VOR 1, 2 Failure Flag (expanded VOR mode)
VOR display has failed.
Reference VOR DME (expanded VOR mode) and Reference ILS DME (expanded APP mode)
Reference VOR or ILS DME display has failed.
MAP Failure Flag (expanded and center MAP, PLAN modes)
The related FMC generated map display has failed.
Vertical Track Failure Flag (expanded and center MAP modes)
FMC vertical track data are invalid.
ILS Glideslope Failure Flag (expanded APP mode)
ILS glideslope display has failed.
ILS Localizer Failure Flag (expanded APP mode)
ILS localizer display has failed.
Copyright . The Boeing Company. See title page for details.
10.11.76 June 1, 2005
Flight Instruments, Displays -PFD/ND – Displays 737 Flight Crew Operations Manual
Vertical Situation Display (VSD) YD651 - YK104
Range Disagreement Annunciations (amber)
MAP RANGE DISAGREE – Indicates selected range on the EFIS control panel
is different than the MAP display range.
TERR RANGE DISAGREE – Indicates selected range on the EFIS control panel
is different than the Terrain display range.
MAP/TERR RANGE DISAGREE – Indicates selected range on the EFIS control
panel is different than the MAP and Terrain display ranges.
Runway Data Annunciation (amber)
FMC runway data is not available.
Route Waypoints Modification Annunciation (white)
FMC active route is being modified. Only active waypoint is displayed.
VSD Failure Flag (amber)
VSD cannot be displayed.
Terrain Data Failure Annunciation (amber)
YK101 - YK104
EGPWS terrain data is not available.
YD651 - YD655
EGPWS terrain data is not available. Annunciation is replaced with VSD TERR
INHIBIT when GPWS control panel TERR INHIBIT switch is in the inhibit
position.
Copyright . The Boeing Company. See title page for details.
Flight Instruments, Displays -PFD/ND – Displays
ND Failure Flags – Center APP and Center VOR Modes
YA721 - YA809, YC411 - YD655
Copyright . The Boeing Company. See title page for details.
10.11.78 June 1, 2005
Flight Instruments, Displays -PFD/ND – Displays
YA613 - YA687, YC153, YC154, YK101 - YK104
Heading Failure Flag (center APP, center VOR modes)
Heading display has failed.
VOR Failure Flag (center VOR mode)
VOR display has failed.
ADF 1 and ADF 2 or VOR 1 and VOR 2 Failure Flag (center APP, center VOR modes)
YA721 - YA809, YC411 - YD655
VOR or ADF display has failed.
ADF 1 or VOR 1 and VOR 2 Failure Flag (center APP, center VOR modes)
YA613 - YA687, YC153, YC154, YK101 - YK104
VOR or ADF display has failed.
DME 1 and DME 2 Failure Flag (center APP, center VOR modes)
Selected VOR DME display has failed.
Copyright . The Boeing Company. See title page for details.
Flight Instruments, Displays -PFD/ND – Displays 737 Flight Crew Operations Manual
Reference VOR DME (center VOR mode) and Reference ILS DME (center APP mode)
Reference VOR or ILS DME display has failed.
ILS Localizer Failure Flag (center APP mode)
ILS localizer display has failed.
ILS Glideslope Failure Flag (center APP mode)
ILS glide slope display has failed.
Copyright . The Boeing Company. See title page for details.
10.11.80 March 28, 2005
737 Flight Crew Operations Manual
Flight Instruments, Displays Head-Up Display System - Displays Chapter 10 Section 12
This Section Applies to YC153, YC154
System Components
1
2
4
3
1 Overhead Unit
Contains the CRT and projection optics to display the symbolic image on the combiner.
2 Combiner
Combines displayed flight symbology with the pilot’s view through window No. 1.
3 Control Display Unit (CDU)
Used for data entry and to select modes of operation.
4 Annunciator
Provides system status and warning annunciations.
Copyright . The Boeing Company. See title page for details.
Flight Instruments, Displays -Head-Up Display System -Displays
737 Flight Crew Operations Manual
Combiner Display
The combiner displays symbology and fault indications for the HUD system. Display modes of operation include:
.
Non-precision (NP)
.
AI
.
AII
.
AIII
Typical display modes are shown below.
Note: Not all symbols are represented in this section. Refer to Section 10-42, Head-Up Display System, Symbology, for a complete listing of HUD system symbology.
Non-precision (NP) Mode Display
The non-precision mode can be used for all phases of flight from takeoff to landing including low visibility takeoff and landing rollout operations.
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