When jettisoning a window/hatch from inside the aircraft, what should you ensure to do?

When jettisoning a window or hatch from inside the aircraft, it is crucial to face away from the window or hatch. This is done to protect yourself from any potential hazards that may arise from the sudden decompression or explosive force when the window or hatch is released. By facing away, you reduce the risk of injury from any debris or pressure waves that may occur during the jettisoning process.

Considering the other options, while closing all equipment, wearing an oxygen mask, and notifying the crew may be good practices in certain situations, they do not address the immediate safety concern of positioning while jettisoning. The primary focus should always be on ensuring personal safety and minimizing the risk of injury, which is why facing away from the window or hatch is the most essential action in this scenario.