In the description of the airplane＇s Flight Instruments, any new kinds of flight instruments shall be briefly described and principle of operations explained.

Make sure that the doors are closed during the pressurization test.

Make sure that there is tension in the lockwire.

The time between clicks must be 20 seconds.

Measure the time necessary for the pressure to decrease.

To install the indicator, tilt it rearward.

The tolerance is plus or minus 0.2 mm.

A number in the top left corner of the display refers to a related page.

The vertical stabilizer is installed on the top of the fuselage tail section.

Torque the plug to 6 Nm.

Make sure that the lock nut touches the spring.