Describe environmental control systems as related to humidity and illumination control.

Description should include the following concepts:

• Humidity and illumination can affect pilot comfort.
• Most large aircraft cockpits have a separate environmental control panel for pilots to regulate ambient temperature.
• The illumination on the left and right sides of the instrument panel may be adjusted independently to suit the individual pilot.

PLT137

Process/Skill Questions:

• Why is pilot comfort important?