What is the acceptable range for the escape slide pressure gauge during the preflight inspection on the ERJ 175?

The acceptable range for the escape slide pressure gauge during the preflight inspection on the ERJ 175 is indicated by the gauge needle being in the green zone. This zone signifies that the escape slide is properly pressurized and ready for deployment in the event of an emergency. Maintaining the pressure within this range is crucial for ensuring the slide functions effectively and reliably.

In contrast to the green zone, any readings in the yellow or orange zones would indicate potential issues with slide readiness, such as insufficient pressure, which may compromise safety during an emergency evacuation. Similarly, a gauge reading in the red zone would denote a critically low pressure that could render the escape slide non-functional. Thus, it is vital for crew members to ensure the gauge needle is within the green zone during preflight checks to guarantee that passengers have safe and immediate access to the escape slides if required.