.
localizer receiver has failed
.
scale indicates deviation.
Airplane Symbol
Localizer Flag
.
localizer receiver has failed
.
localizer pointer is removed.
Copyright . The Boeing Company. See title page for details.
Flight Instruments, Displays -EFIS Instruments (PFD) – Controls 737 Flight Crew Operations Manual
Caging Control PULL – aligns horizon line with the airplane symbol RELEASE – the control contracts.
Standby Altimeter/Airspeed Indicator YA613 - YC413, YK101 - YK104
Standby Altimeter
Receives static pressure from the alternate static ports.
Digital Counter
.
indicates thousand foot increments of current altitude
.
a green flag appears in the left side of the window when altitude is less
than 10,000 feet
.
a striped flag appears in the left side of the window when altitude is less
than zero feet.
Standby Airspeed Indicator
Receives ram air pressure from the auxiliary pitot probe and static pressure from the alternate static ports.
Barometric Setting Control
ROTATE – adjusts the barometric correction in both barometric windows.
Copyright . The Boeing Company. See title page for details.
10.16.14 June 1, 2005
Flight Instruments, Displays -EFIS Instruments (PFD) – Controls
737 Flight Crew Operations Manual
Altitude Pointer
Indicates hundred foot increments of current altitude.
Barometric Setting Windows
Indicates barometric correction in millibars and inches of mercury as set by the barometric setting control.
Integrated Standby Flight Display YD651 - YD655
Approach (APP) Switch
Push –
.
when blank, selects APP
.
when APP displayed, selects BCRS
.
when BCRS displayed, blanks
Approach Mode Annunciation
Indicates approach mode selected.
.
Blank – no approach deviation data displayed
.
APP – ILS localizer and glideslope deviation data displayed
.
BCRS (Back course) – reverses sensing for localizer pointer during back course approaches
Copyright . The Boeing Company. See title page for details.
Flight Instruments, Displays -EFIS Instruments (PFD) – Controls 737 Flight Crew Operations Manual
Attitude Display
Displays airplane attitude.
.
Indicates bank in reference to the bank scale
.
Indicates the horizon relative to the airplane symbol
.
Beyond 30 degrees pitch, large red arrowheads (V-shaped) indicate the
attitude has become excessive, and the direction to the horizon line.
Display Brightness Switches
Push – . + increases display brightness . - decreases display brightness
Airplane Symbol
Indicates airplane attitude with reference to the horizon.
Airspeed Indications
Indicates current airspeed when above 30 knots.
Attitude Reset (RST) Switch
Push and hold at least two seconds
.
aligns horizon with the airplane symbol
.
reset takes approximately ten seconds
.
starts new initialization sequence if previous attempt failed (ground only)
Hectopascal/Inch (HP/IN) Switch
Push – changes the units of the barometric reference.
Barometric Setting
Indicates the barometric setting selected with the barometric selector. STD is displayed when selected with the barometric selector.
Ambient Light Sensor
Automatically adjusts display intensity for ambient lighting condition.
Copyright . The Boeing Company. See title page for details.
10.16.16 March 28, 2005
Flight Instruments, Displays -EFIS Instruments (PFD) – Controls
737 Flight Crew Operations Manual
Glideslope Pointer and Deviation Scale
The glideslope pointer indicates glideslope position relative to the airplane.
.
the pointer is in view when the glideslope signal is received
.
the scale is in view when the APP mode is selected
.
the pointer and scale are removed when the BCRS mode is selected
Current Altitude
Localizer Pointer and Deviation Scale
The localizer pointer indicates localizer position relative to the airplane.
.
the pointer is in view when the localizer signal is received
.
the scale is in view when either the APP or BCRS mode is selected
Barometric (BARO) Selector Rotate – changes barometric setting Push –
.
selects standard barometric setting (29.92 inches Hg/1013 HPA)
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