AIRCRAFT AND METHOD FOR MONITORING A CONCENTRATION OF FIRE-EXTINGUISHING AGENT IN A CARGO HOLD

An aircraft has: a cargo hold, a first fire-extinguishing agent container with a fluid-like fire-extinguishing agent, a first line section extending from the first container to the cargo hold, such that the fire-extinguishing agent can flow from the first container into the cargo hold, a controllable valve coupled to the first line section for controlling a flow of fire-extinguishing agent through the first line section, a concentration sensor arranged in the cargo hold for sensing a concentration of the fire-extinguishing agent in the cargo hold, and a monitoring unit. The concentration sensor is coupled to the monitoring unit for transmitting to the monitoring unit a concentration sensor signal representing the sensed concentration of the fire-extinguishing agent in the cargo hold. The monitoring unit is coupled, to the valve for controlling the valve. The monitoring unit is configured to control the valve on the basis of the sensed concentration.