Which system improvement does disconnecting from the aircraft oxygen system achieve?

Disconnecting from the aircraft oxygen system is primarily designed to minimize suffocation risk. In certain scenarios, such as when flying at high altitudes or in emergencies, ensuring a reliable flow of oxygen to the pilot is crucial. However, if the oxygen system becomes compromised or malfunctioning, disconnecting allows the pilot to manage their own oxygen supply, either by switching to backup systems or using personal oxygen equipment. This action focuses on maintaining safety and preventing hypoxia, which can occur due to inadequate oxygen levels.

While reducing equipment weight and improving oxygen flow might seem plausible benefits in some contexts, they are not the primary focus of disconnecting from the oxygen system. Enhancing flight performance is also not relevant in this scenario, as the primary concern is ensuring the pilot’s safety and adequate oxygen supply.