This gives me no great pleasure, but....
https://centreforaviation.com/insigh...16-loss-279882
Eight successive years of operating loss
For airberlin 2015 was its eighth successive year of operating losses and its seventh net loss in the past eight years. The only net profit reported in that period, in 2012, was achieved only thanks to the sale of its topbonus loyalty programme to Etihad, shortly after Etihad became airberlin's biggest shareholder in late 2011.