Originally Posted by
Jonty
It’s not really necessary for a non hydraulic induced direct law landing as manual pitch trim is available via the trim wheels. Why the G+Y hyd QRH says to do that is due to the fact the THS is also lost, so when the landing gear goes down the elevators are set in a “null” position so the aircraft is “trimmed” to a stick neutral position.
Aah, thanks. I think I'm going down a rabbit hole of misunderstandings. So the reason is that you are usually still actually able to trim the aircraft when in direct law.
What has confused me is that the STAB JAM QRH just says
"If MAN PITCH TRIM not available:
For landing: use flap 3"
Wheras the FCOM then also includes the instruction "When Conf 3 and VAPP: L/G DN"
Any idea why the QRH doesn't include this info?
Thanks for your help.