Environmental

Question 1

Describe the operation of the temperature control system with the MODE switch in AUTO

Answer 1

The positions of the Temperature Modulating Valves are automatically adjusted by the Air Management System Controller (AMSC) to mix pre-cooled pneumatic supply air with Heat Exchanger cooled air to achieve the selected cockpit and cabin temperature. Additionally, the Vapor Cycle System (VCS) cycles on and off as required.

Question 2

Describe the operation of the temperature control system with the MODE switch in OFF.

Answer 2

All functions are the same as in AUTO except that the Vapor Cycle System (VCS) is disabled.

Question 3

Describe the operation of the temperature control system with the MODE switch in MAN.

Answer 3

The positions of the Temperature Modulating Valves are manually adjusted using the TEMP switch to mix pre-cooled pneumatic supply air with Heat Exchanger cooled air. The Vapor Cycle System still operates as required.

Question 4

Does the Vapor Cycle System operate with the MODE switch in MAN?

Answer 4

Yes

Question 5

What component of the temperature control system is disabled with the MODE switch in the OFF position?

Answer 5

Vapor Cycle System

Question 6

Does the temperature control system operate automatically or manually with the MODE switch in the OFF position?

Answer 6

Automatically

Question 7

What is the cockpit indication that the Vapor Cycle System is active?

Answer 7

Environmental Synoptic Page

Question 8

What power source(s) are required for the Vapor Cycle System to operate?

Answer 8

GPU or at least one generator (28V power source)