737 Flight Crew Operations Manual
Flight Instruments, Displays -
PFD/ND – Primary Flight Display
Boeing Proprietary. Copyright © Boeing. May be subject to export restrictions under EAR. See title page for details.
D6-27370-866-EGP 10.31.3
The localizer pointer and scale appear at the bottom of the attitude indication when
a valid signal is received. When the course deviation is slightly more than ½ dot,
the localizer mode is engaged and track is within 5 degrees of the MCP selected
course, the scale automatically expands. At low radio altitudes with autopilot
engaged the scale turns amber and the pointer flashes to indicate excessive
deviation. Below 1,000 feet AGL with LNAV engaged and LOC armed, the
localizer scale turns amber and the pointer flashes if the localizer is not captured.
Each pilot’s deviation alerting system self-tests upon becoming armed at 1500 feet
radio altitude. This self-test generates a two second LOC and G/S deviation
alerting display on each attitude indicator.
Below 2500 feet radio altitude with the localizer pointer in view, a rising runway
symbol comes into view. The symbol provides lateral guidance. At 200 feet radio
altitude, the symbol rises toward the airplane symbol.
Approach Minimums
The selected radio altitude or barometric approach minimums are set on the EFIS
control panel. They are displayed near the bottom left of the altitude display.
Radio Altitude
The current radio altitude is displayed in the bottom center of the attitude
indication area when radio altitude is below 2,500 feet AGL. The display turns
amber when the radio altitude is below the radio altitude minimums.
Altitude
Altitude is displayed on an altitude tape along the right side of the PFD. It is also
shown digitally in a window in the middle of the tape. When meters is selected on
the EFIS control panel:
• current altitude in meters is also shown above the altitude window
• selected altitude in meters is displayed above the altitude tape.
Selected altitude is displayed above the altitude tape and is boxed when
approaching the selected altitude. Selected altitude is also depicted with a bug on
the altitude tape.
The selected barometric approach minimum is indicated on the altitude tape with
a triangular pointer and a line when BARO minimums are selected. When RADIO
minimums are selected, the pointer is still set at BARO minimums but there is no
line.
September 26, 2013
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