What is "explosive decompression" in aviation?

Explosive decompression in aviation refers to a rapid and significant drop in cabin pressure that occurs when the integrity of the aircraft's pressurization system is suddenly compromised, such as in the event of a structural breach. This rapid loss of pressure can lead to various dangers, including the risk of structural failure of the aircraft, as well as posing immediate threats to passengers and crew, such as hypoxia or exposure to extreme outside conditions.

Understanding this phenomenon is crucial for pilots and cabin crew, as it can drastically affect the safety procedures that need to be implemented. In contrast, a slow reduction of cabin pressure or a controlled pressure release does not present the same immediate risks that explosive decompression does. Additionally, methods such as pre-decompression before landing differ fundamentally as they involve controlled measures rather than sudden and uncontrolled pressure loss. This distinction highlights the critical nature of explosive decompression and its implications for aviation safety.