Primary Flight Display (PFD)
The primary flight display shows the basic flight instruments, such as the airspeed indicator, the altimeter, the heading indicator, and course deviation indicator. A small map called the "inset map" can be enabled in the corner. The buttons on the PFD are used to set the squawk code on the transponder. The PFD can also be used for entering and activating flight plans. The PFD also has a "reversionary mode" which is capable of displaying all information shown on the MFD (for example, engine gauges and navigational information). This capability is provided in case of an MFD failure.
Read more about this topic: Garmin G1000
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