The purpose of the coordination is the direct communication between two different air traffic controllers with sending and receiving flight data or air traffic controller information.
The coordination is used to:
The coordination can be:
The use of guard frequency 121.500 MHz is forbidden for coordination tasks between air traffic controllers. This frequency is reserved only for managing emergencies in some specific cases.The use of Unicom frequency 122.800 MHz shall not be used for coordination tasks between air traffic controllers. This frequency is reserved only to all pilots to ensure self-information in non-controlled areas.
The chat window is the best choice for coordination between air traffic controllers. The direct communication is necessary when all other solutions described below are not suitable for traffic handling.
You can open it using:
After the opening of a new tab in the COMMBox window, you can chat directly with the chosen air traffic position by selecting the chat tab wanted.
You can add/remove other participants in this channel using the following commands:
Chat communication is the only direct communication media allowed during ATC exams.
The IVAO Intercom is a web-based application and it uses Skype communication software. It makes coordination easier with your neighbour controller as you can call and communicate by voice with your neighbouring air traffic controllers.
You should have a valid Skype-Account and be registered with Intercom. This can be used only between two registered controllers using Skype and their IVAO profile updated with the Skype account. This service is free and every controller can participate.
Intercom is the alternative of the direct communication using the IvAc chat window. The text based communication is replaced by vocal communication using Skype.
The ATC tab channel is the best choice for broadcasting general information to all controllers and observers using IvAc. This channel is a global channel for all ATC, and you must use English as chat language.
This channel is not suitable for coordination between two air traffic positions handling their own traffic. All other controllers connected are not concerned with specific coordination tasks between two air traffic controllers far from their position.
Labels are used to minimize the transmission of the clearance parameters by chat message between air traffic controllers.
Assuming a target will enable the controller to amend the label inputs. These labels can be read by all other air traffic controllers or observers in the network if the target is located inside their display range. Each aircraft is one unique target on screen.
The following variables can be manipulated in the label using the IvAc software:
The letters of agreement named LoA in IVAO are documents which define agreed procedures between two or several controlled positions in order to facilitate traffic handling and exchange.
They are created to simplify coordination procedures in some predefined conditions in order to minimize the coordination chats. They are created when needed (example between two divisions for traffic exchange or two large control areas with multiple routes).
When you open a position, you must communicate that to adjacent air traffic controllers. These tasks are applicable:
Do not force act with IvAc the traffic assumed by another controller. Ask the controller to transfer this aircraft, this is coordination!
When you close a position, you must communicate that to adjacent air traffic controllers. These tasks are applicable:
Before closing a position, all traffic under your control shall be transferred to the next suitable air traffic controller or shall be released to UNICOM 122.800 frequency.
The goal is to communicate the events in your area of responsibility that affects the neighbour air traffic controllers.
Situations which require communication can be any of the following:
The goal is to coordinate a clearance with another air traffic controller before transmission to an aircraft, if and when it becomes effective within another unit's area of responsibility.
The receiving controller shall, if necessary, inform the transferring controller of:
The flight data sent in a coordination message can include parameters like:
Using IvAc, some flight data are easy to find, and air traffic controllers cannot give evident information when traffic is identified by all concerned controllers.
IvAc offers the option to amend many different variables which can be entered into a label of each specific target:
The variables in the label provide information about clearances for each specific target to other controllers without direct communication.
The variables are only presented in the label for each target when they are filled out:
All variables can be manipulated by every controller position (IvAc does not limit your ability to manipulate label inputs). However the following are most common for each position:
This label is a letter code located on each target when an air traffic controller fills them:
This label is showing the air traffic controller who assumes this aircraft. With this label, you do not need to communicate that you assume the aircraft. The positions as defined as follows:
It is important to assume any traffic under your control using IvAc in order to notify to neighbour controllers that you take this traffic under your active control. Do not force-act traffic which is assumed by an active controller
When a change of frequency is required, instruct the aircraft to contact or monitor:
Transfer radio communications immediately prior to an aircraft entering the receiving controller's area of responsibility unless otherwise coordinated. If an aircraft is unable to maintain a listening watch on the controller frequency while remaining on the ATC frequency, resolve all conflicts with the aircraft.
Coordination procedures for radio communication transfer may be outlined in unit directives or agreements.