TCAS Annunciations
TFC (cyan) – Indicates TFC selected on EFIS control panel in expanded MAP,
center MAP, expanded APP and expanded VOR.
TCAS TEST (cyan) – TCAS in test mode.
TA ONLY (cyan) – TCAS TA mode only.
TCAS OFF (amber) – TCAS off.

Offscale (red or amber)
TA (amber) or RA (red) is beyond the selected display range and TFC is selected on the EFIS control panel.
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10.11.70  March 28, 2005

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

Traffic (red or amber)
Displayed during a TA (amber) or RA (red) condition whether or not TFC is selected on the EFIS control panel.

No–Bearing Messages (red or amber)
Textual description of TA (amber) or RA (red) traffic with no associated bearing.
Message provides traffic type, range in NM, altitude and a vertical motion arrow.
A maximum of two messages can be displayed simultaneously.
TFC selected on the EFIS control panel.

Look-Ahead Terrain Messages (GPWS)

Terrain Status Annunciation (amber)
TERR FAIL – Look-ahead terrain alerting and display have failed.
TERR POSS – Look-ahead terrain alerting and display unavailable due to position
uncertainty.
TERR INHIBIT – GPWS terrain inhibit switch in TERR INHIBIT position.

Terrain Mode Annunciation (cyan)
TERR – Terrain display enabled (manual or automatic display). TERR TEST – GPWS is operating in self-test mode.
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Flight Instruments, Displays -PFD/ND – Displays 737 Flight Crew Operations Manual

Terrain Range Status Annunciation (amber)
TERR RANGE DISAGREE –
.
terrain display enabled, and

.
terrain output range disagrees with selected EFIS control panel range. MAP/TERR RANGE DISAGREE –

.
terrain display enabled, and

.
terrain output range disagrees with selected EFIS control panel range, and

.  
map display output range disagrees with selected EFIS control panel
range.

Predictive Windshear System (PWS) Message

PWS FAIL Annunciation (amber)
Predictive windshear alerting and display have failed.
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10.11.72   March 28, 2005
Flight Instruments, Displays -PFD/ND – Displays

Navigation Displays – Failure Indications and Flags
Dashes replace numbers if there is no computed information. Failure flags replace symbols or failure messages are displayed, as appropriate.
Expanded MAP, Center MAP, Expanded APP, Expanded VOR Modes
YA613, YA626, YC153, YC154, YK101 - YK104

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March 28, 2005  10.11.73
Flight Instruments, Displays -PFD/ND – Displays

YA721 - YA809, YC411 - YD655

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10.11.74  June 1, 2005

Flight Instruments, Displays -PFD/ND – Displays
YA686, YA687

Track Failure Flag (expanded and center MAP modes) YA613, YA626, YA721 - YK104
Track or heading display has failed.

Heading Failure Flag (expanded and center MAP, expanded APP and expanded VOR modes) YA686, YA687
Heading display has failed.

Weather Radar Annunciations (expanded and center MAP, expanded APP, expanded VOR modes)
WXR FAIL – Weather radar has failed. No weather data are displayed.
WXR WEAK – Weather radar calibration fault.
WXR ATT – Attitude stabilization for antenna has been lost.
WXR STAB – Antenna stabilization is off.
WXR DSP – Range data input has failed. Only displayed in WXR TEST

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

TCAS Failure Flag (expanded and center MAP, expanded VOR, expanded APP, PLAN modes)
TCAS has failed.

ADF 1 or VOR 1 and VOR 2 Failure Flag (expanded and center MAP,
expanded APP, expanded VOR modes) YA613 - YA687, YC153, YC154, YK101 - YK104
 ADF or VOR display has failed.

ADF 1 and ADF 2 or VOR 1 and VOR 2 Failure Flag (expanded and
center MAP, expanded APP, expanded VOR modes) YA721 - YA809, YC411 - YD655
ADF or VOR display has failed.

DME 1 and DME 2 Failure Flag (expanded and center MAP, expanded APP, expanded VOR modes)
Selected VOR DME display has failed.
　
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