Originally Posted by
Rananim
It wasnt...it was trimming as designed...but to the pilot it appeared to be trimming the wrong way..... makes sense as he had corrupted CAS data.
He cant as far as I know.FCC A commands the signal from power up.After landing,the squat switch on the gear will change it to FCC B for the next flight.The pilot must disengage AP stab trim to stop the unwanted trim.Using electrical trim overrides it but wont disable it.After 5 seconds,STS will trim again.Pulling on the stick will stop the trim but again it will start trimming if stick pressure is released.It has to be disabled in a UAS(or rather this particular UAS scenario).Ive never encountered this problem during UAS in simulator.However,this doesnt mean it cant happen.Too many variables.....ie type of UAS,which FCC is controlling etc.
...again, as a SLF it seems a bit odd that there exists the opp to switch AP to B, whilst AP Stab Trim is fixated on A and at best can be disabled. Why not allow AP Stab Trim to use B? I’m sure there’s a good reason! But your theory is quite scary....AP Stab Trim just continues to push down given it’s on faulty too-slow A-side airspeed...?