What is the emergency procedure for opening the flight deck window on the ERJ 175?

The emergency procedure for opening the flight deck window on the ERJ 175 requires pressing the red lock button and then pulling the handle inward and backward. This procedure is designed to ensure that the window can be opened safely and efficiently in the event of an emergency, allowing for potential air evacuation or to address scenarios requiring fresh air.

The red lock button plays a crucial role in this process by disengaging any locking mechanisms that may prevent accidental opening, ensuring that when the handle is pulled, the window can be opened smoothly. The design of the handle and the technique of pulling it inward and backward are specific to maintain control over the window's opening, ensuring that the operation does not lead to unintended consequences.

Other methods such as simply pressing a button or attempting to break the window do not reflect the proper procedure, which is focused on safety, control, and effective execution in emergencies.