MATMAX,
I totally agree with you on that one
Fixing airplanes is the driver of our motivation, changing boxes, bulbs, tyres,etc has to be done, but it's routine
With using your knowledge you can skip easely some steps in the fim.
fim is good, it can put you on the right way to look when your lost, but i encourage everybody to try to understand the system he works on instead of just stupidly following the boxes. At the end that is what make de difference between a good and bad mech/tech/engineer