# General
## Introduction to the Reykjavik CTA
The **Reykjavik Control Area (CTA),** the controlled airspace that Iceland is responsible for, is unique in that it overlaps three territories (Iceland, Greenland, and the Faroe Islands) and two FIRs.
The following image depicts the two FIRs within the Reykjavik CTA – Reykjavik (BIRD) and Nuuk (BGGL).
[](https://wiki.vatsim-scandinavia.org/uploads/images/gallery/2023-09/Tgcscreenshot-2023-09-13-at-7-36-01-pm.png)
At present, Greenland delegates its enroute air traffic services to Iceland (as well as Canada.) Hence, the Reykjavik CTA consists not just of BIRD FIR, but also of the central and northern parts of BGGL FIR above FL195.
The CTA is divided into four sectors – North, South, East, and West. These sectors *do not* follow the FIR boundaries of BIRD or BGGL FIR.
[](https://wiki.vatsim-scandinavia.org/uploads/images/gallery/2023-09/guBimage.png)
The South sector overlies Iceland. The North sector overlies northern Greenland. The East sector overlies the Faroe Islands, and the West sector overlies central Greenland.
BGGL FIR is only delegated to the Reykjavik CTA **above** **FL195.** Below FL195, Nuuk Information provides flight information service in BGGL FIR.
## Airspace Classification
Out of the seven airspace categories defined by ICAO, the Reykjavik CTA uses five: A, C, D, E, and G.
| Class | Separation Provided | Service Provided | Speed Limit | Radio Communication Requirement | Subject to ATC Clearance |
|---|
| A | IFR from IFR
| IFR: Air traffic control service
–
VFR: ***NOT PERMITTED***
| N/A | Continuous two-way | Yes |
| C | IFR from IFR & VFR
–
VFR from IFR
| IFR: Air traffic control service
–
VFR: Traffic information, and traffic avoidance advice upon request
| 250KT IAS below FL100 | Continuous two-way | Yes |
| D | IFR from IFR
–
VFR: N/A
| IFR: Air traffic control service including traffic information about VFR flights (and traffic avoidance advice on request)
–
VFR: IFR/VFR and VFR/VFR traffic information (and traffic avoidance advice on request)
| 250KT IAS below FL100 | Continuous two-way | Yes |
| E | IFR from IFR
–
VFR: N/A
| Air traffic control service and traffic information about VFR flights as far as practical
–
Traffic information as far as practical
| 250KT IAS below FL100 | IFR: Continuous two-way
–
VFR: No
| IFR: Yes
–
VFR: No
|
| G | N/A | Uncontrolled; flight information service | 250KT IAS below FL100 | IFR: Continuous two-way
–
VFR: No
| No |
Classes B and F are not used in the Reykjavik CTA.
Most TMAs in the Reykjavik CTA are Class D (the Faxi TMA also has some Class A and C airspace.) All CTRs are Class D. FIZs and ATZs are Class G, but are also radio mandatory zones, meaning pilots must be in contact with the local AFIS unit.
Outside of TMAs, CTRs, and ATZ/FIZs, the Reykjavik CTA is:
- Class A above FL195.
- Class A above FL55 within the Reykjavik Oceanic Area (OCA).
- Class E within the lower portion of the Icelandic Domestic Area (3000ft – FL195.) (Note: the upper portion of the Domestic Area, from FL195-FL245, is Class A, as detailed above.)
- Class G below FL55 in the OCA, below 3000ft in the Icelandic Domestic Area, and below FL195 in Nuuk (BGGL) FIR.
## Transponder Equipment
All IFR flights in the Reykjavik CTA must have a pressure-altitude reporting SSR (i.e., Mode A+C) transponder.
All aircraft within the Faxi TMA must have an SSR (i.e., Mode A) transponder.
Aircraft operating on transponder codes assigned by Reykjavik Control must keep those codes set throughout the Reykjavik OCA unless otherwise advised by ATC.
## (Iceland Only) Abbreviating Local Registrations in R/T
When controlling Icelandic (BIxx) positions, in radio communications, controllers shall abbreviate *local* (Icelandic, with the TF- prefix) registrations as follows:
- On first contact, ATC shall **always** **omit the TF prefix.**
- E.g., the registration TF-ICE should always be spoken as “India Charlie Echo.”
- For further communications, ATC may choose to further abbreviate the callsign to its last two letters only.
- E.g., TF-ISN, normally spoken as “India Sierra November,” may be abbreviated further to “Sierra November."
This is different from the standard ICAO convention for callsign abbreviation, which is detailed below.
For *foreign* (non-Icelandic) registrations, controllers shall use the standard ICAO convention for abbreviating registrations in radio communications. I.e.,
- On first contact, ATC must **always use the full registration.**
- E.g., G-ABCD must be read out as “Golf Alpha Bravo Charlie Delta.”
- For further communications, ATC may abbreviate the callsign to its first letter + last two letters.
- E.g., G-ABCD may be abbreviated to “Golf Charlie Delta.”
**The above is not applicable to Greenlandic and Faroese positions.** When controlling such positions, controllers shall continue to use the standard ICAO convention for callsign abbreviation for all registrations, local and foreign.