What duration of crew oxygen is available in NORM mode?

In NORM mode, the crew oxygen system on the Embraer Regional Jet provides approximately 98 minutes of oxygen supply. This extended duration is crucial for ensuring crew safety in the event of cabin depressurization or other emergencies requiring supplemental oxygen. The NORM mode is designed to optimize the flow of oxygen to the masks, ensuring that crew members have sufficient time to manage situations effectively. This aspect of the oxygen system is vital for compliance with safety regulations and enhancing crew preparedness during flight operations.