Thanks Hovis, I only ask as I want to emphasise to this guy that moving the switch is a big no no,One of our engineers said that if there were any tests that were likely to cause an unpleasant surprise then there would be an engineer in the cockpit and pilots wouldn’t be allowed in. Is there any test which the enable postition would be used that falls into this category. Or there are no tests that would move say thrust reverser trim, spoiler or primary Control surface.