May I ask what the point is?
Of course.
The point is just like your answer. There is no documentation for crew to refer to for instructions on even the most basic of maintenance tasks.
I quite often read or hear an answer like - but if in doubt we can always call maintenance watch. What triggers the call to maintenance watch? When are you in doubt? When does another pilot call maintenance watch?
You see every single task or inspection carried out by an Engineer is referenced to documents where the limits are black and white. It is called approved data. Qantas has introduced a system where some of these checks are now happening without approved data.
The clock is being turned back here and you really are flying by the seat of your pants. An aviaition term that in its true sense left us in the 20's.