How often must the information used for navigation with an EFB be updated?

The requirement for navigation information used with an Electronic Flight Bag (EFB) is that it must be current, up-to-date, and valid at the time of use. This ensures that pilots have the most reliable and accurate information for navigation, which is crucial for safety and compliance with regulations. Keeping the data updated helps in accessing the latest airspace changes, weather information, and other critical navigational details that can impact flight safety and routing.

Options that suggest specific time frames, such as every 24 hours or weekly, do not adequately capture the dynamic nature of navigational data. Similarly, the notion of only updating the information before each flight does not account for the need to stay informed about any changes that could occur even just hours before the flight or during the flight itself. Therefore, it is essential that pilots ensure the data is always current and valid, which encompasses a broader and more flexible approach to managing navigational information.