A-320 Datalink ATC and Company fault
 

What causes these ATSU multiple faults, ECAM Datalink and Company faults.
also combined with the ADS-B?

Related to the ground stations ?

Also is it related to a software problem ?

There is a modification right that fixes this right?

annoying ECAM pings.

Thanks in advance

i hate this ! besides APU inop MEL the worst on the bus !

There is a lot going on with this. Generally the majority of faults are with the system picking up two similar strength signals at the same time. It will always default to the stronger signal but if that fluctuates then it will cause a fault. A good example is at EGGW, the a/c frequently gets a fault caused by atmospherics when STN briefly becomes the stronger signal. As this fluctuates the a/c swaps back and forth a few times then gives up. EGGW has tried to fix it by moving the antenna to a better location which has helped a lot. It also happens for similar reasons in flight with ground station signals (especially in a high provision area where there are more signals to choose from). Don't be tempted to enter the MCDU and change the provider though as it is immensely expensive if your airline does not have a contract with the new provider, and whilst it may start giving you weather you will lose any company comms facilities.

Check the mod state of VHF 3.

https://ext.eurocontrol.int/WikiLink/index.php/VDR_deafness

https://ext.eurocontrol.int/WikiLink/index.php/Service_Bulletins_for_VDR_Deafness_Update