The red line on the oxygen pressure gauge indicates a pressure of what value?

The red line on the oxygen pressure gauge indicates a pressure of what value?

• A. 1500 psi
• B. 2500 psi
• C. 2000 psi
• D. 1000 psi

Answer: (C)

The red line marks a fixed high-pressure reference on the oxygen bottle gauge. In the Beechjet 400A oxygen system, this marker is set at 2000 psi, reflecting the typical full-charge pressure for the cylinders. This makes it easy to gauge at a glance whether the cylinder is sufficiently charged: readings at or above the red line indicate a full or near-full supply, while readings below suggest the oxygen level is dropping and should be monitored or a fresh source planned. The line provides a quick, visual cue for readiness and helps ensure you have adequate oxygen for the flight without needing to read exact numbers constantly.

The red line marks a fixed high-pressure reference on the oxygen bottle gauge. In the Beechjet 400A oxygen system, this marker is set at 2000 psi, reflecting the typical full-charge pressure for the cylinders. This makes it easy to gauge at a glance whether the cylinder is sufficiently charged: readings at or above the red line indicate a full or near-full supply, while readings below suggest the oxygen level is dropping and should be monitored or a fresh source planned. The line provides a quick, visual cue for readiness and helps ensure you have adequate oxygen for the flight without needing to read exact numbers constantly.