What should be primarily checked as part of a night preflight inspection?

During a night preflight inspection, it is critical to check all instrument and lighting systems. This is due to the unique challenges that nighttime flying presents, such as reduced visibility and the reliance on instruments for navigation and operation. Properly functioning lighting systems are essential for safe operations, allowing the pilot to see the aircraft's instruments and external surroundings. Additionally, ensuring that all navigational aids are in good working order is vital, as the pilot will need to depend more heavily on these instruments during night flights.

While visual aids, exterior paint condition, and passenger comfort systems may have their importance, they do not take precedence over confirming the operational status of flight instruments and lights, which are crucial for safety during night operations.