Replacing a PFD on a NAV III G1000
When a PFD is replaced it is important the new unit is installed into the MFD position of the instrument panel first. This step is necessary to prevent loss of existing data already on the PFD configuration module. The data is used for calibration and configuring of the new unit. We need be aware important information such as the aircraft tachometer time (tach time) is in stored on the configuration module. If the data is lost, there is no means to transfer it to the new PFD. The data must be preserved for accurate log book records and scheduling upcoming maintenance events for the airplane. Refer to the Garmin G1000 NAV III 190-00325-00 Revision T or later line maintenance manual for the Garmin Display Unit (GDU) software installation. With the new GDU in the MFD position, insert the current SD card containing system software into the upper slot of the display. On the MFD, power the system ON in configuration mode. When the ...