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UK Civil Aviation Regulations

These are published by the CAA on our UK Regulations pages. EU Regulations and EASA Access Guides published by EASA no longer apply in the UK. Our website and publications are being reviewed to update all references. Any references to EU law and EASA Access guides should be disregarded and where applicable the equivalent UK versions referred to instead.

The objective of study CAA Paper 2009/05: Aircraft Maintenance Incident Analysis was to analyse a selection of maintenance related events on jet aircraft above 5,700kg MTOW, captured and stored under the requirements of the CAA’s Mandatory Occurrence Reporting (MOR) scheme to identify trends, themes and common causes or factors.

This Paper comprises an updated version of CAA Paper 2007/04, extending the study period by one year to end 2006. Overall, the conclusions of the previous study are unchanged, except that an increasing trend in the total number of maintenance related MORs is now apparent.