737 Flight Crew Operations Manual
Flight Instruments, Displays -
PFD/ND – System Description
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10.21.6 D6-27370-866-EGP
3 Upper Display Unit Fails
If the upper display unit fails, the primary engine display automatically moves to
the lower display unit and the upper display unit blanks. If the secondary engine
display is already on the lower display unit, a compact engine display is then
displayed.
Note: There is no automatic switching for a lower DU failure.
September 28, 2006