Well I'm not really looking for someone to take my side, I am simply the last line in the Safety chain and want to ask the experts about the subject, and as Golden Rivet points out, it is not listed in the MEL.
Grounded27, it sounds like you have some major issues with flight crews, whatever your problem is, from your point of view, if the engineer followed proper procedure, how would I possibly burn him by delaying the flight until they find a valve cap, I would be the one having tea and biscuits with the CP?
Cheers, D.L.