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Aircraft general knowledge

8.12 Flight instruments

(Generel viden om luftfartøjer 3 - 2 videoer)

A general rule for all flight instruments that use the ambient air is that they only

display correctly in what we call the “standard atmosphere” (ISA = international

Standard Atmosphere).

The conditions of the standard atmosphere are:

Sea level pressure 1013.25 hPa (Hecto Pascal)

Pressure drop 1 hPa per 30 feet

o
o
Temperature 15 C decreasing 2 C per 1000 feet higher
Humidity Not found in the standard atmosphere

8.12.1 Instrument panel

Above is a picture of the instrumentation in a cockpit.

We can divide the instrumentation into several groups. For example, engine
instruments and sensors, flight instruments, radio equipment, gyro instruments

and so on.

Now we will look at the selection.

Flyveteori PPL(A)(UL)/LAPL Henning Andersen, Midtjysk Flyveskole© 2025 761