Occurrence types

Analysis of occurrence types showed that the most common occurrence type for accidents and serious incidents for Ground Handling 2015 to April 2025 were:

  • Dangerous Goods
  • Loading Related
  • Foreign Object Debris

With the changes in dangerous goods legislation, there has been an evident downwards trend in reported occurrences as seen in Figure 3 and Figure 4. This results in loading related occurrences being the highest reported occurrence.

 

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Occurrence Type Level 3 by Year
Figure 3 Occurrence Type Level 3 by Year
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Occurrence types – event risk classification (2010 to April 2025)
Figure 4a Occurrence types – event risk classification - 2010 to 2025
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Occurrence types – event risk classification (2015 to April 2025)
Figure 4b Occurrence types – event risk classification – 2015 to 2025

Analysing ATSB’s event risk classification (ERC) for occurrences in the sector helps to gain further clarity on the sector risk.

ERC scores the potential risk in an occurrence. Analysis of these occurrences shows that the top 6 occurrence types were:

  • Dangerous Goods
  • Loading related
  • Foreign Object Damage/Debris
  • Jet Blast / Prop / Rotor wash
  • Other Ground operations
  • Other Aircraft loading
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Ground Handling Taxonomy with ERC Values
Figure 5 Ground Handling Taxonomy with ERC Values

 

ERC vs Occurrence Category
ERCAccidentSerious IncidentIncidentTotal
Very High0202
High2111638
Medium1716267300
Low35915923
No accident outcome3310381044
Total442722362305

Note that an accident with an Event Risk Classification (ERC) score of "No Accident Outcome" indicates a situation where there is no potential for aircraft damage or injuries. This means the event, while still warranting review and possibly reporting, did not lead to any significant safety consequences. It signifies a situation that, while possibly a near miss or an incident, did not escalate into a situation causing harm or damage.

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ERC score by Year
Figure 6 ERC score by Year

 

Published date: 18 July 2025
Online version available at: https://www.casa.gov.au//index.php/operations-safety-and-travel/safety-management-systems/sector-safety-risk-profiles/ground-handling-sector-safety-risk-profile/occurrence-types
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