Flying is an activity full of challenges and risks. Among the various risks faced by flying, fire poses a more serious threat to the safety of aircraft. In the 1980s, there were a number of serious accidents in the Air Force of a certain country. The investigation results showed that the high temperature ducts of the aircraft engines leaked and caused fires. Due to the lack of relevant fire protection system design, accidents of aircraft destruction and death occurred. On September 8, 2015, the left engine of a British Airways Boeing 777 aircraft caught fire after takeoff. The aircraft's fire detection system gave an alarm within 5 seconds. The crew correctly handled the aircraft. All 157 passengers and 13 crew members on board were evacuated safely. The fire protection system played a decisive role in the handling of this accident.

This requires the aircraft's fire-fighting system to have high fire-fighting efficiency, and strive for a successful fire-fighting under the condition of limited fire-fighting resources; faster detection speed, locate the fire point in the shortest time, and rescue as soon as possible; strong environment Adaptability, able to operate reliably in all phases of the entire flight. The principle of active fire protection is "prevention" in the final analysis. Measures such as fire zone isolation, material fire resistance or fire prevention, and separation or isolation of fire factors are taken to reduce the possibility of fire and improve the resistance of aircraft structures, airborne equipment and accessories to flames. The ability to eliminate the source of fire and minimize the possibility of fire hazards.