What description corresponds to the HUD status Full?

What description corresponds to the HUD status Full?

• A. Full: 4 green lights 100% to 75%
• B. 3 green lights 74%-50%
• C. 2 middle lights flashing yellow 49%-36%
• D. Flashing red continuously until shutdown or 200 PSI 35%-0%

Answer: (A)

HUD status Full is shown by four green lights, signaling 75% to 100% of cylinder air remaining. This rapid, at-a-glance cue helps firefighters gauge when the tank is essentially full and how much air is left to manage during operation. The other patterns indicate lower air: three greens mean roughly 50–74% remaining; two middle lights flashing yellow indicate about 36–49%; and a flashing red warning continues until shutdown or until 0% is reached, signaling critical or empty. So the four green lights mapping to 100%–75% remaining is the correct description for Full.

HUD status Full is shown by four green lights, signaling 75% to 100% of cylinder air remaining. This rapid, at-a-glance cue helps firefighters gauge when the tank is essentially full and how much air is left to manage during operation. The other patterns indicate lower air: three greens mean roughly 50–74% remaining; two middle lights flashing yellow indicate about 36–49%; and a flashing red warning continues until shutdown or until 0% is reached, signaling critical or empty. So the four green lights mapping to 100%–75% remaining is the correct description for Full.