737 Flight Crew Operations Manual
Flight Instruments, Displays -
Head-Up Display System –
Controls
Boeing Proprietary. Copyright © Boeing. May be subject to export restrictions under EAR. See title page for details.
10.17.4 D6-27370-866-EGP
AFDS engaged modes, auto throttle modes, and autopilot status is indicated across
the top of the display similar to the flight mode annunciator display. Navigation
information is displayed dependent on the selected navigation source and active
AFDS mode. During LNAV operations, vertical and lateral deviations are
similarly displayed based on FMC data. During ILS/VOR operations, course
deviation is displayed within the HSI. Glideslope data is presented on a glideslope
deviation scale adjacent to the altitude tape.
If the HGS is in a mode other than primary, depressing a TO/GA switch activates
the primary mode independent of the mode selected on the MCDU.
Primary Mode - Low Visibility Takeoff
The primary mode includes special symbology used for a low visibility takeoff.
The display supports visual runway centerline tracking and enhances situational
awareness.
Primary Mode - Approach and Landing
When the primary mode is used for an approach and landing, flight director
guidance and navigation raw data is displayed. Once on the ground, the ground
localizer line and ground localizer scale is displayed (if an ILS frequency is tuned
on both nav receivers) to enhance centerline tracking.
3 Instrument Meteorological Conditions (IMC) Mode
The IMC mode is an alternate approach mode primarily intended for autopilot
approaches. Like the PRI mode, the IMC mode guidance cue utilizes AFDS
derived guidance. The guidance cue is displayed when the pilot’s flight director is
active and both pitch and roll commands are valid.
Altitude and airspeed data is displayed as digital values and navigation raw data
is displayed in close proximity to the flight path vector.
4 Visual Meteorological Conditions (VMC) Mode
The VMC mode is intended for visual approach operations. No flight director or
HUD guidance is displayed. The flight path vector is used to control the approach
to the runway.
Approach symbology format for the VMC mode is similar to the IMC mode.
However, navigation data is not displayed.
March 27, 2014
To Next Page
Loading...
