Final answer:
The statement is false. Selecting EMERG mode provides emergency cooling to both the left TR and avionics air, while selecting NORM mode does not switch the FCC A and right TR cooling back to avionics air.
Step-by-step explanation:
The statement is false.
When the EMERG mode is selected on the FCS COOL switch, it sends a signal to the Flight Control Computer (FCC) to provide emergency cooling to the left TR and avionics air. This means that the left TR and avionics air are both receiving cooling, not just the right TR cooling. Selecting NORM mode will return the cooling system to its normal operation, but it will not switch the FCC A and right TR cooling back to avionics air. They will continue to receive cooling in the normal mode as well.
In summary, selecting EMERG mode provides emergency cooling to both the left TR and avionics air. Selecting NORM mode does not switch the FCC A and right TR cooling back to avionics air. They receive cooling in both emergency and normal modes.