At what altitude must oxygen be installed when flying for more than 30 minutes?

When flying at altitudes above 13,000 feet for more than 30 minutes, the requirement for supplemental oxygen comes into effect according to New Zealand Civil Aviation Rules. At this altitude, the partial pressure of oxygen decreases, leading to a risk of hypoxia for crewmembers and passengers. This regulation is in place to ensure that pilots and passengers can maintain optimal cognitive and physical functions during flight, thereby enhancing safety.

Understanding this requirement is crucial for flight safety, as oxygen becomes essential to prevent impairment at high altitudes due to reduced oxygen levels in the atmosphere. The thresholds for oxygen use are clearly defined to help ensure that all individuals onboard can safely operate and navigate the aircraft without the adverse effects that altitude can bring.