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ILS not capturing GS

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    ILS not capturing GS

    Whenever I use ILS, sometimes it works fine, and sometimes it only captures the localizer and never captures the gs and after a while of no gs being captured, the plane starts doing weird things like pulling up, accelerating and I end up having to turn ap off and fly it myself. What could I be doing wrong?
    Jack Sawtell

    #2
    Are you trying to capture the GS from above? I’m not sure with the 737 whether the system logic lets you do it or not but I suspect not. Either way, it’s generally frowned upon because it can lead to a situation where you’re endlessly chasing the GS and end up with a completely unstable approach.
    Flight Sim Guides YouTube Channel

    John Price

    Comment


    • FHU59
      FHU59 commented
      Editing a comment
      You can select that in the options, intercept from above allowed yes or no. I think default is no.

    #3
    Originally posted by Jalice11 View Post
    Whenever I use ILS, sometimes it works fine, and sometimes it only captures the localizer and never captures the gs and after a while of no gs being captured, the plane starts doing weird things like pulling up, accelerating and I end up having to turn ap off and fly it myself. What could I be doing wrong?
    all assists in MSFS off?
    Fred Huisman / EHAM

    Comment


      #4
      Originally posted by rondon9898 View Post
      Are you trying to capture the GS from above? I’m not sure with the 737 whether the system logic lets you do it or not but I suspect not. Either way, it’s generally frowned upon because it can lead to a situation where you’re endlessly chasing the GS and end up with a completely unstable approach.
      You need to be within .17° of the GS (half a dot) for 2 seconds for the GS to capture. If you're above, below or right on it makes no difference.
      We intercept from above regularly, it's no problem if done correctly.
      I'll have a video up on the topic soon, currently it's in pre-view for channel members and will become public in a week or so.

      Comment


        #5
        Originally posted by Emi View Post

        You need to be within .17° of the GS (half a dot) for 2 seconds for the GS to capture. If you're above, below or right on it makes no difference.
        We intercept from above regularly, it's no problem if done correctly.
        I'll have a video up on the topic soon, currently it's in pre-view for channel members and will become public in a week or so.
        What is your YT link? I'd like to subscribe sir. Thank you.
        Jack Sawyer
        25GA

        Comment


          #6
          Originally posted by JackSwyr View Post
          What is your YT link? I'd like to subscribe sir. Thank you.
          Search for 737NG Driver on YouTube.
          Captain Kevin

          Kevin Yang

          Comment


            #7
            Originally posted by Captain Kevin View Post
            Search for 737NG Driver on YouTube.
            Dang, can't even post a link? I'll try to look.
            Jack Sawyer
            25GA

            Comment


              #8
              Originally posted by JackSwyr View Post

              Dang, can't even post a link? I'll try to look.
              Seriously? It took me about 15 seconds to find this link. It’s taken 2-3 times as long to post it but here you go.

              Hi and welcome to my channel! I'm a Boeing 737 pilot for a European airline and flight simulation enthusiast for many years. I've created this channel mainly to show you the new PMDG 737 for Microsoft Flight Simulator from a professional pilots perspective. It is my very first social media project and depending on how I like it I might expand it at a later point in this. Unless otherwise stated my videos are not intended as tutorials, but as demonstrations what the PMDG 737 can do when flown by a professional. For now sit back, relax and enjoy the flight! If you like my videos please consider a small donation as it's taking a lot of time and effort to create these. https://www.buymeacoffee.com/737NGDriver
              Herb Schaltegger - Father, husband, lawyer, engineer & getting too old for this $#!t. Do Not Taunt Happy Fun Ball!TM.

              Comment


                #9
                Originally posted by DrVenkman View Post

                Seriously? It took me about 15 seconds to find this link. It’s taken 2-3 times as long to post it but here you go.

                https://youtube.com/@737NGDriver
                thank you. I humbly seek forgiveness as I'm not as astute as yourself. I innocently and I guess stupidly simply asked for a link, not to be berated. Some are better at finding things than others.
                Jack Sawyer
                25GA

                Comment


                  #10
                  Be friendly to one another guys

                  Comment


                    #11
                    Originally posted by Emi View Post
                    Be friendly to one another guys
                    I'm loathe to say this but if you must know, for what it's worth, I am a special needs, handicapped person with disabilities. I simply ask questions because it's not easy otherwise.
                    Jack Sawyer
                    25GA

                    Comment


                      #12
                      Originally posted by JackSwyr View Post
                      Dang, can't even post a link? I'll try to look.
                      Given the many things I was doing at the time of typing, I would have had to pull up YouTube, go find his channel, grab the link, and post it here, and I was already in the middle of helping my friend with somebody.​ It was faster for me to just type his channel name.
                      Originally posted by JackSwyr View Post
                      I'm loathe to say this but if you must know, for what it's worth, I am a special needs, handicapped person with disabilities. I simply ask questions because it's not easy otherwise.
                      Emi wasn't directing his comment at you specifically, but in any event, I am also autistic.
                      Captain Kevin

                      Kevin Yang

                      Comment


                        #13
                        Originally posted by FHU59 View Post

                        all assists in MSFS off?
                        Yes i've got them all off
                        Jack Sawtell

                        Comment


                          #14
                          Jack,

                          Which airport / ILS runway last failed G/S capture?
                          Did you go around and try again?

                          Do the same airport(s) / ILS's that do not capture G/S always fail to capture G/S?

                          Have any screenshots of the panel?

                          A video would be very helpful.
                          Vaughan Martell KDTW PP-ASEL

                          Comment


                            #15
                            Originally posted by von View Post
                            Jack,

                            Which airport / ILS runway last failed G/S capture?
                            Did you go around and try again?

                            Do the same airport(s) / ILS's that do not capture G/S always fail to capture G/S?

                            Have any screenshots of the panel?

                            A video would be very helpful.
                            It was at HKMO runway 21 and no, it doesn't always not capture so I definitely could've done something wrong as I'm new to flight sims and especially new to ILS
                            Don't have any screenshots and I don't have a video, and i'm not sure how to get a video of it cause I don't know how to replicate the issue
                            Jack Sawtell

                            Comment


                              #16
                              This happens to me almost every time. I've been simming for years with many different aircraft and know how ILS works. Something is off, and it's not related to a specific airport as it has happened on at least a dozen different airports for me. Next time I will take a video.

                              Brian Price
                              Last edited by brianprice6; 22Jan2023, 06:24.

                              Comment


                                #17
                                Just to be certain: ILS frequency selected on both NAV radios and ILS course selected in both windows?
                                Fred Huisman / EHAM

                                Comment


                                  #18
                                  Originally posted by Jalice11 View Post

                                  It was at HKMO runway 21 and no, it doesn't always not capture so I definitely could've done something wrong as I'm new to flight sims and especially new to ILS
                                  Don't have any screenshots and I don't have a video, and i'm not sure how to get a video of it cause I don't know how to replicate the issue
                                  Hi Jack,

                                  You could do a video of each approach.
                                  Start each video 5nm before G/S intercept.
                                  Vaughan Martell KDTW PP-ASEL

                                  Comment


                                    #19
                                    Originally posted by brianprice6 View Post
                                    This happens to me almost every time. I've been simming for years with many different aircraft and know how ILS works. Something is off, and it's not related to a specific airport as it has happened on at least a dozen different airports for me. Next time I will take a video.

                                    Brian Price
                                    Brian,

                                    Have you ever done a go around to test the same ILS a second time?
                                    Vaughan Martell KDTW PP-ASEL

                                    Comment


                                      #20
                                      Originally posted by FHU59 View Post
                                      Just to be certain: ILS frequency selected on both NAV radios and ILS course selected in both windows?
                                      Yep all of that is done
                                      Jack Sawtell

                                      Comment


                                        #21
                                        Originally posted by von View Post

                                        Hi Jack,

                                        You could do a video of each approach.
                                        Start each video 5nm before G/S intercept.
                                        Alright ill try my best, thanks
                                        Jack Sawtell

                                        Comment


                                          #22
                                          Jack,

                                          Which PMDG aircraft are you testing?

                                          Have you tested any of the default MSFS aircraft?
                                          Vaughan Martell KDTW PP-ASEL

                                          Comment


                                            #23
                                            Originally posted by Emi View Post

                                            You need to be within .17° of the GS (half a dot) for 2 seconds for the GS to capture. If you're above, below or right on it makes no difference.
                                            We intercept from above regularly, it's no problem if done correctly.
                                            I'll have a video up on the topic soon, currently it's in pre-view for channel members and will become public in a week or so.
                                            Look forward to it Emi, as with all your videos.
                                            Flight Sim Guides YouTube Channel

                                            John Price

                                            Comment


                                              #24
                                              Originally posted by FHU59 View Post
                                              Just to be certain: ILS frequency selected on both NAV radios and ILS course selected in both windows?
                                              Yes for me. BTW I think the ILS situation is also complicated by problems with the Auto Throttle where it goes crazy during the approach and puts everything out of whack. This is pretty well noted in various posts.

                                              Comment


                                                #25
                                                I haven't gotten the GS to capture reliably on the 737-700 since the release of the AAU1 beta. I made a flight a couple of hours ago from KJFK in New York to KADW near Washington, DC. The flight went flawlessly until I attempted to intercept the GS during landing. The VNAV had brought me to the perfect waypoint and altitude and speed. The GS indicator and the VNAV indicator were literally on top of each other. Both were dead on target. But the GS was never actually activated and captured when I hit the APPR button. The other plane I fly regularly -- the Longitude -- doesn't suffer this problem. I've been using the 737 since its release. And I've been intercepting glide slopes for decays. I never experienced this problem until very recently.
                                                David Mills
                                                Huntington, WV

                                                Comment


                                                  #26
                                                  David,
                                                  "I haven't gotten the GS to capture reliably on the 737-700 since the release of the AAU1 beta."

                                                  Are you still using MSFS beta for your PMDG737 flights?
                                                  Vaughan Martell KDTW PP-ASEL

                                                  Comment


                                                    #27
                                                    Originally posted by David Mills View Post
                                                    I haven't gotten the GS to capture reliably on the 737-700 since the release of the AAU1 beta. I made a flight a couple of hours ago from KJFK in New York to KADW near Washington, DC. The flight went flawlessly until I attempted to intercept the GS during landing. The VNAV had brought me to the perfect waypoint and altitude and speed. The GS indicator and the VNAV indicator were literally on top of each other. Both were dead on target. But the GS was never actually activated and captured when I hit the APPR button. The other plane I fly regularly -- the Longitude -- doesn't suffer this problem. I've been using the 737 since its release. And I've been intercepting glide slopes for decays. I never experienced this problem until very recently.
                                                    Did you arm VORLOC and let it capture the localizer before arming the APP mode? I’ve found that process to reliably give me ILS capture since day 1, including flying in every build of the AAU1 beta since release.
                                                    Herb Schaltegger - Father, husband, lawyer, engineer & getting too old for this $#!t. Do Not Taunt Happy Fun Ball!TM.

                                                    Comment


                                                      #28
                                                      Originally posted by von View Post

                                                      Brian,

                                                      Have you ever done a go around to test the same ILS a second time?
                                                      Sorry I didn't get back to you sooner on this. I have changed several in configuration, technique, ac update etc and I haven't had the issue the last few flights. Not sure if that's permanent or not, but it's nice to have nonetheless.

                                                      Comment

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