From Aviation Herald, A320s have reported 6 issues in just last three days. What are some possible reasons for such bugs ,like AI 405 had a hydraulic leak, and B6-907 had a hydraulic failure. Are the airline engineering teams to be blamed for such incidents?
A statement like "model X has reported Y failures in Z days" is not relevant in aviation. In aviation what is relevant is the mean time between failures [meaning the same type of failure] (in short MTBF): it is the mean time, fleet-wise, between two failures (example, two engine failure concerning the same component). The relevant part, is the "fleet-wise": if there would be only 1 A320 in operation, 2 issues a day would bee too many indeed, with hundreds (thousands?) of A320s in service, flying hundreds of hours each day all over the world, I would say that 2 issues a day is a quite decent record.