What is the primary function of "Flight Watch" services?

The primary function of "Flight Watch" services is to provide pilots and dispatchers with real-time weather updates. This service is essential for safe flight operations, as it supplies critical information about current weather conditions along the flight route, including potential hazards such as turbulence, thunderstorms, and changing wind patterns. By being informed of the latest weather developments, pilots and dispatchers can make informed decisions regarding routing, altitude changes, and any necessary precautions to ensure a safe and efficient flight.

The other options do not align with the main purpose of Flight Watch. Scheduling aircraft for maintenance is a function managed by maintenance and operations departments, while monitoring flight paths for efficiency is typically handled through air traffic control systems. Handling passenger check-in procedures pertains to airline operations rather than flight safety and weather monitoring, which Flight Watch focuses on.