737 Flight Crew Operations Manual
Flight Instruments, Displays -
Head-Up Display System –
Controls
Boeing Proprietary. Copyright © Boeing. May be subject to export restrictions under EAR. See title page for details.
D6-27370-866-EGP 10.17.13
The forward breakaway position allows the combiner glass to be displaced
forward from its normal operating position. The combiner glass can be returned
from the breakaway position by rotating the stow lever away from the pilot and
rotating the glass aft to the normal operating detent.
Note: If the combiner glass is not in the normal operating position (detent) the
ALIGN HUD message will display when in IMC and VMC modes. If the
ALIGN HUD message can not be extinguished by grasping and moving
the combiner glass forward or aft, then back into its normal operating
detent, IMC and VMC modes should not be used.
The ALIGN HUD restriction does not apply to use of the HUD in PRI mode.
March 27, 2014
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