What happens at low air pressure that makes it easier for RIC teams to connect to the UAC?

• A. The UAC emits a beep
• B. The UAC automatically locks
• C. The flow rate increases
• D. The white light illuminates the UAC fitting

Answer: (D)

When air pressure drops, the UAC is designed to provide a visible cue to signal readiness to connect. The white light on the UAC fitting turns on, making the connection easier to find and align in smoky or low-visibility conditions. That illumination helps the RIC team quickly and accurately engage the coupling, which is more practical and reliable than relying on sounds, automatic locks, or changes in flow rate. The light directly guides where and how to connect, which is why it’s the best answer.