How many smoke detectors are installed in the OFCR?

The correct answer is based on the standard configuration for smoke detectors in the Onboard Flight Crew Rest (OFCR) area, which is designed to ensure the safety of the crew while they are resting. In many modern aircraft, regulations and safety standards dictate that there should be a comprehensive fire detection system, including a sufficient number of smoke detectors to promptly alert the crew in case of smoke or fire hazards.

Having ten smoke detectors in the OFCR aligns with safety protocols to provide effective coverage throughout the rest area, ensuring that any potential danger is detected quickly. This number allows for redundancy and increased reliability, as detectors can fail or may not be able to sense smoke in every part of the area. It illustrates a proactive approach to safety in aircraft design, considering the relatively confined space of the OFCR and the critical need for immediate alerts in the event of an emergency.