muc_maintenance on Instagram: "On the Airbus A320, a cockpit printer - officially called the Onboard Printer Unit (OPU) - is an optional feature rather than standard equipment. It is usually installed in the center pedestal between the captain and first officer and is connected to the ACARS system, allowing incoming messages such as weather reports, flight plan updates, airline operations messages, or ATC clearances via CPDLC to be printed. The unit uses thermal paper rolls, making it compact an