What does 'maint comp fail' mean?
The Maintenance Data Computer has failed.
The Maitenance Data Computer (MDC) tracks and records aircraft system information, and monitors individual aircraft systems subcomponents down to the sensor level. The MDC monitors and records the performance of approximately 256 individual components. These components and their operational condition can be displayed on any of the cockpit displays and enable the pilot to monitor the status of aircraft systems and to initiate a buiit in test of components. The MDC also controls some helicopter systems eg avionics cooling fans and fuel prime pumps.