What is the role of an engine fire detection and suppression system?

• A. Detect fire via sensors and discharge extinguishing agents to suppress the fire rapidly and protect the aircraft.
• B. Increase fuel flow to cool the flame.
• C. Ventilate the engine compartment.
• D. Adjust turbopump speed to reduce temperature.

Answer: (A)

Engine fire detection and suppression systems are designed to detect fire quickly and automatically discharge extinguishing agents to suppress it and protect the aircraft. Detectors monitor the engine nacelle and surrounding bay for heat or flame; when a fire is sensed, the system releases extinguishing agent into the affected area to blanket the flame, cool the combustion zone, and starve the fire of fuel and oxygen. This rapid action helps prevent damage to the engine and surrounding structures and allows safe continued operation or shutdown as needed. Increasing fuel flow would feed the fire, ventilating the compartment only removes smoke rather than extinguishing, and adjusting turbopump speed doesn’t address the fire directly.