Safety Assessment of Civil Aircraft Lighting System

Lighting system is an important branch of civil aircraft. It not only plays a significant role in the safety and performance of the aircraft and the work efficiency of the flight crew, but also an important component for passengers to evaluate the advancement and comfort of the aircraft. Generally, lighting system is consisted of cockpit lighting system, cabin lighting system, cargo and service area lighting system, exterior lighting system and emergency lighting system. To verify the compliance of lighting system to CCAR 25.1309 during the system developing process, usually adopt the guidelines and methods for system safety assessment put forward by SAE ARP 4761 in civil aircraft conformity certification. The main contents are system functional hazard assessment (SFHA), preliminary system safety assessment (PSSA), common cause analysis (CCA), and system safety assessment (SSA).