By a licensed FAA approved mechanic.
There can be hundreds of thousands of bolts on an aircraft
Yes, but this should be be done temporarily and at moderate speeds until a fifth lug nut can be installed.
Orangebox
ln a extreme aircraft wing
If it bolts up it is installed correctly.
Aircraft bathrooms are manufactured as a complete module which is installed by the aircraft manufacturer to the customer requirements. There location on the aircraft as well as the number installed is an option for the customer to choose. The modular construction allows their removal or installation at a later date if the customer wishes to change the aircraft configuration. No windows are installed to the unit as the position of the module is variable and may not align with a window aperture in the fuselage.
When an aircraft is weighed, an aircraft equipment list must be provided to the weighing agency. All equipment that is recorded on the equipment list must be in or on the aircraft at the time it is weighed.
False
Ideally: where they were first installed. Otherwise there's a problem!
mounting bolts
They're usually attached to the fuselage by strong bolts. These bolts are normally hidden from view - and accessed by a small panel.
There are no bearings in brakes, but the hub has large ball bearings