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Can't Change AP pitch

Scheduled Pinned Locked Moved F28 Professional
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  • O Offline
    O Offline
    OwlInFlight
    wrote on last edited by
    #1

    I'm having a major problem trying to change my pitch in AP. I have the Honeycomb Alpha/Bravo. In Pitch mode the aircraft will not respond to commands to pitch down so I can speed up to 250 kts. The wheel just rolls right back to the same position it was in. It doesn't matter if I use the trim wheel on the Bravo or the control on the center panel. Using GPS nav could be a factor, but I hadn't tried it in VOR mode.

    MarkM 1 Reply Last reply
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  • MarkM Offline
    MarkM Offline
    Mark JF Staff
    replied to OwlInFlight on last edited by
    #2

    @owlinflight

    If you have Autopilot engaged with PITCH mode, you can adjust pitch using the blue PITCH control switch on the Autopilot Controller on the aft pedestal. That is the only way pitch can be adjusted in PITCH mode and the elevator trim wheel will have no effect.

    The PITCH control on the autopilot controller can also be controlled using the following MSFS control assignments:

    INCREASE AP PITCH HOLD REFERENCE
    DECREASE AP PITCH HOLD REFERENCE

    I personally have those assigned to the white switch on the right side of my Honeycomb Bravo and find it to feel very natural.

    Mark - Just Flight

    Just Flight Development Assistant

    O 1 Reply Last reply
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  • O Offline
    O Offline
    OwlInFlight
    replied to Mark on last edited by OwlInFlight
    #3

    @mark The problem is that, even using the switch on the AP Controller, pitch did not change.

    Edit: After binding it to the Bravo flaps switch like you did I got it to work.

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  • M Offline
    M Offline
    Melon
    wrote on last edited by
    #4

    Is it intended for the pitch to snap back? I have the AP pitch reference set to the thumb buttons on my Alpha yoke and during climb outs when I set it initially to pitch hold and try to use those binds to push the nose down it snaps back up to what it was previously and does not hold the desired pitch so you cannot increase speed as per the tutorial/checklist.

    J 1 Reply Last reply
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  • J Online
    J Online
    JetNoise
    replied to Melon on last edited by
    #5

    seeing the same issue, pitch seems to snap back, looking at the trim wheel also ..
    Same hw bindings on my Alpha

    M 1 Reply Last reply
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  • MartynM Offline
    MartynM Offline
    Martyn JF Staff
    wrote on last edited by
    #6

    Can you submit tickets to the support team so that we can investigate this further and see if we need to make any changes to better support the Honeycomb hardware? https://www.justflight.com/support

    Martyn - Development Manager

    J M 3 Replies Last reply
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  • J Online
    J Online
    JetNoise
    replied to Martyn on last edited by
    #7

    @martyn I'll do some more testing on my side, before i raise hell ;-)

    Cheers
    Oliver

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  • M Offline
    M Offline
    Melon
    replied to JetNoise on last edited by
    #8

    @jetnoise I'm sitting here on the ground playing with it... are you using the GPS unit? I just tried without the GPS unit and with the GPS and it seem like it might be an issue when using the GPS unit. Because when not using the GPS unit I was able to move the pitch trim with the pitch hold reference without it immediately snapping back to whatever. However when the GPS unit was enabled it immediately started snapping to what it was before when using the pitch trim switch/binding.

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  • M Offline
    M Offline
    Melon
    replied to Martyn on last edited by
    #9

    @martyn I think it might be to do with the GNS being enabled. Shall submit a bug report though.

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  • J Online
    J Online
    JetNoise
    replied to Melon on last edited by
    #10

    @melon great finding. Actuall i had the GPS "installed" but was doing the tutorial VOR/VOR.
    I'll check on my next flight ... (later today)
    Oliver

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  • J Online
    J Online
    JetNoise
    replied to Martyn on last edited by
    #11

    @martyn is that of any interest maybe
    Discussion about deactivating the gns unit

    https://discord.com/channels/750764704175226992/1040727793736102000/1128970130915856434

    Oliver

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  • M Offline
    M Offline
    Melon
    replied to JetNoise on last edited by Melon
    #12

    @jetnoise Yeah, it definitely seems to be because of the GNS. Just did a flight without it and the pitch controls worked perfectly.

    MartynM 1 Reply Last reply
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  • MartynM Offline
    MartynM Offline
    Martyn JF Staff
    replied to Melon on last edited by
    #13

    @melon Thanks for confirming. We are investigating.

    Martyn - Development Manager

    1 Reply Last reply
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  • T Offline
    T Offline
    taguilo
    wrote on last edited by
    #14

    Just a comment, besides INCREASE/DECREASE AP PITCH HOLD control assignments, INC/DEC VERTICAL SPEED can be used as well to control pitch, for those that probably have a controller already mapped to these events.

    Tomas

    1 Reply Last reply
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  • W Offline
    W Offline
    Wothan
    wrote on last edited by Wothan
    #15

    @Martyn
    With the GNS 530 NOT selected, I still have issues with pitch modes.

    After takeoff setting AP on and controlling pitch works fine.
    Having an altitude selected, makes the AP switch from Pitch to HT, but while it tries to level out, it keeps climbing through the set altitude.

    Changing back to Pitch mode, the stabiliser seems to be stuck, and I can no longer change the pitch - the elevator trim wheel simply snaps back.

    I have tried to disable the WT GNS 530 in the Panel.cfg file, but with no change.

    Edit:
    On my Stream Deck I can monitor the in-sim (Asobo) Autopilot settings.

    When I engage the F28 AP, then the following in-sim (Asobo) AP functions are set to ON: AP Master & Level mode.
    The F28 AP shows Roll & Pitch, and I can set the Pitch with the switch on the Pedestal or by pressing the V/S Inc./Decr. switches on my Stream Deck.

    Once the F28 comes close to the Altitude preset, the in-sim AP changes to V/S and the V/S value decrease until it reaches the set altitude, where it changes to ALT hold mode.
    But the F28 just keeps climbing and the Elevator trim wheel seems to be stuck, or rather snaps back to it´s initial position when I use either the Pitch switch (or V/S Incr./Decr. switches on my Stream Deck).

    I wonder if any 3rd party addon can affect the AP.
    I have alot of Aircraft addons, but most uses the standard (now WT) GPS units, PMS 750 or TDS GTNXi.

    Edit 2:
    I tried to disable all my addon aircraft in the Community folder to rule out any incompatibility with any of those , but to no avail.

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  • W Offline
    W Offline
    Wothan
    wrote on last edited by
    #16

    Just a thought...

    Could the PMS GTN750 or TDS GTNxi 750 cause Autopilot issues ?

    Also - is the F28 using standard MSFS AP functions, or are some of them custom coded ?
    The reason is that when I look on which MSFS AP functions are actve on my Stream Deck, I wonder why the LEVEL mode always seems active.
    Also when I use IAS mode, once I get near the Preset altitude, the MSFS AP switches from IAS to V/S mode with decreasing V/S as it comes closer tol the Preset altitude and then goes to ALT mode.
    But while the MSFS AP indicates to be in ALT mode and V/S is set to 0 ft/min on my Stream Deck, the Aircraft keeps climbing.

    T 1 Reply Last reply
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  • T Offline
    T Offline
    taguilo
    replied to Wothan on last edited by
    #17

    @wothan Yes, the autopilot uses custom code in the process of leveling off towards an altitude capture, both in PITCH and IAS modes. This is to smooth the capture form an otherwise different behavior with or without GNS selected. However, once altitude has been reached, the AP is totally controlled by MSFS ALT HOLD mode. It seems in your case there might be some controller mapping issues. We are going to investigate that.

    W 1 Reply Last reply
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  • W Offline
    W Offline
    Wothan
    replied to taguilo on last edited by
    #18

    @taguilo
    Note that I´m not using any controller for the AP other than AP ON/OFF Toggle on my Yoke and the V/S Incr./Decr. on my Stream Deck.
    In the start I used the blue Pitch switch on the Pedestal, but with the same issue.

    I have only tried the F28 4000, and will try one of the other versions this afternoon.

    So I´m pretty sure that this isn´t a controller mapping issue, but rather some backround app intervening - or a F28 bug.

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  • b3lt3rB Offline
    b3lt3rB Offline
    b3lt3r
    wrote on last edited by
    #19

    I was in a state today where pitching up would work while I held the switch but as soon as I let go it reverted. I resolved by cycling the AP once. Aside from that it's been working fine for me.

    M 1 Reply Last reply
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  • M Offline
    M Offline
    Melon
    replied to b3lt3r on last edited by
    #20

    Was one of the 'manual' fixes this update resolving the pitch snapping issue?

    MartynM 1 Reply Last reply
    0

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