787 on autopilot just turns hard right and then crashes into the ground

Bug Reporting Hub Aircraft & Systems
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1

Setting a flight plan in the World map. After take-off I’m activating the AP with LNAV, IAS mode is on altitude is set to 41000 and it doesn’t matter if I’m using V/S or FLCH, same result. Then the plane does a hard right and goes in circle until it loses altitude (often trim is 100% for whatever reason) and crashes.

Same happens when I just set a heading. It ignores it, goes to the right, puts the trim too 100% and despite being instructed to increase altitude I guess it cannot handle it any more and goes down.

2

I’m experiencing the same issue with the a320 as well. It is not listening to the NAV.

3

increase the deadzones on your controller axes. Autopilot is very sensitive to jitter in the axes…

4
  1. Set your flight model to Modern,
  2. Turn off all assists. They should be hard/true to life.
  3. Assign some deadzone to your control sensitivity. 5-10% should do it.
5

Having the exact same issue, no matter what I have it do it won’t follow my path or heading.

6

This happened to me a couple times and I was able to correct it by disconnecting autopilot, hand flying back onto my flight path, then reconnecting AP. Afterwards I was able to prevent it from happening by unplugging my yoke during long cruises so I think it may have been related to bumping the yoke inadvertently.

BUT see here, there appear to be more widespread trim/flgiht control issues in this patch: UPDATE 2 (1.12.13.0) Trim and Flight Control Issues - All Aircraft

7

Yes.. that’s because your yoke is feeding the sim with “phantom inputs”. That’s why unplugging the yoke could prevent the issue from happening because the “phantom input” no longer being feed by the yoke.

That’s why my recommendation is to add deadzone into your sensitivity controls. So the sim can ignore a portion of those “phantom inputs” as invalid input, ignoring it which will prevent the autopilot from being overridden by these “phantom inputs”.

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