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TB20 MAINTENANCE MANUAL 34 导航 TB20飞机维护手册 1(89)

时间:2011-11-09 15:56来源:蓝天飞行翻译 作者:航空
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F. M81 course deviation indicator (Figure 4)
The indicator displays VOR, ILS and GPS information provided by the A78 COMM./VOR-ILS/GPS transceiver.
The front panel of the indicator includes :
- the "OBS" button used to adjust the desired radial under the lubber line by moving the compass card,
- the horizontal pointer showing the Glide Slope course position relative to aircraft position,
- the vertical pointer showing the VOR or GPS course deviation or LOC course position relative to aircraft position,
- the "TO/FR" flag showing "TO" if the aircraft flies towards the selected ground station or towards the selected waypoint or "FR" when the aircraft flies in the opposite direction from the ground station or from the selected waypoint.
- the VOR/LOC/GPS warning flag which appears to show that the received signals cannot be used.
- the Glide Slope warning flag which appears to show that the received signals cannot be used.
- two indicator lights to identify the origin of the information displayed by the indicator. It is electrically supplied by "BUS 1" bar and protected by CB 87 "NAV 1/GPS 1" circuit breaker. The indicator is mounted on the L.H. instrument panel.
 
1 - Display
2 - "CDI" pushbutton
3 - VOR/ILS window
4 - Concentric knob
5 - "V <->" pushbutton
6 - ".V" button
7 - ".C" button
 
14231200AAARVZ4200
ANAN
Validity : GNS 430 NAV 1 installation — A78 COMM.NOR-ILS/GPS transceiver
Figure 3
34-51 00 (DI) Page 6 NOV 01
 
1 - Lubber line
2 - "TO/FR" flag
3 - Compass card
4 - Glide slope warning flag
5 - Horizontal pointer
6 - VOR-LOC/GPS warning flag
7 - "OBS" button
8 - Vertical pointer
9 - Indicator lights
 

 
NAV 1 installation — M81 course deviation indicator
Figure 4
 
4. OPERATION (Figure 5)
The "RADIO MASTER" switch controls the energization of the whole radionavigation system.
The "CDI" pushbutton on the front panel of the COMM./VOR-ILS/GPS transceiver enables the selected information of VOR/ILS or GPS navigation source to be directed towards the course deviation indicator or towards the HSI. A "VLOC" or "GPS" message appears on the display above the "CDI" pushbutton to confirm the selection.
Aircraft with M81 course deviation indicator
The same message appears on the front face of the indicator. Aircraft with M73 horizontal situation indicator (HSI)
"NAV1/GPS1" pushbutton of M6 advisory panel enables the selected information of VOR/ILS or GPS navigation source to be directed towards the horizontal situation indicator. The pushbutton indicator light relative to selection illuminates.
 
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