Data communications network for an aircraft, comprising: a first branch for establishing a wireless data connection to a first group of end devices via a first group of connection units; a primary control unit connected to the first branch; a backup control unit connected to the first branch; wherein the primary control unit is configured for data transmission to and from the first group of end devices via the first group of connection units of the first branch; wherein the backup control unit is configured for detecting an operating state of the primary control unit and for taking over data transmission to and from the first group of end devices via the first group of connection units of the first branch from the primary control unit in case of a failure of the primary control unit; wherein the first group of connection units comprises multiple connection units (202, 204, 206) which are connected to the first branch and which are configured for establishing a wireless data connection to at least one of the end devices from the first group of end devices; wherein the primary control unit is configured for managing the data communications network and the data transmission to and from the end devices and for supplying electrical energy to the first branch; further comprising a second branch for establishing a wireless data connection to a second group of end devices via a second group of connection units; wherein the second group of connection units comprises multiple connection units (212, 214, 216) which are connected to the second branch and which are configured for establishing a wireless data connection to at least one of the end devices of the second group of end devices; wherein the primary control unit is connected to the second branch; wherein the primary control unit is configured for data transmission to and from the second group of end devices via the second group of connection units of the second branch; wherein the backup control unit is configured for taking over data transmission to and from the second group of end devices from the primary control unit in case of a failure of the primary control unit; wherein the end devices of the first group of end devices are connected to the primary control unit via both, the first group of connection units and via the second group of connection units. a first branch for establishing a wireless data connection to a first group of end devices via a first group of connection units; a primary control unit connected to the first branch; a backup control unit connected to the first branch; wherein the primary control unit is configured for data transmission to and from the first group of end devices via the first group of connection units of the first branch; wherein the backup control unit is configured for detecting an operating state of the primary control unit and for taking over data transmission to and from the first group of end devices via the first group of connection units of the first branch from the primary control unit in case of a failure of the primary control unit; wherein the first group of connection units comprises multiple connection units (202, 204, 206) which are connected to the first branch and which are configured for establishing a wireless data connection to at least one of the end devices from the first group of end devices; wherein the primary control unit is configured for managing the data communications network and the data transmission to and from the end devices and for supplying electrical energy to the first branch; further comprising a second branch for establishing a wireless data connection to a second group of end devices via a second group of connection units; wherein the second group of connection units comprises multiple connection units (212, 214, 216) which are connected to the second branch and which are configured for establishing a wireless data connection to at least one of the end devices of the second group of end devices; wherein the primary control unit is connected to the second branch; wherein the primary control unit is configured for data transmission to and from the second group of end devices via the second group of connection units of the second branch; wherein the backup control unit is configured for taking over data transmission to and from the second group of end devices from the primary control unit in case of a failure of the primary control unit; wherein the end devices of the first group of end devices are connected to the primary control unit via both, the first group of connection units and via the second group of connection units.