Air Berlin's insolvency administrator, Lucas Flöther, brought a lawsuit against the operator of Keflavik Airport, Isavia. In the name of the crowd, the company is sued for payment of 800.000 euros in a German court. Isavia defends herself against this and wants to process the case through.

On October 19, 2017, Keflavik Airport put the Airbus A320 with the registration D-ABDX on the chain due to unpaid bills. Air Berlin took the view that the claims should have been registered with the insolvency administrator. Isavia was very little interested in that, which is why Air Berlin paid the outstanding debts on October 30, 2017 in order to be able to obtain the approval of the Airbus A320. This machine is now flying as an OE-IZT for Easyjet.

Lucas Flöther later requested the payment back to Isavia, as Air Berlin should not have made it under German insolvency law. In such cases, trustees can claim money back. Since Isavia sees things completely differently, Flöther applies for administrative assistance to an Icelandic court. This was refused, which is why a lawsuit has now been filed in Germany. To what extent a possible judgment in Iceland is enforceable is unclear.