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400W Series 

190-01226-14 Rev. 3 

Instructions for Continued Airworthiness Bell 407 

Page 6 of 26 

2.2  Description of Alteration 

This STC upgrades existing avionics for the Bell 407 rotorcraft as summarized below. 

The Garmin Model 400W Series GPS/WAAS Nav/Com unit is a 6 ¼ inch wide unit mounted in the center 
console of the Bell 407. The 400W Series units combine a large number of easily accessible controls to 
use the color multi-function display, Nav and Com transceiver, GPS/WAAS navigator in a single unit. A 
GPS/WAAS antenna is installed on the top of the Bell 407 forward engine cowl. A monitored avionics 
cooling fan is installed in the instrument panel support with a fan fail fault annunciation located in the 
existing caution and warning annunciator panel. 

 

(1)

 

1

 

8

 

013

00103

00

 

GFC

 

3XX

 

3

PORT

 

COOLING

 

FAN

 

(1)

 

1

 

7

 

011

00351

00

 

CONNECTOR

 

KIT

 

GNS

 

430W

 

GNS

 

430AW

 

‐ 

1

 

011

00351

01

 

CONNECTOR

 

KIT

 

GNC

 

420W

 

GNC

 

420AW

 

‐ 

1

 

011

00351

03

 

CONNECTOR

 

KIT

 

GPS

 

400W

 

GPS

 

500W

 

‐ 

1

 

6

 

011

00676

00

 

BACKPLATE

 

SUB

ASSEMBLY

 

400W

 

SERIES

 

NAVIGATOR

 

(1)

 

‐ 

5

 

011

00671

00

 

BACKPLATE

 

SUB

ASSEMBLY

 

500W

 

SERIES

 

NAVIGATOR

 

(1)

 

‐ 

4

 

115

00345

00

 

MOUNTING

 

RACK

 

500W

 

SERIES

 

NAVIAGATOR

 

‐ 

1

 

3

 

115

00243

00

 

MOUNTING

 

RACK

 

400W

 

SERIES

 

NAVIAGATOR

 

‐ 

1

 

2

 

011

01061

XX

 

GNS

 

430AW

 

NAVIGATOR

 

011

01060

XX

 

GNS

 

430W

 

NAVIGATOR

 

011

01059

XX

 

GNC

 

420AW

 

NAVIGATOR

 

011

01058

XX

 

GNC

 

420W

 

NAVIGATOR

 

011

01057

XX

 

GPS

 

400W

 

NAVIGATOR

 

(1)

 

‐ 

1

 

011

01066

XX

 

GNS

 

530AW

 

NAVIGATOR

 

011

01064

XX

 

GNS

 

530W

 

NAVIGATOR

 

011

01062

XX

 

GPS

 

500W

 

NAVIGATOR

 

5XX

 

4XX

 

ITEM

 

NO.

 

PART

 

NUMBER

 

DESCRIPTION

 

QTY.

 

Summary of Contents for 400W Series

Page 1: ...g Number 190 01226 14 Rev 3 Garmin International Inc 1200 E 151st Street Olathe Kansas 66062 USA Record of Revision Rev Date Description of Change 1 04 09 15 Initial Release 2 06 18 15 Updated Airwort...

Page 2: ...ications contained herein are the property of Garmin International or its subsidiaries and may not be reproduced or used in whole or in part as the basis for manufacture or sale of products without wr...

Page 3: ...Operating Information 11 2 4 Servicing Information 11 2 5 Periodic Maintenance Instructions 12 2 6 Troubleshooting Information 14 2 7 Removal and Installation Information 23 2 8 Diagrams 24 2 9 Specia...

Page 4: ...rolled in accordance with the Garmin document control system When this document is revised refer to Section 2 15 for information on how to gain FAA acceptance or approval and how to notify customers o...

Page 5: ...lation of a 400W series GPS WAAS Nav Com unit under the Garmin Bell 400W 500W HTAWS STC SR02080SE Definition of Abbreviations See Section 1 5 Precautions None Units of measurement None Referenced publ...

Page 6: ...anel support with a fan fail fault annunciation located in the existing caution and warning annunciator panel 1 1 8 013 00103 00 GFC 3XX 3 PORT COOLING FAN 1 1 7 011 00351 00 CONNECTOR KIT GNS 430W GN...

Page 7: ...HTAWS annunciation Rotorcraft modified under this STC are restricted to VFR only including rotorcraft that may not have previously been restricted to VFR To clarify this operation limitation a placard...

Page 8: ...NG BASE CABLE TIE HIGH TEMPERATURE HEAVY BOND ADHESIVE TYTON 7 7 MS20426AD3 3 RIVET SOLID COUNTERSUNK 100 DEG PRECISION HEAD 3 32 IN OD 3 16 LONG 2 6 MS21071L06 NUT SLEF LOCKING PLATE ONE LUG REDUCED...

Page 9: ...connector 2 OVERHEAD CIRCUIT BREAKER PANEL Access or remove by extracting the mounting screws along the side of the circuit breaker panel 3 CYCLIC CONTROL GRIPS remove by extracting mounting screw at...

Page 10: ...400W Series 190 01226 14 Rev 3 Instructions for Continued Airworthiness Bell 407 Page 10 of 26 2 2 1 Weight and Balance Information...

Page 11: ...Refer to the 500W Rotorcraft STC Installation Manual listed in paragraph 2 1 of this document for additional information including overall size and center of gravity location of all LRUs 2 The longitu...

Page 12: ...excessive wear corrosion or damage Check mounting rack corners for cracks Check integrity of connector plate attachment to the back of mounting rack Check the tightness of fasteners attaching mounting...

Page 13: ...ole assembly and verify that the resistance is less than or equal to 20 milliohms In the event of bonding test failure 1 Inspect the grounding strap which is installed between the annunciator panel an...

Page 14: ...series unit consult the Troubleshooting section contained below Table 2 Troubleshooting Guide Problem Possible Cause Solution The 400W Series unit does not power on The unit is not getting power to t...

Page 15: ...olver has not been calibrated Check wiring and calibration 400W Series unit is not receiving heading from compass system ARINC 429 heading input used ARINC 429 input port speed not correct Check ARINC...

Page 16: ...s connected to Improper setup on the remote device Verify the configuration of the other device Device not compatible or improper connection Verify 400W Series unit RX is connected to remote device TX...

Page 17: ...able The ADS B traffic system is reporting that the CSA application has failed Traffic alerting on ADS B traffic is unavailable Ensure the aircraft has a clear view of the sky If problem persists cont...

Page 18: ...key stuck 420W and 430W only The external push to talk PTT switch is stuck in the enabled or pressed state Try pressing the PTT switch again to cycle its operation Wiring is incorrect Check Wiring COM...

Page 19: ...only The unit has detected a failure in its glideslope receiver The glideslope receiver may still be usable Contact Garmin technical support GDL 69 is not responding No data is being received from th...

Page 20: ...Check GPS antenna installation connections and cable routing The GPS antenna must be mounted on the top of the aircraft Antenna shaded from satellites Make sure the aircraft is clear of hangars buildi...

Page 21: ...utonomous Integrity Monitoring RAIM has determined the information from one or more GPS satellites may be in error Wait for GPS satellite geometry to improve Searching the sky The 400W Series unit is...

Page 22: ...ot solve the problem replace the card VLOC has failed 420W and 430W only The GNC 420 GNS 430W has detected a failure in its VLOC receiver Contact Garmin technical support VLOC is not responding 420W a...

Page 23: ...bezel until the unit is firmly seated in the rack NOTE The installation configuration and user settings are stored internally in the 400W Series unit and will be lost when the 400W Series is replaced...

Page 24: ...nect air duct from cooling fan port 3 Remove 407 030 202 148 COVER LOWER RH 4 Disconnect cooling fan electrical connector located next to fan cooling ports 5 Remove two 2X cooling fan screws and remov...

Page 25: ...lete all the inspections specified in Table 1 Periodic Maintenance Inspections 2 10 Application of Protective Treatments None N A 2 11 Data Relative to Structural Fasteners Location see Installation D...

Page 26: ......

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