The callsign suffix indicates the type of service. Which of the following lists would not be considered a control service?
Looking at the correct answer:
- Radio --> CORRECT. Radio is the call sign for an aeronautical station without an ATC Air Traffic Control service. This can be found, for example, at a smaller airfield as used by PPL type traffic.
- Information --> CORRECT. Flight Information service is a service provided for the purpose of giving advice and information useful for the safe and efficient conduct of flights.
The other services are control services as detailed below and in the table:
Director --> is a type of ATC approach control service, used at busy airports such as London Heathrow. The Director vectors inbound aircraft under a radar service.
ICAO Annex 10, Volume II
5.2.1.7.1.2 The unit or service shall be identified in accordance with the table below except that the name of the location or the unit/service may be omitted provided satisfactory communication has been established.
| Unit/service available | Call sign suffix |
| area control centre (without radar) | CONTROL |
| approach control (arrival and departure control service without radar) | APPROACH |
| approach control radar arrivals | ARRIVAL |
| approach control radar departures | DEPARTURE |
| aerodrome control (responsible for take-off, landing and aircraft in the CTR) | TOWER |
| surface movement control (responsible for all movements on the airport except the apron) | GROUND |
| radar, in general (enroute services) | RADAR |
| precision approach radar (guidance on final using specialised radar antennas) | PRECISION |
| direction-finding station | HOMER |
| flight information service | INFORMATION |
| clearance delivery (transmission of enroute clearances) | DELIVERY |
| apron control (aircraft guidance on the apron by the airport operator) | APRON |
| company dispatch (transmission of flight regularity messages of aircraft operating agencies) | DISPATCH |
| aeronautical station | RADIO |
Your Notes (not visible to others)
This question has appeared on the real examination, you can find the related countries below.
Use Keyboard Shortcuts
