Speed Trim 737-800?
In my wisdom i thought i would try a bit of hand flying yesterday, and noticed that as we accelerated with the A/P disengaged the aircraft was self trimming back during the T/O phase?
this seems a bit bizaare, as it should be trimming forward. Both the Captain and myself questioned this. But the engineers said it was Speed trim.
I suppose we should know why this happened - but sometimes when your so used to engaging the A/P at 1500ft i assumed that the trimming was due to the A/P...
Any thoughts on this and why it trims the aircraft back instead of forward..
Thanks
RA