While on a cross-country, if you determine the navigation database has expired, can you still fly GPS approaches on subsequent legs of your mission?

In the context of flying cross-country and relying on GPS approaches, it's crucial to ensure that the navigation database is current and valid. Using an expired database can lead to inaccuracies in the approach procedures, waypoints, and operational capabilities of the GPS system, which could significantly increase the risk of navigation errors and hinder safety.

Regulations governing aviation and instrument approaches emphasize the importance of utilizing up-to-date navigation data. If the navigation database has expired, the integrity of the approach procedures cannot be guaranteed, making it unsafe to conduct GPS approaches on subsequent legs of the mission. Ensuring that all data is properly updated and valid is essential for maintaining the standards of safety and compliance required in aviation operations. Thus, the correct answer highlights the necessity of having a current navigation database for the execution of GPS approaches.