Which of the following is an example of information that must be reported regarding air safety?

Reporting NAVAID outages is crucial for ensuring air safety because navigational aids are essential for guiding aircraft during flight and helping pilots navigate accurately. If a NAVAID is non-operational or experiencing issues, it can significantly affect flight operations, pose risks during approach and landing phases, and impact overall air traffic management. Keeping air traffic controllers and pilots informed about NAVAID status is vital to prevent misunderstandings, miscommunications, or accidents that could arise from reliance on faulty navigational information.

In contrast, while flight schedule changes, passenger complaints, and metropolitan traffic updates are important in their respective contexts, they do not directly pertain to the immediate safety of air operations. Flight schedule adjustments may affect logistics but do not pose a direct safety threat like a NAVAID outage does. Passenger complaints are primarily customer service related, and metropolitan traffic updates do not typically influence air safety in the same direct manner as navigational aids do. Understanding this distinction is essential for effective air traffic management and ensuring the safety of all aviation operations.