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P/N 11934-S38

9 of 10

Cirrus Design

Section 9

SR20

Supplements

3.

Dual GNS 430W units are installed. GPS 1 in this configuration is
the uppermost GNS 430W unit in the console and GPS 2 is the
lower GNS 430W unit.

• GPS 1 in this configuration is a GNS 430W Navigator with VHF

COM interfaced with the PFD and MFD as GPS 1/VLOC 1.
Select NAV Source to GPS 1 or VLOC 1 through the PFD’s
NAV select button. With source set to GPS 1 or VLOC 1, it can
be alternately set between GPS or VLOC by the CDI button on
the navigator. The active source is identified on the PFD. 

• GPS 2 in this configuration is a GNS 430W Navigator with VHF

COM interfaced with the PFD and MFD as GPS 2/VLOC 2.
Select NAV Source to GPS 2 or VLOC 2 through the PFD’s
NAV select button. With source set to GPS 2 or VLOC 2, it can
be alternately set between GPS or VLOC by the CDI button on
the navigator. The active source is identified on the PFD.

Revision 02: 10-29-13

Summary of Contents for 400W-Series

Page 1: ...ement is applicable and must be inserted in the Supplements Section Section 9 of the Cirrus Design SR20 Pilot s Operating Handbook This document must be carried in the airplane at all times Information in this supplement either adds to supersedes or deletes information in the basic SR20 Pilot s Operating Handbook Note This POH Supplement Change dated Revision 02 10 29 13 supersedes and replaces Re...

Page 2: ...y satellites WAAS also provides the capability of quickly determining when signals from a given satellite are wrong and removing that satellite from the navigation solution using Receiver Autonomous Integrity Monitoring RAIM a technology developed to assess the integrity of GPS signals Note WAAS satellite coverage is only available in North America User in other parts of the world can receive WAAS...

Page 3: ...P N 11934 S38 3 of 10 Cirrus Design Section 9 SR20 Supplements SR20_FM09_1285 SR20_FM09_1109 Figure 1 GNC 420W and GNS 430W 400W Series Navigators Revision 02 10 29 13 ...

Page 4: ...d it is receiving usable navigation information from the GPS receiver 4 Do not use the TERRAIN Interface for navigation of the aircraft The Terrain Display does not provide TAWS capability and is intended to serve as a situational awareness tool only and does not provide the accuracy fidelity on which to solely base terrain or obstacle avoidance maneuvering decisions Section 3 Emergency Procedures...

Page 5: ...the self test is in progress When the self test is successfully completed the Navigator asks for NavData database confirmation acquires position and then displays the acquired position on the Navigators display and on the MFD Note The Navigator is not coupled to an air and fuel data computer Manual fuel on board and fuel flow entries must be made in order to use the fuel planning function of the A...

Page 6: ...d in the GNC 420W control unit mounted in the center console Additionally a VHF communications receiver designated COM 2 is also integrated into the unit GPS Navigator The GNC 420W navigator is coupled to the airplane s CDI The GPS 2 antenna is located on top of the fuselage slightly aft of the rear window along the airplane centerline The navigator is powered by 28 VDC through the 5 amp GPS2 and ...

Page 7: ...nctions GPS Navigator The GNS 430W Navigator is coupled to the airplanes HSI and MFD Typically the second GPS Navigator provides backup and is approved for VFR use only If the second GPS is also a GNS 430W it will be coupled to the CDI and is also approved for IFR use The GPS 1 antenna is located on top of the fuselage slightly aft of the rear window along the airplane centerline and the GPS 2 ant...

Page 8: ...source set to GPS 1 or VLOC 1 it can be alternately set between GPS or VLOC by the CDI button on the navigator The active source is identified on the PFD GPS 2 in this configuration is a GNC 250XL Navigator interfaced with the PFD and MFD as GPS 2 Select NAV Source to GPS 2 through the PFD s NAV select button The active source is identified on the PFD 2 Single GNS 430W GPS 1 interfaced with the PF...

Page 9: ... through the PFD s NAV select button With source set to GPS 1 or VLOC 1 it can be alternately set between GPS or VLOC by the CDI button on the navigator The active source is identified on the PFD GPS 2 in this configuration is a GNS 430W Navigator with VHF COM interfaced with the PFD and MFD as GPS 2 VLOC 2 Select NAV Source to GPS 2 or VLOC 2 through the PFD s NAV select button With source set to...

Page 10: ...The TERRAIN function displays altitudes of terrain and obstructions relative to the aircraft s altitude and are advisory in nature only Individual obstructions may be shown if available in the database however not all obstructions may be available in the database and data may be inaccurate TERRAIN information should be used as an aid to visual acquisition and not use to navigate or maneuver to avo...

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