During the decompression drill, what is the second step after putting on the oxygen mask?

After putting on the oxygen mask during the decompression drill, the second step is to strap in, which means putting on the seatbelt. This step is essential because it ensures that the crew member is securely fastened in their seat, which is crucial for safety during potentially turbulent conditions that may accompany a decompression event. Securing the seatbelt also allows for better control over the situation, as the crew member can focus on their responsibilities without being at risk of being thrown around the cabin due to sudden changes in altitude or pressure.

The primary focus during a decompression event is to quickly and efficiently ensure the safety of both the crew and passengers. Securing oneself first allows for immediacy in proceeding with further emergency procedures without unnecessary risk. Following the proper sequence of actions helps maintain an orderly and effective response in a critical situation.