PC-24 autothrottle is not working properly, unable to maintain speed

ISSUE DESCRIPTION

Description of the issue:

On the PC-24, when using A/T, it keeps oscillating between full power and idle to maintain a speed target

If applicable, which aircraft is experiencing this issue:

PC-24

[PC Only] Did you remove all your community mods/add-ons? If yes, are you still experiencing the issue?

FREQUENCY OF ISSUE

How often does this occur for you (Example: Just once, every time on sim load, intermittently)?

REPRODUCTION STEPS

Please list clear steps you took in order to help our test team reproduce the same issue:

  1. Fly PC-24
  2. Engage A/P in HDG and ALT HOLD, and A/T to maintain 280 kts
  3. Observe engine power oscillation

YOUR SETTINGS

If the issue still occurs with no mods and add-ons, please continue to report your issue. If not, please move this post to the User Support Hub.

What peripherals are you using, if relevant:

Not relevant

[PC Only] Are you using Developer Mode or have you made any changes to it?

no

[PC, MSFS 2020 Only] Are you using DX11 or DX12?

[PC Only] What GPU (Graphics Card) do you use?

Not relevant

[PC Only] What other relevant PC specs can you share?

Not relevant

MEDIA

Please add a screenshot or video of the issue occurring.

[END OF FIRST USER REPORT]


:loudspeaker: For anyone who wants to contribute on this issue, Click on the button below to use this template:

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Do you have the same issue if you follow the OP’s steps to reproduce it?
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Provide extra information to complete the original description of the issue:
• still around as of SU1 update. i would say it’s not quite going all the way to idle but the throttle is definitely oscillating between too much thrust and too little

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Do you have the same issue if you follow the OP’s steps to reproduce it?
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Do you have the same issue if you follow the OP’s steps to reproduce it?
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If relevant, provide additional screenshots/video:
• MSFS 2024 SU2 Patch Applied

SU2 Update applied
Nvidia Driver Updated to May 12 release.
4090 Card
14900K CPU
64GB Ram

PC24 Auto Throttle Oscillates between 92 and 31% when trying to maintain speed.

Screen Shot 1:

Screen Shot 2:

Throttle is set to 240 as per next screen shot:

The Throttle is also showing 0% all the time, strange.

This auto-throttle issue is actually similar on the PC-12. It’s just much more noticeable on the PC-24. Could it be an issue with the Honeywell FMS instead of the PC-12/PC-24 itself?

Could really use some attention now that we’re at SU3 already.

Yes, this happens to me too. Drains the fuel and the oscillations on the MFD’s “FF” and “END” values are almost comical.

Thank you for the bug report.

We have created an internal ticket to see if our team already has this logged, and if not they will attempt to reproduce the issue and create a new bug report. This item is now marked as feedback-logged. If there is an existing bug report or one is created, we will move this thread to bug-logged.

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Still haven’t fixed the autot hrottle issue…

Same thing for me with the Citation Longitude C700.