Definition
Ground staff who work on the flight line — the area of an airport where aircraft are parked, fueled, serviced, and prepared for flight. This includes line service technicians, fuelers, marshallers, and ramp agents who handle aircraft movement, refueling, towing, tie-down, and other ground support tasks.
Plain English
The people who work on the ramp area of an airport, helping with parking, fueling, towing, and getting aircraft ready to fly.
Context Anchor
You will see this term in discussions about coordinating with people on the ground before starting, taxiing, parking, fueling, or leaving the aircraft.
Derivation
The 'flight line' is the strip of ramp where aircraft are lined up — originally a literal line of parked aircraft at military and early civilian airfields. 'Personnel' simply means the people who work there. Knowing the term refers to a specific physical area of the airport (not the runway, not the hangar) helps anchor what these workers actually do.
Why Pilots Care
Clear communication with flight line personnel prevents ground mishaps and ensures the aircraft is properly prepared before flight.
Intuition Check
Do not assume flight line personnel means pilots or only people who fly. In this context, it usually means the ground workers around the aircraft who support the flight.
Example Sentence 1
Before starting the engine, the pilot made eye contact with the flight line personnel marshalling the aircraft out of its parking spot.
Example Sentence 2
Flight line personnel towed the airplane to the active runway after the pilot completed the preflight inspection.