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GARMIN Ltd. or its subsidiaries 

c/o Garmin International 

1200 E. 151

st

 Street, Olathe, KS 66062 USA 

 

AIRPLANE FLIGHT MANUAL SUPPLEMENT 

or SUPPLEMENTAL AIRPLANE FLIGHT MANUAL 

for a Garmin 400W Series Navigation System 

 

 

 

190-00356-03 Rev. B 
Page 4 of 16 

 

 

Section 1.

 

 GENERAL 

1.1

 

Garmin 400W Series GPS/WAAS Nav Com 

The Garmin 400W Series GPS/WAAS Navigator is a panel-mounted 
product that contains a GPS/WAAS receiver for GPS approved primary 
navigation, under TSO C146a (plus optional VHF Com and VHF Nav 
radios) in an integrated unit with a moving map and color display. The 400W 
Series unit features a graphical display which may also be used to depict 
traffic, weather, or terrain data. 
 
The navigation functions are operated by dedicated keys and graphical 
menus which are controlled by the buttons and the dual concentric rotary 
knob along the bottom and right side of the display. 
 
Optional VHF Com and VHF Nav radio functions are controlled via 
dedicated buttons and knobs on the left side of the display and adjacent to 
frequencies they are controlling. 
 

OBS 
Key

Power and Com 

Volume/Squelch

Photocell
for Auto-
Dimming

Graphic Moving

Map Display and

Navigation Info

Procedure Key

Range Keys

Enter Key

Direct-To Key

Menu Key

Function and
Page Number

Clear Key

Comm Freq 

Flip/Flop

Nav Radio 

Flip/Flop

Nav Radio 

Volume

Small Knob
Com/VLOC
Freq (kHz)

Com Freq

Window

Small Knob
(Cursor - Press
to activate)

Large Knob

Data 

Cards

Flight Plan
Key

Mounting 

Screw

Message
Key

CDI
Key

Navigation
Source: GPS, 
VLOC, or
GPS-PTK

Nav Freq

Window

Large Knob
Com/VLOC 
Freq (MHz)

Terrain, Flight
Phase, and 
GPS Integrity 
Annunciator

 

 
Figure 1 - 400W Series Control and Display Layout

 

Summary of Contents for 400W Series

Page 1: ......

Page 2: ......

Page 3: ...avigation Database 7 2 4 Terrain Database 7 2 5 Navigation 8 2 6 Approaches 8 2 7 Autopilot Coupling 9 2 8 Terrain Display 9 2 9 VNAV 9 2 10 Weather Display 9 2 11 Traffic Display 10 Section 3 EMERGEN...

Page 4: ...ted keys and graphical menus which are controlled by the buttons and the dual concentric rotary knob along the bottom and right side of the display Optional VHF Com and VHF Nav radio functions are con...

Page 5: ...anic and remote airspace when used in conjunction with WAAS Garmin Prediction Program part number 006 A0154 03 Oceanic operations are supported when the 400W Series unit annunciates OCN This provides...

Page 6: ...B This AFM supplement does not grant approval for IFR operations to aircraft limited to VFR operations Additional aircraft systems may be required for IFR operational approval Systems limited to VFR...

Page 7: ...ent approaches must be accomplished in accordance with an approved instrument approach procedure that is loaded from the 400W Series unit database c Installations with dual 400W 500W Series units will...

Page 8: ...plishment of an ILS LOC LOC BC LDA SDF MLS VOR approach or any other type of approach not approved for GPS overlay is not authorized with GPS navigation guidance d Use of the GNS 430W VOR LOC GS recei...

Page 9: ...units The GS of an ILS VLOC may be coupled to the autopilot without any limitations This limitation may be removed after an FAA Flight Test demonstration Contact Garmin International Tech Support for...

Page 10: ...e only and may not be used in lieu of an official weather data source 2 11 Traffic Display Traffic may be displayed on the 400W Series unit when connected to an approved optional TCAS TAS or TIS traff...

Page 11: ...modes do not support DR b If a Loss of Integrity INTEG message is displayed during y Enroute Terminal continue to navigate using GPS equipment and periodically cross check the GPS guidance to other ap...

Page 12: ...ans of navigation should be utilized e During any GPS approach in which precision and non precision alarm limits are exceeded the 400W Series unit will flag the lateral guidance and generate a system...

Page 13: ...h limited familiarity in using the unit in an IFR environment particularly without the autopilot engaged Garmin provides excellent training tools with the Pilot s Guide and PC based simulator Pilots s...

Page 14: ...log deviation information If an HSI is used with GPSS engaged the pilot should rotate the course pointer as prompted on the 400W Series unit to prevent loss of situational awareness and to prevent the...

Page 15: ...pts the pilot and requires the pilot to enable the A P outputs just prior to engaging the autopilot in APR mode This installation supports a seamless transition from digital GPSS to analog guidance fo...

Page 16: ...tection and Exclusion WFDE Prediction Program is required for Remote Oceanic operations The Prediction Program should be used in conjunction with the Garmin 400W 500W Simulator After entering the inte...

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