posted above.

                  #18
                  Hi there, thanks for sharing that video link with us. It is really a great video and I love it. I was actually searching for the https://domeanessay.com/edubirdie-co...tudent-demand/ website online because I want to take help from Edubirdie essay writers but before that, I want to make sure they are trustworthy. When I was searching for that link online, I am glad I found your post as well.



                  Arnold Grace
                  Last edited by ArnoldGrace; 05Sep2022, 07:07.

                  Comment


                    #19
                    Great video for single engine taxi. I am surprised that airport has no taxiways to the end of the runway and a taxi out on the active runway s always required. I guess they only have a few flights a day there
                    Paul Gugliotta

                    Comment


                      #20
                      Originally posted by Steve Dra View Post
                      the 747 can also taxi on the thrust of the APU. I do it all the time!
                      Wow, that's great.

                      😂😂😂😂😂😂😂
                      Vlad Tepes

                      Comment


                        #21
                        I wonder how Airbus managed to get their engines to motor at the same time. I think the APU is strong enough to provide the required amount of bleed air for it.
                        Best,
                        Nick Harder

                        Comment

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