Abstract: An aircraft tank system includes a tank cell for receiving fuel, a fuel line that connects the tank cell to a fuel inlet connection, and an aeration/deaeration device that for aeration/deaeration of the tank cell connects the tank cell to the environment. A shut-off valve of the aeration/deaeration device is adapted in an open position to open a connection between the tank cell and the environment and in a closed position to interrupt the connection between the tank cell and the environment. The aircraft tank system further includes an exhaust air outlet connection, which is connected to the aeration/deaeration device and which is adapted during filling of the tank cell with fuel to be connected to an aeration/deaeration connection of a storage tank of a refueling unit.

Abstract: An aircraft tank system (10) comprises a tank cell for receiving fuel, a fuel line (12) that connects the tank cell to a fuel inlet connection (14), and an aeration- and/or deaeration device (16) that for aeration and/or deaeration of the tank cell connects the tank cell to the environment. A shut-off valve (18, 20) of the aeration- and/or deaeration device (16) is adapted in an open position to open a connection between the tank cell and the environment and in a closed position to interrupt the connection between the tank cell and the environment. The aircraft tank system (10) further comprises an exhaust air outlet connection (24), which is connected to the aeration- and/or deaeration device (16) and which is adapted during filling of the tank cell with fuel to be connected to an aeration- and/or deaeration connection (32) of a storage tank (28) of a refueling unit (26).