.
round dial displays below 1000 feet AGL

.
pointer indicates selected radio altitude minimums

.  
the circumference of the dial is added to, or taken away from, to depict the airplane’s radio altitude

.  
the remaining perimeter and pointer turn amber and flash for 3 seconds when below radio altitude minimums, the numeric readout does not flash.

Copyright . The Boeing Company. See title page for details.
10.11.26   June 1, 2005

Flight Instruments, Displays -PFD/ND – Displays
Traffic Alert and Collision Avoidance Indications
YA613 - YA809, YC411 - YK104

YC153, YC154

Traffic Alert and Collision Avoidance System Pitch Command (red)
The area(s) inside the red lines indicate(s) the pitch region(s) to avoid in order to resolve the traffic conflict. The airplane symbol must be outside the TCAS pitch command area(s) to ensure traffic avoidance. Refer to Chapter 15, Warning Systems.
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Flight Instruments, Displays -PFD/ND – Displays

GPWS Annunciations
YA613 - YA809, YC411 - YK104

YC153, YC154

GPWS Annunciations (red) Displays WINDSHEAR or Pull UP alert. Refer to Chapter 15, Warning Systems.
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10.11.28  June 1, 2005
Flight Instruments, Displays -PFD/ND – Displays

PFD – Altitude Indications Altitude Indications– General
The altitude indication displays ADIRS altitude and other altitude related information.

Selected Altitude Bug (magenta)
Indicates the altitude set in the MCP altitude window.
When the selected altitude is off scale, the bug is parked at the top or bottom of
the tape, with only one half the bug visible.

Metric Digital Readout (readout and box–white, metric symbol–cyan)
Displays current altitude in meters when MTRS is selected on the EFIS control panel.
Copyright . The Boeing Company. See title page for details.
Flight Instruments, Displays -PFD/ND – Displays 737 Flight Crew Operations Manual

Current Altitude
Displays current altitude in increments of thousands, hundreds and twenty feet:
.  
for positive values of altitude below 10,000 feet, a green crosshatch
symbol is displayed

.
a negative sign appears when altitude below zero feet is displayed

.
readout box becomes bold to denote altitude acquisition

.  
readout box is highlighted in amber and flashes to denote altitude
deviation (refer to Chapter 4, Automatic Flight and Chapter 15, Warning
Systems).

Metric Selected Altitude Readout (readout–magenta, metric symbol–cyan)
Displays MCP altitude in meters when MTRS is selected on the EFIS control panel.

Selected Altitude (magenta)
Displays the altitude set in the MCP altitude window.
The selected altitude box appears in white during an altitude alert. For more information, refer to Chapter 15, Warning Systems.
PFD Barometric Indications
YA613 - YA687, YC153, YC154, YK101 - YK104

YA721 - YA809, YC411 - YD655

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10.11.30   June 1, 2005

Flight Instruments, Displays -PFD/ND – Displays 737 Flight Crew Operations Manual

Barometric Settings (green)
Indicates the barometric setting in either inches of mercury (IN) or hectopascals

(HPA) as selected on the EFIS control panel.
Display is boxed amber if numeric is set and airplane is climbing above transition
altitude, or if STD is set and descending below transition flight level.

Preselected Barometric Setting (white)
STD is displayed when the Barometric Standard (STD) switch is selected on the

EFIS control panel.
When STD is displayed, a barometric setting can be preselected on the EFIS
control panel barometric selector and is displayed in small white characters below
STD.

QFE Altitude Reference (green) YA721 - YA809, YC411 - YD655
Indicates QFE altitude reference if selected on the CDU APPROACH REF Page
or TAKEOFF REF Page 2/2.
When selected, QFE is boxed for 10 seconds.

The altitude tape is shaded green during QFE operation.
When QNH is selected, the green shading is removed; QNH is displayed for 10
seconds, then blanks.

When STD is displayed, QFE in small white characters is displayed below STD,
and a QFE altimeter setting can be preselected.

Copyright . The Boeing Company. See title page for details.
Flight Instruments, Displays -PFD/ND – Displays

Landing Altitude/Minimums Indications
　
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