Fix FS2004 ATC not responding to an Airbus by checking COM1, electrical power, radio syncing, panel gauges and the correct FSUIPC module.
FS2004 ATC usually ignores an Airbus because COM1 is not the active radio, the aircraft’s avionics bus is unpowered, or an add-on panel is not synchronising its custom radio with FS9. Power the aircraft, select VHF1/COM1, tune the correct frequency, then test the same flight in a default aircraft.
FS2004 includes no stock Airbus, so every Airbus uses third-party panel and gauge logic. That makes an aircraft-specific fault much more likely than a failure of FS9’s ATC engine.
How to restore ATC communication
- Separate an ATC fault from an audio fault. Make a call through the ATC window and watch for a written reply. If the controller answers in text but no speech plays, ATC is responding; use our FS2004 ATC voice and sound checks instead.
- Repeat the test in a default aircraft. Load a default Cessna at the same airport, use the ATC window to select the facility and make a call. If that aircraft also receives no response, follow our broader radio and ATC troubleshooting checklist. If it works, return to the Airbus-specific checks below.
- Supply the avionics bus properly. In a systems-modelled Airbus, switching on the batteries may not power every radio. Connect external power or start the APU, place the required generator online and confirm that the radio-management panel is powered. Simpler add-ons may instead depend on FS9’s underlying master-battery and avionics-master variables. Our A320 electrical-bus guide for simulator pilots explains which power sources should feed the radios.
- Use active COM1. FS2004’s built-in ATC communicates through COM1. Put the required frequency in the active field rather than standby, and select VHF1 or COM1 for transmission if the Airbus panel models that control. A frequency left on VHF2 will not produce the expected stock ATC contact.
- Choose a valid ATC menu call. Stock FS2004 ATC does not recognise speech from a microphone; it responds to the numbered choices displayed in the ATC window. Use the simulator’s facility listing rather than an external chart, because replacement airport scenery may contain different frequencies.
- Check the complete panel installation. Missing gauges or modules can leave a radio display illuminated without updating FS9’s actual COM1 value. Reinstall the complete Airbus or panel package according to its documentation, including any stated dependencies, then restart FS2004 fully.
Why does ATC work in default aircraft but not the Airbus?
If default aircraft can contact ATC, the Airbus panel is failing to power, tune or synchronise FS2004’s internal COM1 radio.
| Symptom | Likely cause | What to do |
|---|---|---|
| ATC fails only after a cold-and-dark start | The battery, generator or avionics bus is still offline | Complete the add-on’s electrical start procedure and confirm VHF1 power |
| The radio displays the right frequency but ATC remains silent | The custom radio gauge is not writing that frequency to FS9 COM1 | Repair or replace the panel with a version intended for FS2004 |
| Changing from VHF2 to VHF1 restores ATC | The frequency was tuned on the wrong radio | Keep the FS9 ATC frequency active on COM1/VHF1 |
| Every aircraft has the same problem | The fault is global rather than Airbus-specific | Check ATC settings, radio tuning, controls and sound configuration |
| Written replies appear without speech | The communication works, but ATC audio does not | Troubleshoot voices, sound devices and radio volume |
What if the Airbus radio display shows the correct frequency?
A convincing radio display does not prove that FS2004’s internal COM1 variable has changed. Advanced panels can draw their own digits and simulate radio-management logic separately from the simulator’s stock radio system.
If the aircraft provides a conventional FS2004 radio pop-up, tune COM1 there as a diagnostic test. When that restores contact, the custom Airbus radio gauge or one of its dependencies is the fault. A common mistake is installing only the aircraft model and textures while omitting the panel’s gauges or modules.
Can FSUIPC fix Airbus ATC communication?
FSUIPC can fix the problem only when the Airbus panel explicitly depends on it for radio or electrical-system variables. It is not required by FS2004’s standard ATC system and should not be installed blindly as a general ATC repair.
Check the aircraft documentation and use an FS2004-compatible FSUIPC 3 release, not a module intended for a newer simulator. Our instructions for installing the correct FSUIPC module in FS2004 cover its location and the checks to make after installation.
Does FS2004 ATC require a flight plan?
Normal tower, ground and local VFR contacts do not require a flight plan, but an IFR clearance requires an IFR plan to be loaded. The available calls also depend on your position and the airport’s facilities.
An uncontrolled airfield has no tower controller to answer, and a distant facility may be outside radio range. If the expected contact does not appear in the ATC window, confirm that you are at the intended airport, that its scenery provides that service and that the correct COM1 frequency is active.