Definition
An air traffic facility operated by the FAA that provides pilots with weather briefings, flight plan filing and processing, en route communications, search and rescue services, assistance to lost or distressed aircraft, relay of air traffic control clearances, and broadcast of aviation weather and aeronautical information.
Plain English
A federally run service that pilots contact -- by phone before a flight or by radio in flight -- to get weather, file or open a flight plan, and receive other flight-related help. It is not air traffic control; it is a support service for pilots.
Context Anchor
Pilots encounter Flight Service Stations when getting a preflight briefing, filing or opening a flight plan, checking weather en route, or asking for assistance by radio or phone.
Derivation
“Station” originally meant a fixed post or assigned place. That helps here because a Flight Service Station is the assigned aviation service point for pilot information and communication, even when the pilot contacts it remotely rather than visiting a building.
Why Pilots Care
Access to accurate, timely information from a Flight Service Station helps pilots make informed go/no-go decisions and maintain situational awareness during flight.
Intuition Check
Do not read this as a maintenance shop or a passenger service counter. A Flight Service Station is mainly for pilot information, communication, flight-plan handling, and overdue-aircraft assistance.
Example Sentence 1
Before departure, the pilot called Flight Service for a standard weather briefing and filed a VFR flight plan to the destination airport.
Example Sentence 2
After landing, the pilot contacted the Flight Service Station to close their flight plan.