Sector demographics and activity

Based on current data form the defect reporting portal, there were 68 reports in January 2026. This is:

3% down from January 2025
11% down from January 2024.

A graph of the number of occurrences each year from 2014 to 2025 — Figure 1 - Annual occurrences (2014-2025), Source: CASA Enterprise Aviation Process (EAP)

A graph of the monthly defects reported with a 4 months moving average. It is generally trending downwards. — Figure 2: Monthly defects (bars) and 4-month rolling average (line), Source: CASA Enterprise Aviation Process (EAP)

A graph of the number of defects reported by aircraft model and engine make. — Figure 3 - Aircraft model / engine make, Source: CASA Enterprise Aviation Process (EAP)

A graph of the number of defects for each type of aircraft part, divided by the Level 1 JASC code for them — Figure 4 - Part JASC Code Level 1, Source: CASA Enterprise Aviation Process (EAP)

A graph of the number of defects for each type of aircraft parts, sorted by their level 2 JASC code — Figure 5 - Part JASC Code Level 2, Source: CASA Enterprise Aviation Process (EAP)

Maintenance Activities Occurrences Level 1 (2014 – 2025)

We analysed ATSB occurrences rates for maintenance activities. There were 91 accidents with 0 fatal accidents. There were also 130 serious incidents and 2081 incidents recorded.

A graph of the number of incidents recorded each year since 2014 — Figure 6: Annual incidents (2014-2025), Source: ATSB Occurrence Database&

A graph of the number of serious incidents each year since 2014 — Figure 7: Annual serious incidents (2014-2025), Source: ATSB Occurrence Database

A graph of the number of accidents each year between 2014 and 2025 — Figure 8: Annual accidents (2014-2025), Source: ATSB Occurrence Database

Source: ATSB Occurrence Database
ERC	Accident	Serious Incident	Incident	Total
Very High	6	7	2	392
High	255	59	78	7,237
Medium	596	690	2912	4,198
Low	60	82	7,095	10,227
No accident outcome	5	25	10,197	15
Total	922	863	20,284	22,069

Published date: 24 April 2026

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Sector regulations

Learn about the rules and requirements that apply to maintenance activities profile.
Sector demographics and activity

Learn about the demographics and activity of the maintenance activities sector for the Sector Safety Risk Profile.
Occurrence types

Occurrence types from the maintenance activities sector between 2014-2025 as part of the Sector Safety Risk Profile.
Occurrences across aircraft models

Occurrence for different models of aircraft from the maintenance activities sector between 2014-2025 as part of the Sector Safety Risk Profile.
Sector threats, issues and hazards

Find a list of sector threats, issues and hazards identified for the maintenance activities sector.

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