Which source provides current en route and destination weather information for an instrument flight?

The correct choice of Flight Service as the source for current en route and destination weather information is based on the comprehensive role these services provide to pilots. Flight Service Stations (FSS) are dedicated facilities that gather, synthesize, and disseminate aviation weather information. They offer timely updates on various weather conditions, including en route conditions and forecasts, which are crucial for flight planning and safe navigation during an instrument flight.

Flight Service presents information such as METARs (Meteorological Aerodrome Reports), TAFs (Terminal Aerodrome Forecasts), and other significant weather advisories. This capability ensures that pilots receive the most relevant and immediate weather updates, which are essential for maintaining flight safety and compliance with instrument flight rules.

In contrast, while Air Traffic Control does provide critical operational information and can relay some weather data, its primary focus is on flight safety and airspace management rather than detailed weather reporting. Local airport weather stations are limited in scope to their immediate vicinity and may not capture broader en route weather conditions. Meteorological satellites offer large-scale weather observation, but they do not provide the real-time, pilot-specific weather updates that are typically needed during flights. Thus, Flight Service stands out as the best option for comprehensive and current weather information relevant to