Big Pistons,
If I hold the brakes in my aircraft and slowly increase the thottle, the redline rpm would be reached at a MP typically of about 25-26". When I increase the throttle further I imagine that the CSU increases the pitch. (Yet holding the brakes).
Therefore I imagine that a malfunction that only causes a slight power reduction could go un-noticed if I only confirm "full MP - redline rpm".
It was a long time since I flew any other CS prop aircraft so I have basicly nothing to compare with, but is it normal to achieve redline rpm at zero speed before the thottle is fully opened?