A system comprising: an aircraft comprising a sensor, an aircraft component associated with the sensor, a first transmitter, and a first receiver; and a computing system remote from the aircraft, the computing system comprising one or more processors, a second transmitter, and a second receiver: wherein: the aircraft is configured to transmit, via the first transmitter, sensor data sensed by the sensor, to the computing system; the computing system is configured to: receive, via the second receiver, sensor data transmitted from the aircraft; process, using the one or more processors, the received sensor data to generate status data indicative of an operational mode of the aircraft component; and transmit, when the status data is indicative of an altered operational mode of the aircraft component, the status data to the aircraft via the second transmitter; and the aircraft is configured to indicate, based at least partially on the status data received by the first receiver, the altered operational mode of the aircraft component, characterised in that the computing system is configured to indicate, based at least in part on the status data, a further altered operational mode of the aircraft component, the further altered operational mode comprising a lower priority than the altered operational mode. an aircraft comprising a sensor, an aircraft component associated with the sensor, a first transmitter, and a first receiver; and a computing system remote from the aircraft, the computing system comprising one or more processors, a second transmitter, and a second receiver: wherein: the aircraft is configured to transmit, via the first transmitter, sensor data sensed by the sensor, to the computing system; the computing system is configured to: receive, via the second receiver, sensor data transmitted from the aircraft; process, using the one or more processors, the received sensor data to generate status data indicative of an operational mode of the aircraft component; and transmit, when the status data is indicative of an altered operational mode of the aircraft component, the status data to the aircraft via the second transmitter; and the aircraft is configured to indicate, based at least partially on the status data received by the first receiver, the altered operational mode of the aircraft component, characterised in that the computing system is configured to indicate, based at least in part on the status data, a further altered operational mode of the aircraft component, the further altered operational mode comprising a lower priority than the altered operational mode. the aircraft is configured to transmit, via the first transmitter, sensor data sensed by the sensor, to the computing system; the computing system is configured to: receive, via the second receiver, sensor data transmitted from the aircraft; process, using the one or more processors, the received sensor data to generate status data indicative of an operational mode of the aircraft component; and transmit, when the status data is indicative of an altered operational mode of the aircraft component, the status data to the aircraft via the second transmitter; and receive, via the second receiver, sensor data transmitted from the aircraft; process, using the one or more processors, the received sensor data to generate status data indicative of an operational mode of the aircraft component; and transmit, when the status data is indicative of an altered operational mode of the aircraft component, the status data to the aircraft via the second transmitter; and the aircraft is configured to indicate, based at least partially on the status data received by the first receiver, the altered operational mode of the aircraft component, characterised in that the computing system is configured to indicate, based at least in part on the status data, a further altered operational mode of the aircraft component, the further altered operational mode comprising a lower priority than the altered operational mode.