Is it possible to experience mechanical failure in IF?

1

I was just wondering if it’s possible.
Today on approach on Honolulu i was in a Korean 747-8 and i was experiencing Auto pilot failure. The plane keep pitching up, i try trimming the Aircraft but nothing was working. The Aircraft was uncontrollable but i kept on Autopilot trusting the system. Upon Final i was at 3000ft and 175 knots the Plane was suddenly losing altitude the nose was still pointing up Autopilot was on 3000ft. I wasn’t stalling because Airspeed was good, No stall warning alarm. I trim the Aircraft -50% trying to push the nose down still nothing happens. At 2000ft i calibrate my controls and the moment i turned AP off the Plane just Nose dive at 8000ft a min. No chance of recovering the Aircraft

After that i jumped in a casual server trying to recreate what happened and i experience the same thing except this time i took manual control much more early. With the AP off the Aircraft was behaving normal and i did a successful visual landing.

I wondered what happened. I’ve spent 900+ hours in IF and i’ve never experienced that?

2

How was the plane loaded at the time?

3

I’ve certainly had it where the AP or APPR doesn’t seem to be working. Usually turning all the AP off and then on again does the trick but sometimes with altitude I just have to take over and re-engage AP a little while later.

4

This is why we got replays now…share the files we all can see what went wrong… IF doesn’t have any failure options yet.

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5

The cargo was distributed evenly and so was the fuel. I filled it up to 55%. It was a 7 hour flight so i probably had 15% of fuel left upon Arriving.

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I can't upload it says am not authorised
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