What is indicated by a red light on the aircraft's warning panel?

A red light on the aircraft's warning panel signifies a critical failure that requires immediate attention from the flight crew. This could indicate a serious issue, such as engine failure, loss of vital systems, or other conditions that can jeopardize the safety of the aircraft and its occupants. When a red warning light illuminates, pilots are trained to react without delay, following established procedures to address the critical situation effectively.

In aviation, warning lights are color-coded to help pilots quickly prioritize their actions. Red is universally recognized as a signal for an urgent issue that cannot be ignored. In contrast, other colors like yellow or green are typically associated with non-critical errors or normal operation, thereby helping to delineate the severity of the situation. Understanding this color-coding system is crucial for effective management of aircraft systems and ensuring flight safety.