CRJ Series Fuel Check Valve Check.
CRJ experts out there. Can anyone enlighten me on the fuel check valve "check". supposedly to be done on the first flight of the day. In the case that the valve does not function normally is this covered by the checklist and the MEL. I have heard that a large proportion of operators do not do this check. So is it mandatory or just recommended. What is the easiest way to check it.