This tool, developed for ICAO, is intended to enable a consistent assessment to be made of the severity of runway incursion events.

For the purpose of global harmonisation and effective data sharing, runway incursion severity has been divided into 5 categories A to E where A is the most critical.

The RISC is available for download, free of charge, from http://www.icao.int/safety/fsix/Documents/Risc_4.2.zip.

Further Reading

• ICAO Doc 9870 App H - Runway Incursion Severity Classification (RISC) Calculator