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Occurrences involving commercial air transport aeroplanes are regularly the result of using incorrect data. That states The Dutch Safety Board in the report ‘Takeoff met erroneous takeoff data’ which is also addressed in this report.

Chair person Chris van Dam: ‘Fortunately, not every occurrence leads to an actual accident, but the industry can learn from a near miss as well. Learning lessons helps airlines reduce the number of incidents. This is why the Safety Board values a focus on learning.’

The main lesson learnt from the Dutch Safety Board’s investigation was that the safety in this type of occurrence increases as more data and more different data sources are used. Another lesson learnt was that airlines can prioritize risks that are difficult to identify or occurrences that take place infrequently, but have potentially major consequences. This helps them in their considerations on what they should or should not investigate and thus airlines can take additional protective measures to reduce risks.

About the Quarterly Aviation Report

The Dutch Safety Board publish four times per year the report with occurrences. The Dutch Safety Board is obliged to investigate incidents involving aircraft on or over the territory of the Netherlands or incidents involving Dutch aircraft over the high seas. Is a description of the events sufficient to draw lessons? Then the Board does not conduct further investigation.


The Aviation Quarterly Report Q3 contains the following content:

  • chapter 1 ‘occurrences under investigation’ with 11 occurrences
  • chapter 2 ‘Occurrences under investigation (abroad)’ with 7 occurrences
  • chapter 3 ‘completed investigations’ with 10 occurrences

More about investigations into aviation incidents can be found in the Quarterly Aviation Report Q3 2023.

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