Aviation Computer Based Training (CBT) Practice 2025 - Free CBT Practice Questions and Study Guide

When an oxygen regulator is functioning correctly, it is designed to maintain a constant pressure of oxygen delivery regardless of fluctuations in altitude and cabin pressure. The ability to ensure that the pilot and passengers receive a consistent oxygen flow is crucial for preventing hypoxia during flight, particularly at high elevations where the available oxygen in the atmosphere is insufficient for normal breathing.

A functioning regulator adapts to changes in altitude, adjusting the flow and pressure to provide the correct dosage of oxygen needed for safe and efficient breathing. This constant pressure capability is vital for pilots who need to maintain cognitive and physical performance during high-altitude operations.

The other choices do not reflect the full capabilities of a correctly functioning oxygen regulator. While they may relate to various aspects of oxygen systems, they do not encompass the critical function of ensuring a constant pressure supply.