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┃I -~ A318 ┃I FLIGHTFMANAGEMENT ┃SEQ 001 1 ┃I REV 30 ┃
┃ .,,,.8, ,, ~L,~ A319 ┃ ┃ ┃ ┃
┃ Lli,~ A320 ┃ ┃ ┃ ┃
┃ A~7-~'M" A321 ┃ ┃ ┃ ┃
┃ FLIGHT CREW OPERATING MANUAL ┃ ┃ ┃ ┃
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Each FMGC may tune only one VOR (manual or automatic).
Autotuning follows the following VOR tuning priorities :
1. The navaid specified for the approach.
2. The navaid to be used for computing the present radio ~osition.
3. For display purposes :
- A navaid specified for the active leg ;
- The "to" waypoint (TO WPT), if it is a navaid ;
- The "from" waypoint (FROM WPT), if it is a navaid
- A waypoint farther along the flight path, if it is a navaid ;
- The navaid closest to the aircraft's present position.
The scratchpad displays "SPECIFIC VOR-D UNAVAIE', if the VOR or VOR/DME required for
tuning has been deselected.
Each FMGC automatically uses its five DMEs as follows :
- One DME for display. It may be manually or automatically tuned.
- Two DMEs in DME/DME mode for calculating the aircraft's radio position. The FMGC
autotunes these as a function of their best accuracy. The flight crew receives no
indication that this process is going on.
- One DME autotuned for radio position. This occurs in the VOR/DME mode, whenever
DME/DME is unavailable and the conditions for a VOR/DME update are met. In this case,
the VOR/DME, used for display, is identical to the VOR/DME navaid used for the
computation of a radio position.
- One DME is linked to the ILS/DME.
ADF
The FMGC autotunes one ADF, when the flight plan specifies an NDB approach and a fix
in the approach is the "TO" waypoint.
The scratchpad displays "SPECIFIC NDB UNAVAIL", if the NDB required for autotuning has
been deselected.
ILS
Each FMGC autotunes one ILS frequency :
- In the PREFLIGHT or TAKEOFF phase, when the takeoff runway has an associated ILS.
- In the CLIMB-CRUISE-DESCENT, APPROACH, or GO-AROUND phase, when the type of
approach in the flight plan is ILS.
The scratchpad displays "RW~/ILS MISMATCH" when the pilot has manually tuned the ILS
and the entered frequency does not match the ILS or LOC IDENT/FREQ requested for
autotuning. The FMGS logic does not allow the crew to modify the course of an ILS when
its frequency is identical to the ILS selected in the F-PLN.
CCM ALL
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┃I ~-2 .4318 ┃ AUTO FLIGHT ┃1.22.20 P 13 ┃
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本文链接地址：
AIRBUS A320 Flight Crew Operating Manual1(179)
