Under what conditions does the air conditioning system operate?

The air conditioning system in the T-6B operates effectively when the engine is on, the generator is on, and the appropriate switches are activated. This setup ensures that the air conditioning system has the necessary power and engine-driven resources to function properly.

When the engine is running, it drives the air conditioning compressor, which is critical for cooling the cabin air. Additionally, with the generator on, there is adequate electrical power available to operate the electronic components of the air conditioning system. Activating the switches allows the pilot to control the system and ensure it is operational.

In contrast, the other conditions would either result in insufficient power or the lack of necessary mechanical operation for the air conditioning system to work. For instance, with the engine off or the generator off, the system would not function at all due to a lack of power or mechanical drive.