NEW content status Using our bowtie risk analysis See our list of bowtie analysis which shows a visual representation between threats and hazards. NEW content status Using our sector safety risk profiles Learn about using our safety risk profiles to understand risks and safety trends within sectors. Air transport operations profiles Small helicopter sector Read our sector safety risk profile for air transport operations using smaller helicopters. Smaller aeroplanes sector Read about our sector safety risk profile for air transport operations using smaller aeroplanes. Larger aeroplanes sector Read our sector safety risk profile for air transport operations using larger aeroplanes.