737 CLASSIC: do you check your gear VIEWERS before flight?
Today I've refused my airplane, as the nose gear viewer was totally obscured by dirt IN the tube.
As the airplane has to be pressurized on ground and blah blah after this sort of maintenance, a big mess ensued.
I can't figure why Boeing hasn't put this check in our procedures, but back in the time that was one of the first thing I was thought upon transition on the 737.
Being able to see the red arrows in contact is mandatory on airplanes without the dual green lights installation.
Do you check them in your company?