Originally Posted by
calypso
Simply not true. Manual trim is used regularly while conducting air tests. I have used it, it works fine. Obviously if you allow ANY trim to go to the stops you have a serious problem in your hands. Speed trim, aileron trim or rudder trim..... in a 737 or in most other aircraft.
For the avoidance of doubt and for the benefit of other readers - can you confirm then that the smaller trim wheel in the NG and the MAX works fine and that you have used it successfully in air tests? This would contradict reports dating to before the MAX issues that aircrew had had difficulty with it.