How is the ARFF index determined?

• A. ARFF index is the requirement for ARFF based on longest a/c 5 or more daily departures
• B. ARFF index depends on runway length
• C. ARFF index is based on number of fire trucks
• D. ARFF index is based on weather patterns

Answer: (A)

ARFF index is set by how large the largest aircraft the airport serves is and how busy the airport is in terms of daily aircraft movements. This combination determines the firefighting resources, equipment, and staffing required to respond effectively. The option noting the longest aircraft and daily departures aligns with this, since both aircraft size and traffic volume drive the ARFF category. Runway length, number of fire trucks, or weather patterns don’t determine the ARFF index.