Ground Control
Definition
Ground Control is a dedicated air traffic control (ATC) service responsible for managing all non-runway aircraft movements on the aerodrome surface. This includes taxiing to and from parking stands, aprons, hangars, and holding points — but not takeoffs or landings, which fall under Tower Control. Ground Control operates on a separate radio frequency (often called Ground Frequency) and coordinates closely with Tower, Apron, and other airport services.
Primary Responsibilities
- Issuing taxi clearances
- Managing aircraft movement on taxiways and aprons
- Coordinating pushback clearances (at larger airports)
- Preventing taxiway congestion or conflicts
- Coordinating vehicle movement on maneuvering areas
- Assigning holding points before runway entry
Phraseology Examples
- “D-EABC, taxi to holding point runway 27 via Alpha and Bravo”
- “Taxi to stand 5 via Echo and Apron North”
- “Hold short of runway 16”
- “Contact Tower on 118.300 when ready”
Typical Ground Frequency Use
Ground Control vs. Tower
| Aspect | Ground Control | Tower Control |
|---|---|---|
| Area | Taxiways, apron, stands | Runway and airspace immediately around the field |
| Role | Taxi and parking coordination | Takeoff, landing, go-arounds |
| Clearance type | Taxi clearance | Takeoff / landing clearance |
| Frequency | Ground frequency (e.g., 121.9 MHz) | Tower frequency (e.g., 118.8 MHz) |
Clearance Structure
A typical taxi clearance includes:
- Destination: Holding point or stand
- Route: Taxiways to be used
- Restrictions: Hold short instructions or stopbars
- Runway information: For departures
Example:
"OE-CVC, taxi to holding point runway 08 via Bravo, hold short of runway."
Key Rules
- ✅ Never taxi without clearance
- ✅ Read back all taxi instructions
- ✅ Do not cross runways unless specifically cleared
- ✅ Stay alert for conditional clearances (e.g., “after landing traffic, line up”)
Additional Notes
- At busy airports, Ground may coordinate with Apron Control, which handles gate assignments and ramp positions
- In smaller aerodromes without a dedicated Ground frequency, Tower may provide taxi instructions
- Vehicle drivers also communicate on Ground frequency using vehicle call signs (e.g., “Follow-Me 1”)
