Originally Posted by
Concours77
A Squared.....”......To me, that last sentence says "You can turn it off, but it might still keep running anyway" I'm not a 737 systems expert by any means, but I don't know how else you can reasonably interpret that sentence...”
If it is installed to provide Stall recovery, would it be reasonable to allow it to be disabled? I’m thinking there is more to Boeing’s Logic re non disclosure...
I don't know. I'm just saying that Boeing's words in the AD seems to indicate that moving the switches to "CUTOUT" is not a 100% guaranteed clean kill on stabilizer trimming. Why that is, or how it happens, I can only speculate. I have a hard time imagining designing a system that moves your flight control surfaces, and you can't turn off completely. Perhaps Boeing is alluding to the possibility that the contacts in a STAB TRIM switch become welded and don't open the circuit. I'm grasping at straws here.