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X-SIDE
P604_11_003
Weather Radar Display
Select Switch
Used to select or
deselect Weather Radar
Display
MFD Format
Selector Switch
Used to select basic
format/mode
displayed on MFD
Range Selector
Switch
Used to select range
displayed on MFD
TFC Switch
Used to directly select
TCAS traffic display on
MFD
Cross-Side Course
Selection Push-
Button Switch
Used only on MFD;
in HSI and NAV
Sector formats
Terrain Information
Display Select Switch
Used to select or
deselect Terrain
Information Display
No. 1 Bearing Pointer
Source Switch
Push to select No. 1
source
No. 2 Bearing Pointer
Source Switch
Push to select No. 2
source
Navigation Source
Knob
Rotate to select
navigation source
FLIGHT INSTRUMENTS
11-18 For Training Purposes Only
May 03
P I LOT T R A I N I N G GU I D E
Air Data Reference Panel
The Air Data Reference Panel (ADRP) is used to set speed, altitude and barometric
pressure values, which are then sent to the EFIS for display. The two ADRPs are
installed on the center pedestal. Each panel has three rotary knobs with inset
pushbutton switches. The panel is divided into three sections: the speed reference
section, the altitude reference section and the barometric pressure section.
• the Speed Reference section is used to make changes to airspeed references (V1,
VR, V2 and VT)
• the Altitude Reference section is used to control the Minimum Descent Altitude
(MDA) and Decision Height (DH) display on the EFIS. It also incorporates a test
switch for the Radio Altimeter (RA)
• the Barometric Pressure section is used to make changes to the ADC barometric
correction function
Speed Reference Section
To manually change the speeds posted on the V-Speed table, turn the TGT/VSPDS
outer knob to either TGT (VT), or VSPDS (V1, VR and V2). Rotate the SET (inner)
knob to change the speed values. In the VSPDS position the reference speeds can be
alternately edited by pushing the SEL button and rotating the SET knob. The SET
switch (inner knob) enables/disables the PFD display of the selected target or
reference airspeed. These speeds are displayed below the IAS scale on the PFD and
are located on the speed tape in their respective positions (V1, VR, V2 and VT).
Manually entered V-speeds will be displayed in cyan. For Precision-Plus-equipped
aircraft, V-speeds can be computed and entered via the FMS where they will be
displayed in cyan. Manually entered V-speeds in Precision-Plus-equipped aircraft are
displayed in magenta.
Altitude Reference Section
To change the altitude value displayed for either the Minimum Descent Altitude
(MDA) or the Decision Height (DH), rotate the DH/MDA (outer) knob to select the
altitude to be amended. The SET (inner knob) switch is rotated to change the values.
These altitudes are displayed on the PFD below the altitude scale. The SET switch is
pushed to enable or disable the display of either the DH or the MDA.
The Radio Altimeter (RA) test switch is depressed to conduct an internal test on the
Radio Altimeter. The RA value on the bottom of the Attitude Direction Indicator will
change to 50 feet and the rising runway symbology, located on the Radio Altimeter
analog scale, moves down 50 feet.
FLIGHT INSTRUMENTS
For Training Purposes Only
May 03
11-19
P I LOT T R A I N I N G GU I D E
Barometric Pressure Section
The Barometric (BARO) knob changes the barometric pressure. Pushing the SET
switch selects standard barometric pressure (29.92 inches of mercury, or 1013
hectopascals). The value is displayed below the PFD altitude scale. The HPA/IN
switch alternately selects barometric pressure correction in hectopascals (hPa), or
inches of mercury (inHg).
Air Data Reference Panel
Figure 11-10
P604_11_044
PUSHSET
OFF
SEL
SPEED REFS
TGT VSPDS
BARO
DH MDA HPA/IN
RA TEST
PUSH
SET
OFF
PUSH
STD
SEL Button
Toggles between V ,
V orV
1
R 2
SPEED REFS Knob
Outer knob
Inner set knob
PUSH OFF
- Selects target
speed or V speeds V , V , V .
- Adjusts value of
selected V-speed.
- Removes display of
selected speed.
VT 1 R 2
RA TEST
Initiates radio
altimeter test
BARO Knob
Knob - rotate to set
barometric pressure.
HPA/IN
Toggles between hPa/mb
or inches of mercury
DH/MDA Knob
Outer knob
Inner set knob
　
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