I have to go look at a machine and want to verify the serial number when I get there. I know nothing about excavators.
Most all excavator manufactures put it on the lower left hand side of the cab outside attached to the sub frame,
It depends. Is the number found is a complete aircraft registration number, it can be used to identify the plane, including the model, manufacturer, operator, and many others including history with some research. But if it's the number on a part, then it can lead you to identify what part.
You need to look at driver's part of windshield in bottom right hand corner and get the VIN #.
