.
if the maximum operating speed has failed, the red and black maximum
operating speed bar is removed.
No V Speeds Flag (amber)
V1 (decision speed) or VR (rotation speed) has not been entered or is invalid.
Speed Flag (amber)
The speed indication is inoperative. All indication markings are removed.
Pitch/Roll Comparator Annunciation (amber)
PITCH displayed when Captain’s and F/O’s pitch angle displays differ by more than 5 degrees.
ROLL displayed when Captain’s and F/O’s roll angle displays differ by more than 5 degrees.
The flags flash for 10 seconds then remain steady.
Localizer Flag (amber)
An ILS frequency is tuned and the ILS localizer deviation display on the attitude indication has failed.
Heading Flag (amber)
Heading information failed.
Flight Path Vector Flag (amber)
FPV is selected on the EFIS control panel, but has failed. De–selection of FPV removes the flag.
Radio Altitude Flag (amber)
The radio altitude display has failed.
Flight Director Flag (amber)
The flight director has failed.
Copyright . The Boeing Company. See title page for details.
Flight Instruments, Displays -PFD/ND – Displays 737 Flight Crew Operations Manual
Glide Slope Flag (amber)
An ILS frequency is tuned and the ILS glide slope deviation display on the attitude indication has failed.
Altitude Flag (amber)
The attitude display has failed.
Vertical Speed Flag (amber)
Vertical speed has failed.
Attitude Flag (amber)
The attitude display has failed.
Landing Altitude Flag (amber)
The landing altitude input is not available or invalid.
Additional Annunciations and Alerts
Displays Control Panel Annunciation
Displays Control Panel Annunciation (amber)
With the CONTROL PANEL select switch on the overhead panel in:
.
BOTH ON 1 - left (Capt) EFIS control panel has failed
.
NORMAL - corresponding EFIS control panel has failed
.
BOTH ON 2 - right (F/O) EFIS control panel has failed. Altitude information is removed.
Copyright . The Boeing Company. See title page for details.
10.11.42 March 28, 2005
Flight Instruments, Displays -PFD/ND – Displays 737 Flight Crew Operations Manual
Display System Annunciations
Note: The following annunciations occupy the same display location in the lower left corner of the primary flight display.
Display System Annunciations
DSPLY SOURCE (amber) – A single DEU has been selected, either manually or automatically, to drive all six display units.
. If the DEU fails on the same side as the engaged autopilot during climb or
descent –
YA613 - YA809, YC411 - YK104
. the flight directors are removed from both pilots’ displays. The flight
directors reappear at ALT ACQ
YC153, YC154
.
the flight director pitch command bars are removed from both pilots’ displays. The pitch command bars reappear at ALT ACQ
.
the pitch mode reverts to CWS pitch
.
the autopilot remains engaged.
.
If the DEU fails on the same side as the engaged autopilot during level
flight –
.
climb or descent to a new MCP altitude is not possible in LVL CHG, VNAV, or V/S modes with the autopilot engaged.
.
If the DEU fails on the opposite side as the engaged autopilot or while in
manual F/D mode during climb or descent –
YA613 - YA809, YC411 - YK104
. the flight director is removed from the pilot’s display on the failed side until ALT ACQ
Copyright . The Boeing Company. See title page for details.
Flight Instruments, Displays -PFD/ND – Displays 737 Flight Crew Operations Manual
YC153, YC154
.
the flight director pitch command bar is removed from the pilot’s display on the failed side until ALT ACQ
.
climb or descent is possible in LVL CHG, VNAV or V/S modes with the autopilot engaged.
.
If the DEU fails on the same side as the engaged autopilot in the
APPROACH mode –
YA613 - YA809, YC411 - YK104
. the flight directors are removed from the pilot’s display on the failed
side.
YC153, YC154
. the flight director pitch and roll command bars are removed from the pilot’s display on the failed side.
YA613 - YA687, YA801 - YK104 CDS MAINT (white) – A dispatchable CDS fault has occurred. Displayed on the ground only, prior to start of the second engine.
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