What is required for GPS equipment before flight?

For GPS equipment to be reliable and effective during flight, it is essential that the GPS database is current. This database contains crucial information such as navigation waypoints, airspace boundaries, and obstacles. If the database is outdated, it might lack the most recent changes in airspace or new navigation aids, which could lead to navigational errors. Keeping the GPS database updated ensures that the pilot has access to accurate and up-to-date information necessary to navigate safely and comply with airspace regulations effectively.

The availability of the GPS manual or the review of onboard weather data is not a mandatory requirement for the operational readiness of GPS equipment before flight. Similarly, having outdated GPS equipment goes against the need for reliability and safety in navigation, making it an unsuitable option for pre-flight requirements.