What must visibility be for solo cross-country flights?

For solo cross-country flights, the minimum visibility requirement is indeed 5 miles. This standard is set to ensure that pilots have adequate visual cues for navigation and are able to maintain situational awareness during flight. Visibility of 5 miles allows for safer operations, enabling the pilot to see and effectively respond to other aircraft, obstructions, and weather conditions.

This visibility requirement is particularly important during solo flights, where the pilot may not have an instructor on board for guidance. By adhering to this standard, pilots can significantly reduce the risk of accidents related to poor visibility, making it essential for safe flight operations in a variety of environments.