This course covers the definitions, functions and components of alarm and proximity systems as defined in CS-25. Alerting systems are divided into levels based on importance and urgency: Warnings, Cautions and Advisories. Each level requires a different response from the flight crew. Warnings are indicated by a red flashing light and a continuous repetitive chime, while Cautions are indicated by an amber flashing light and a single chime. The course also covers stall warning and stall prevention systems, their types, components and differences. It also explains the function of take-off configuration warning systems and altitude warning systems.