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DME-DME
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PRIMARY DISPLAY SYSTEM -CENTERED MAP MODE
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GPS
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LOC
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INERTIAL.
TCAS traffic messages and TCAS traffic symbols show in the centered map mode.
TCAS status and mode information shows below the WXR data field to indicate TCAS selection (TFC) and mode data; TA ONLY (TCAS is not computing RA), TCAS TEST (TCAS is in the test mode), TCAS OFF, or TCAS FAIL (a fault exist in TCAS).
Vertical deviation from the FMCF flight plan descent path shows on the VNAV path scale. The information shows when the descent phase becomes active. Deviation greater than 420 feet above the path causes a numerical readout to show above the vertical scale. Deviation greater than 420 feet below the path causes a numerical readout to show below the vertical scale.
Weather radar shows in this mode when the crew turns weather radar on.
Map background data contains many types of symbols and data. This data includes:
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Active, inactive and modified flight plans
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Flight plan waypoints
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Holding patterns
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Airports
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Runways
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Navigation aids
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Airway segments
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Radio navigation aid raw data.
The ND data select switches on the EFIS control panels control much of the data.
The alternate navigation source shows if the FMCF fails in the lower left corner next to the navigation aid information. For CDU map changes, the CDU can only do straight or direct to calculations.
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PRIMARY DISPLAY SYSTEM -EXPANDED MAP MODE
General
The expanded map mode shows the same basic data as the centered map mode. The airplane symbol is identical. The top of the symbol shows the present position of the airplane.
The single range numeric shows one half of the full scale map range from the range control on the EFIS control panel or the CDU.
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PRIMARY DISPLAY SYSTEM -MAP MODE FAILURE FLAGS
General
Failures of input sources cause data to go away from the display and failure flags to show.
All the flags are amber in color.
The captain’s and first officer’s NDs operate independently.
Failure Flags
The TRK flag shows when the ADIRU track input fails.
The MAP flag shows when the FMCF latitude or longitude is invalid or when the MAP dynamic or background data is invalid.
The VTK (vertical track) flag shows if the map dynamic or background data is invalid or the FMC altitude error rate is invalid.
The VORL or VORR flag shows when the left or right VOR input fails. To see the flag, put the applicable switch on the EFIS control panel in the VOR position.
The ADFL or ADFR flag shows when the left or right ADF fails. To see the flag, put the applicable switch on the EFIS control panel in the ADF position.
The DMEL or DMER flag shows when the DME co-located with the ILS, or left or right VOR fails. To see the flag for DMEs co-located with the VOR stations, put the applicable VOR switch on the EFIS CP must in the VOR position.
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PRIMARY DISPLAY SYSTEM -MAP MODE FAILURE FLAGS
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PRIMARY DISPLAY SYSTEM -MAP MODES NCD AND FAIL CONDITIONS
General
The display function in the AIMS cabinets evaluates inputs from the airplane systems.
A no computed data (NCD) status causes information on the display to go away.
A fail status causes information on the display to go away and a fail flag to show.
MAP Modes NCD and Failure Conditions
The chart shows the NCD and fail conditions for the MAP modes.
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PRIMARY DISPLAY SYSTEM -MAP MODES NCD AND FAIL CONDITIONS 中国航空网 www.aero.cn 航空翻译 www.aviation.cn 本文链接地址：777 AMM 飞机维护手册 指示和记录系统 2(30)
