When changing attitude, the horizon reference line on the PFD moves, when it should stay in place, screenshot below.
I’m getting worried, no one else noticed this?
Not sure if I understand the problem.
The aircraft symbol (reference) is fixed. The horizon (line) and hence the pitch scale is moving.
I think their issue is that the horizon line isn’t always at the 0° pitch marker.
On the first screenshot, it’s somewhere around 2°.
Not sure if that might be correct for the 747 for some reason but looks odd to me.
On the backup instrument on the right it looks better, but I’m not sure if the enabled flight director in the first screenshot might affect the display in the PFD, im more familiar with the Airbus instruments.
Ah, now i’ve got it. The pitch scale, which should be fixed to AH (horizon line) isn’t fixed.
Looks like the same progressively increasing error like with the roll scale/pointer.
Look close at which pitch the horizon is shown. It should be the 0°, doesn’t it?
But its not, it’s at 2° pitch up.
It’s simply not centered between the 10° pitch up and 10° pitch down markers.
Not sure if that’s the issue reported by TO here, but I find this very odd.
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Voted. To the OP, you can upvote your own post.
Yep, this is the issue. The horizon line is moving relative to the rest of the pitch scale, and this is definitely not normal.
I removed the FD on the second screenshot to improve readability. To make things clear the first screen is obviously wrong, with the horizon line close to the 2.5° up line.
Thanks, I will do that for the rest of my posts.