Flight Instruments, Displays -Head-Up Display System, Symbology
737 Flight Crew Operations Manual
SYMBOL NAME MODE REMARKS
TO FROM or TO/FROM annunciation All Indicates movement to or from a VOR station. Displayed when the selected VOR is valid and VOR mode is selected on the EFIS control panel.
Runway outline AII, AIII Displayed between 500 and 100 feet radio altitude. Width of runway is set to 150 feet. Length is based on value entered in the CDU. Tic marks are displayed at the touchdown aimpoint representing 1000 feet from the runway threshold.
RETARD Retard message All Indicates that a slow power reduction is to be initiated for the final phase of the flare maneuver.
NP or or AI AII or AIII HUD system mode All Indicates current HUD system mode. Only NP mode can be selected on the ground.
NP - - - - AIII Indicates current HUD system mode displayed over the armed HUD system mode.
GND ROLL NO GND ROLL or Additional FMA roll mode annunciations All Indicates HUD ground roll guidance availability.
Copyright . The Boeing Company. See title page for details.
June 1, 2003 10.42.9
Flight Instruments, Displays -Head-Up Display System, Symbology 737 Flight Crew Operations Manual
SYMBOL NAME MODE REMARKS
FLARE NO FLARE or Additional FMA pitch mode annunciations All Indicates HUD flare guidance availability. When either of these modes is active, the respective HUD annunciator illuminates.
1 CH Autopilot status annunciation All Indicates single channel.
EXCESS DEV Excess deviation message AII, AIII Displayed if approach criteria are exceeded. The EXCESS DEV light also illuminates on the HUD annunciator panel.
NO AIII AIII approach status warning AIII Displayed for 5 seconds if an AIII approach criteria is not satisfied. The NO AIII light also illuminates on the HUD annunciator panel.
SYS FAIL HUD system warning All Displayed for a critical fault in the HUD system. The SYS FAIL light also illuminates on the HUD annunciator panel.
Copyright . The Boeing Company. See title page for details.
10.42.10 June 1, 2003
Flight Instruments, Displays -Head-Up Display System, Symbology
737 Flight Crew Operations Manual
SYMBOL NAME MODE REMARKS
TAILSTRIKE Tail strike warning All Displayed for 5 seconds if the current approach AOA may result in a tailstrike on landing. Tailstrike monitoring is active at 300, 150 and 75 feet radio altitude. The TAIL STRIKE light also illuminates on the HUD annunciator panel.
NO FLARE Flare warning All Displayed when flare guidance is unavailable. The NO FLARE light also illuminates on the HUD annunciator panel.
ENG FAIL Engine failure warning All Displayed if an engine fails.
Copyright . The Boeing Company. See title page for details.
June 1, 2003 10.42.11
Flight Instruments, Displays -Head-Up Display System, Symbology 737 Flight Crew Operations Manual
TCAS Resolution Advisory
SYMBOL NAME MODE REMARKS
TACS Down preventive All Area(s) inside the lines indicate the pitch region(s) to avoid in order to resolve the traffic conflict. The flight path symbol should be positioned outside the pitch command area(s) to ensure traffic avoidance. A “T” inside the guidance cue indicates a corrective action is required, and represents TCAS maneuver guidance to maintain or increase separation from the traffic. The “TCAS” annunciation moves to a position under the bank angle symbol after 5 seconds of display.
TACS Up preventive
TACS TACS Up and down preventive
T TACS Descend corrective
T TACS Climb corrective
Copyright . The Boeing Company. See title page for details.
10.42.12 June 1, 2003
Flight Instruments, Displays -Head-Up Display System, Symbology
737 Flight Crew Operations Manual
Failure Flags
SYMBOL NAME MODE REMARKS
ATT IRS attitude flag All Attitude has failed. Also blanks: FPV, flight director, flare cue, altitude awareness bug, artificial runway, TO/GA pitch target line and glideslope reference line.
FPV Flight path vector (FPV) flag All Indicates FPV is invalid. The flight director and flare cues are blanked. The groundspeed readout may also be blanked based on the nature of the failure.
HDG Heading flag All Heading data has failed.
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