Originally Posted by
WideScreen
Trim-switch failures: Could be, though "there are trim-switch-disable switches for that to overcome the issue", so a secondary upset should not have to happen, which did happen in just over a minute.
You understand that yoke trim switches have an "power button" button and a "direction" button? It's unlikely both switches would fail. Also, faulty yoke switch inputs can be immediately overridden by pulling/pushing on the stick in the opposite direction, then the cutout switches can be used.
Avionics maintenance engineer (40 years)