We use necessary cookies to make our website work. We'd also like to use optional cookies to understand how you use it, and to help us improve it.
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.
Choose a service to log in to:
Access our online services
Step 1 to build the bowtie focusing on aspects with the potential to cause injuries, damage or loss
Step 2 which describes the undesired system state
Step 3 showing possible direct causes
Step 4 in building the bowtie showing possible direct outcomes resulting in loss or damage
Step 5 to the bowtie to add any measures taken to prevent the threat and top event
Step 6 to the bowtie to add any measures taken to prevent the consequences
Step 7 showing a condition that affects the performance of the controls in place
Step 8 is adding any measure taken to prevent the escalation factors impacting the controls
Please enter your comments below, or use our usual service contacts if a specific matter requires an answer.
Fields marked with an asterisk (*) are required.