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The LRN STATUS text page on the MFD shows:
- Each installed GPS
- Current latitude and longitude position of each sensor
- Current tracking direction and speed of each sensor
- Current operating mode of each sensor
- Number of satellites in use by each sensor
- RAIM accuracy limit of each sensor
- Measured accuracy limit of each sensor
- Probable error of each sensor
REQUIRED NAVIGATION PERFORMANCE (RNP)
RNP is a statement of the navigation performance accuracy necessary for operation within a defined airspace. The RNP
value may be specified by the pilot by entering the value on the FMS PROGRESS page. The FMS computes its expected
position accuracy based on the sensors in use. The expected position accuracy (POS ACCURACY) is also displayed on the
PROGRESS page. When flying in RNP airspace the FMS position error should be less than the RNP value 95% of the time.
If the expected position accuracy error is more than the RNP value, a message LOW POS ACCURACY is displayed on
the CDU and navigation by other means must be utilized.
SATELLITE DESELECT
Individual satellites can be deselected from use by entering the identifier for the satellite in the FMS. This function would
be used if a satellite is NOTAM’d under test. When deselected, the FMS ignores the data from the satellite.
NAVIGATION
Volume 2 Flight Crew Operating Manual Sep 13/2004
17-01-36 CSP 100-6 REV 1
CONTROLS AND INDICATIONS
NAVIGATION COMPONENTS
CFO1701002_001
1/2 DME/H NAVSRC
RADIO BRGSRC
FRMT TFC TR/WX
REFS RADAR
TUNE MENU DATA TILT RANGE
MSG
DIR FPLN LEGS
DEP
ARR PERF
MFD
MENU
MFD
ADV
MFD
DATA
PREV NEXT
EXEC
IDX
TUN
CLR
DEL
BRT
DIM
A B C D E F G
H I J K L M N
O P Q R S T U
V W X Y Z SP /
1 2 3
4 5 6
7 8 9
. 0/ +/-
COM1 COM2 COM3 HF1 HF2 CAB PA
HDPH
1 DME 2 1 ADF 2 MKR INPH SPKR
1 NAV 2
VOICE EMER 02 MASK
BOTH NORM NORM
AUDIO CONTROL PANEL MFD CONTROL PANEL
CONTROL DISPLAY UNIT
DISPLAY CONTROL PANEL
CAS
CKLST SKIP
FRMT TFC TR/WX ENTER SUMRY
A/ICE ECS ELEC FLT FUEL HYD
L R
AUTO PLAN
SHLDR SIDE
NAVIGATION
Sep 13/2004 Flight Crew Operating Manual Volume 2
REV 1 CSP 100-6 17-01-37
EICAS MESSAGES
The navigation system messages are shown on the EICAS. In the navigation system messages are listed. A brief explanation
for each message is provided.
MESSAGE INHIBITS MEANING
AURAL
WARNING
TAWS BASIC FAIL TO/LAND
Some of the basic modes (Mode 1 thru 6) of the
terrain awareness warning system have failed
TAWS SYSTEM FAIL TO/LAND
The terrain awareness warning system has
failed
TAWS TERR FAIL TO/LAND
The terrain function of the terrain awareness
system has failed
TAWS TERR NOT
AVAIL TO/LAND
The TAWS terrain data base has no data for the
current location
TAWS WINDSHEAR
FAIL TO/LAND
The windshear function of the terrain awareness
warning system has failed
TAWS FLAPS OFF
The flap warning function of the terrain awareness
warning system has been selected OFF by
the crew
TAWS GS WARN OFF
The glideslope warning function of the terrain
awareness warning system has been selected
OFF
TAWS TERR OFF The terrain warning function of the terrain awareness
warning system has been selected OFF
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