IVAO Software Configuration

Prior flying the first time online the installation of the IVAO Virtual Pilot Client is required. The download package includes TeamSpeak and MTL (Multiplayer Traffic Library). The package is available for download on the IVAO website. If you want to control the virtual Pilot client by hardware some additional integration work might be required.

IVAO Virtual Pilot Client - IvAp
IvAp is the IVAO client for pilots. It provides a user interface and manages data communication with the IVAO network. Furthermore IvAp coordinates TeamSpeak for voice communication between pilots and air traffic controllers. Offsets are provided for cockpit/panel builders to allow hardware integration.

Furthermore IvAp offers basic functionality for pushback control and a TCAS display.

The IvAp user interface

The IvAp message window shows the tuned and activated Comm frequency, enables the pilot to send the flight plan, to access ATIS and other flight relevant information. The right section has a readout of the selected squawk code, a switch for the transponder mode (STDBY and TX), and a pushbutton to connect to the IVAO network.

Controlling IvAp from Hardware
As mentioned above IvAp provides some offsets for the communication with cockpit hardware. IvAp reads these offsets every second and writes the offsets when the data has changed. By means of the offsets and some SIOC scripts I can control the following IvAp functions by the avionics hardware:

  • Squawk code and transponder mode (STDBY and TA/RA ('Mode Charlie')

  • Squwak ident pushbutton

  • Selection of either VHF1 or VHF 2 as active radio

For squawk code selection from hardware --> IvAp - Configuration, 'Read/write panel /cockpit offset.


Transponder panel with mode selection (STDBY TA/RA), encoders for squawk code setting, and ATC IDENT push button. TCAS Range is not used, because it is not supported by IvAp.

The MIC SELECTOR pushbuttons are used in a different way than at a real aircraft. With COMM1 / 2 I can switch between the VHF radios. The selected radio then gets active for the ATC voice communication. With the PTT1 / 2 push buttons the selection of the headset microphone (CAPT / FO) is managed.

The MIC SELECTOR panel with modified push button functionality.

For IFR clearance, taxi, and take-off I select the Ground as active frequency on the COMM2 (VHF2) radio. The Tower frequency on COMM2 as stand-by. On COMM1(VHF2) the Approach frequency is set as active frequency and Center is on stand-by. All what I have to do from Ground untill handed over to the Center is, I have to push twice the transfer buttons on the radios and switching once from COMM2 to COMM1. That makes the cockpit work much easier and gives more room to pay attention on other things than selecting  radio frequencies. During landing I do it vice-versa.

Traffic Collision Avoidance System
TCAS is to allow pilots to be aware of traffic which is becoming a threat to the required minimum separation that ATC should always apply between different aircraft. On IVAO, the TCAS function is also very useful, especially when flying in busy airspace or without any ATC coverage. I use the TCAS data from IVAO to show the online traffic situation around the aircraft at the PM Navigation Display. For this it is necessary that IvAp populates the TCAS data:

--> IvAp - Configuration, check 'Populate TCAS table'


Continued on next page >

Last Change: August 2011