Which aircraft are you experiencing this issue in?
787-10
Are you using Developer Mode or made changes in it?
beta AAU 2
Have you disabled/removed all your mods and addons?
yes
Brief description of the issue:
on 787 AAU 2 as soon as you break ground on Takeoff Aircraft has erroneous pitch up attitude that is not commanded, then stops at about 30 feet you can also duplicated a few rotate at a lower speed and aircraft is in Ground effect Aircraft will sink and has Pitch up oscillation that does not correspond to any pitch command also corrects between 30 and 50 feet and normal flight is regained or the pitch limit is exceeded, and the aircraft will stall
If you watch the attached video, you’ll see that at as the aircraft breaks ground the stab trim jumps from the 3.5 units from fmc cg calculation to over 6.5 un commanded
( zoom into stab trim indication )
Provide Screenshot(s)/video(s) of the issue encountered:
Detailed steps to reproduce the issue encountered:
set aircraft trim up per fmc an hold on
PC specs and/or peripheral set up if relevant:
Both PC an XBox X duplicated
Build Version # when you first started experiencing this issue:
AAU 2 Beta (1.33.3.0)
For anyone who wants to contribute on this issue, Click on the button below to use this template:
Do you have the same issue if you follow the OP’s steps to reproduce it?
Provide extra information to complete the original description of the issue:
If relevant, provide additional screenshots/video:
I also have this problem on takeoff.
2 Likes
Do you have the same issue if you follow the OP’s steps to reproduce it?
Yes
Provide extra information to complete the original description of the issue:
During take-off the aircraft pitches violently un-commanded. Looking on replay it seems to happen as the rear wheels start to lift from the runway and start to tilt slightly vertical. Almost seems like when this happens the sim detects they are colliding with the ground again. Flight tracking software also detects these as “Landings”.
3 Likes
Had the same problem and also had it stall on take off after doing this.
Happened to me as well.
FYI… Working Title is aware of this problem. It was brought up often throughout the day in the 787-10 channel of their Discord.
Your answer is there in the video. Have a look at the stab trim position on the FO’s display. It jumps from about 3.5 units to about 8.5 units just after rotation. This is clearly a bug for WT to fix.
2 Likes
Hello,
This is a ground to air transition bug with the fly-by-wire system and a fix should be in the next build.
Thanks!
10 Likes
Do you have the same issue if you follow the OP’s steps to reproduce it?
yes
Provide extra information to complete the original description of the issue:
Plane takes a long time to unstick at Vr. Then when it does unstick rotates very quickly
If relevant, provide additional screenshots/video:
1 Like
Has this been fixed? I set my trim around 5.25 as requested by the system and yet when I takeoff and press AP, I either have very steep climb rate 6000ft/min or I spiral back down to ground (once)
Very odd.
If it has been fixed, what could I be doing wrong?
