The crash of an ATR 72-500 near Sao Paulo on August 9, 2023, in which all 62 passengers died, continues to raise questions. Initial findings from the Brazilian air accident investigation center CENIPA indicate a loss of control due to icing. The investigation is ongoing, but initial safety measures have already been taken.
According to published data, the crew of Voepass Flight 2283 lost control of the aircraft during the approach to Guarulhos Airport. Shortly after the de-icing system was activated, a stall occurred, which ultimately led to the crash. In a recent airworthiness directive, the European Aviation Safety Authority (EASA) pointed out a possible "dormant error" in the de-icing system of the ATR 72, which could lead to a loss of control under certain conditions.
The EASA has required operators of ATR aircraft to carry out more stringent functional tests on the pressure regulators and shut-off valves of the de-icing system. The revisions are intended to ensure that potential errors are identified at an early stage. Although the instructions do not directly relate to the accident, they are based on new findings on the design of the aircraft.
This incident also raises questions about the design and maintenance of older aircraft models. The manufacturer ATR has adjusted the maintenance specifications for the affected aircraft to minimize possible risks.
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