If the indications do not clearly show that a fastener is loose, make a red line across the head and the adjacent material.

The primary function of the hydraulic pressure system is to supply pressure for the operation of the flight controls.

To bleed the braking system, operate the hand pump handle through its full travel.

Adjust the indicator to zero once there is contact with the elevator tab leading edge.

When you lift or lower the aircraft, always keep it in a level attitude.

Most secondary structures are important to the performance of the airplane.

Remove the protective layer from one side of the new gasket with ANTENNA SIDE markings.

Obey local regulations for the correct procedures to use or discard solvents.

Always obey the precautions that follow to keep electrical wiring in a satisfactory condition.

A pressurized system can cause injury to persons when they do work on it.

The technical reference document contains a list of necessary document, such as Service Bulletin, Service Letter and etc.