What must airports maintain according to NFPA 403?

• A. Security personnel at all times
• B. The minimum required agent quantity for their ARFF Index
• C. Passenger capacity limits
• D. Runway clearances

Answer: (B)

Airports are required to maintain the minimum required agent quantity for their Aircraft Rescue and Firefighting (ARFF) Index as specified by NFPA 403. This standard emphasizes the importance of having a sufficient quantity of firefighting agents readily available to effectively respond to aircraft emergencies. The ARFF Index is determined based on the size and type of aircraft operating at the airport, which dictates the appropriate level of fire protection needed to ensure safety.

Maintaining the correct quantity of fire-suppressing agents is crucial because it directly impacts the airport's ability to handle emergencies efficiently, ensuring that firefighters can act swiftly to mitigate fires and protect lives. Compliance with this requirement helps airports maintain preparedness for incidents, demonstrating their commitment to safety and adherence to regulatory standards.

While security personnel, passenger capacity limits, and runway clearances are also important operational considerations for airports, they are not specifically mandated under NFPA 403. Therefore, ensuring the appropriate agent quantity reflects a critical focus on emergency response capabilities as outlined by the standard.