This is a pretty non-event. There are a number of system failures that can cause loss of pressurization. I've listened to a lot of ATC recordings and there are

This is a pretty non-event. There are a number of system failures that can cause loss of pressurization. I've listened to a lot of ATC recordings and there are many engine fires, bird strikes, and general malfunctions that never get reported on. Here's a video of two pilots demonstrating an emergency descent in a simulator: https://www.youtube.com/watch?v=yHawjB2PzK0 https://www.youtube.com/watch?v=yHawjB2PzK0