An aircraft comprises an airframe, an electric propulsion system, a number of battery pods, and an engagement system. The sensor module includes at least one partial cover having a recess on a second face of the chip carrier, such that heat from the chip carrier andor the sensor chip can be dissipated to the recess. The identifier of the placeholder type is in turn associated with descriptive data of an individualized data piece. a transaction control and a transaction identifier, to individual requests.