Which of the following best describes the inspection of signage at airports?

The most accurate description of the inspection of signage at airports is that it must be readable with no missing or faded panels. This requirement ensures safety and effective communication for passengers and airport personnel. Clear and legible signage is essential for guiding travelers through the airport, providing critical information regarding directions, services, emergency procedures, and regulations.

For airports, signage plays a crucial role in mitigating confusion and enhancing the overall passenger experience. Signs that are missing or faded can lead to misunderstandings, delays, and safety hazards. Thus, regular inspections that focus on the condition and visibility of signage are vital.

The other options do not accurately reflect the broad requirements for airport signage inspection. Displaying signs only during daylight hours would limit their effectiveness, especially since airports operate 24/7. Mandatory animated features may not be necessary and can detract from the clarity of essential information, while annual updates of all signage might be impractical, as some signs need to be inspected and maintained much more regularly to ensure safety and functionality.