Hi again.
Prober,I went through Q10 and to be honest I ll need some help.
Ok,I went throgh the UNSCHED STAB TRIM QRH
First thing you do is both CUTOFF,then A/P disengage,then try module by module to try to remove some CUTOFFS.Ok.
Then I went to FCOM.Ok,Stab Trim modules are driven by C and R Hyd,exactly the two systems that have to fail to bring us to an "all Autopilot inops" situation
And I found this sentence on Non Normals on FCOM:
If a single autopilot is engaged, electric trimming causes the autopilot to
disengage. If multiple autopilots are engaged, the electric trim switches are
inhibited. Alternate trimming does not cause autopilot disengagement.
So I know the answer is close,but I still don t see why the L Hyd providing Hyd Press to the L A/P Servo,why L A/P cannot work.
So come on,give a clue..