What safety measures exist in the event of a failure of the Cabin Atmosphere Control System (CACS)?

In the context of the Cabin Atmosphere Control System (CACS), the presence of backup systems and emergency procedures is essential for ensuring passenger and crew safety in the event of a system failure. These backup systems typically include redundant components that can take over the primary functions of the CACS if it fails. This increases reliability and helps maintain optimal cabin conditions, such as temperature and pressure.

Furthermore, emergency procedures are put in place to guide the crew through managing a failure scenario. These procedures might entail specific actions to stabilize cabin conditions or prepare for potential evacuations if necessary. The combination of redundancy in systems and predefined action plans helps mitigate risks during critical situations and ensures that safety is prioritized.

Other measures, while useful, do not address the complete framework necessary for safety during a CACS failure as effectively as backup systems and emergency procedures. The correct answer encapsulates the comprehensive strategy involved in maintaining safety in the event of system dysfunction.