What is the maximum passenger cabin altitude allowed in the ERJ 170/175?

The maximum passenger cabin altitude allowed in the ERJ 170/175 is indeed 8,000 feet. This limitation is critical for ensuring passenger safety and comfort during flight. Cabin pressure must be maintained within a certain range to prevent hypoxia, which can occur if the altitude exceeds this limit.

Operating at or below 8,000 feet is essential for maintaining an adequate level of oxygen, particularly during ascent and descent phases of flight. This limit is reflective of regulatory standards set by aviation authorities, which enforce safe operational parameters for pressurized aircraft. Other options represent altitudes that exceed safety and comfort thresholds for passenger breathing and overall health during flight. Maintaining the cabin altitude at or below this limit ensures compliance with best practices in aviation safety and enhances the travel experience for passengers.