737 Flight Crew Operations Manual
Flight Instruments, Displays -
Head-Up Display System,
Symbology
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10.42.6 D6-27370-866-EGP
SYMBOL NAME MODE REMARKS
Flight director
guidance cue
PRI in
flight,
IMC
Functions similar to the flight
director, but is designed for
control of flight path.
Automatically displayed when
within 2° of pitch command or
radio altimeter indicates 50
feet.
The objective is to capture the
guidance cue inside the flight
path vector circle.
HUD guidance
cue
PRI
ground,
AIII
approach
Similar to flight director
guidance cue, but driven by
HUD computer.
During low visibility takeoff,
the cue provides localizer
tracking.
During AIII approach, the cue
provides approach and flare
commands.
The objective is to capture the
guidance cue inside the flight
path vector or ground roll
reference circle.
TO/GA pitch
target line
PRI in
flight
Displayed when greater than
65 knots, AFDS TO/GA mode
active and a valid pitch
command input of greater than
10 ° is received. Symbol
remains until TO/GA mode is
exited.
The objective is to place the
airplane reference symbol on
the target line.
March 27, 2014