Garmin | GNS 530W | Garmin GNS 530W 500W Series Instructions for Continued Airworthiness Bell 206L Series

Garmin GNS 530W 500W Series Instructions for Continued Airworthiness Bell 206L Series
500W Series
Instructions for Continued Airworthiness
Bell 206L Series
Reg. No.____________
S/N_______________
Dwg. Number:
190-01226-11 Rev. 3
Garmin International, Inc.
1200 E. 151st Street
Olathe, Kansas 66062 USA
Record of Revision
Rev.
Date
1
2
3
04/09/15
06/18/15
02/08/17
Description of Change
Initial Release
Updated Airworthiness Limitations section
Updated troubleshooting table section to add GDL 88H and GTX 3X5
Company Proprietary Information
This drawing and the specifications 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 written permission.
Copyright  2017 Garmin Ltd. or its subsidiaries. All rights reserved.
Garmin International, Inc.
1200 E. 151st Street
Olathe, Kansas 66062 U.S.A.
500W Series
Instructions for Continued Airworthiness Bell 206L Series
190-01226-11 Rev. 3
Page 2 of 23
1. INTRODUCTION................................................................................................................... 4
1.1 Purpose................................................................................................................. 4
1.2 Scope .................................................................................................................... 4
1.3 Document Control ................................................................................................. 4
1.4 Permission to Use Certain Documents ................................................................. 4
1.5 Definitions ............................................................................................................. 4
2. INSTRUCTIONS FOR CONTINUED AIRWORTHINESS .................................................... 5
2.1 Introduction ........................................................................................................... 5
2.2 Description of Alteration........................................................................................ 6
2.3 Control, Operating Information ............................................................................. 8
2.4 Servicing Information ............................................................................................ 8
2.5 Periodic Maintenance Instructions ........................................................................ 8
2.6 Troubleshooting Information ................................................................................. 11
2.7 Removal and Installation Information ................................................................... 20
2.8 Diagrams............................................................................................................... 21
2.9 Special Inspection Requirements ......................................................................... 22
2.10 Application of Protective Treatments .................................................................... 22
2.11 Data Relative to Structural Fasteners ................................................................... 22
2.12 Special Tools ........................................................................................................ 22
2.13 Additional Instructions........................................................................................... 22
2.14 Overhaul Period .................................................................................................... 22
2.15 ICA Revision and Distribution ............................................................................... 22
2.16 Assistance............................................................................................................. 23
2.17 Implementation and Record Keeping ................................................................... 23
3. AIRWORTHINESS LIMITATIONS ........................................................................................ 23
500W Series
Instructions for Continued Airworthiness Bell 206L Series
190-01226-11 Rev. 3
Page 3 of 23
1. INTRODUCTION
1.1 Purpose
This document is designed for use by the installing agency of the Garmin Model 500W series
GPS/WAAS Nav/Com as Instructions for Continued Airworthiness in response to Title 14 CFR Part
27.1529, Part 27 Appendix A. This ICA includes information required by the operator to adequately
maintain the Garmin 500W unit and additional equipment installed under STC SR02080SE.
1.2 Scope
This document identifies the Instruction for Continued Airworthiness for the Bell 206L series rotorcraft
modified by the installation of the Garmin Models 500W series GPS/WAAS Nav/Com unit and additional
equipment under STC SR02080SE.
1.3 Document Control
This document shall be released, archived, and controlled 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 of changes.
1.4 Permission to Use Certain Documents
Permission is granted to any corporation or person applying for approval of a Garmin Model 500W series
to use and reference appropriate STC documents to accomplish the Instructions for Continued
Airworthiness and show compliance with STC engineering data. This permission does not construe
suitability of the documents. It is the responsibility of the applicant to determine the suitability of the
documents for the ICA.
1.5 Definitions
The following terminology is used within this document:
1)
2)
3)
4)
5)
6)
7)
ACO: Aircraft Certification Office
AEG: Aircraft Evaluation Group
CFR: Code of Federal Regulations
FAA: Federal Aviation Administration
ICA: Instructions for Continued Airworthiness
PMI: Principle Maintenance Inspector
STC: Supplemental Type Certificate
500W Series
Instructions for Continued Airworthiness Bell 206L Series
190-01226-11 Rev. 3
Page 4 of 23
2. INSTRUCTIONS FOR CONTINUED AIRWORTHINESS
2.1 Introduction
Content, Scope, Purpose and Arrangement:
This document identifies the Instructions for
Continued Airworthiness for the modification of the
rotorcraft by installation of a 500W series
GPS/WAAS Nav/Com unit under the Garmin Bell
400W/500W HTAWS STC SR02080SE.
Applicability:
Applies to Bell model 206L rotorcraft altered by
installation of a 500W 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 publications:
Garmin 005-00610-03 Rev. 2 “Equipment List
400W/500W Series Installation Bell 206 and 407
STC” or later FAA Approved Revisions
Garmin 190-01226-01 Rev. 3 “500W Series
Rotorcraft STC Installation Manual” or later FAA
Approved Revisions
Additional Maintenance Data:
Garmin 190-01226-09 Rev. 1 “400W/500W Series
Installation Bell 206L Series” or later FAA
Approved Revisions
Retention:
This document, or the information contained within,
will be included in the rotorcraft’s permanent
records.
500W Series
Instructions for Continued Airworthiness Bell 206L Series
190-01226-11 Rev. 3
Page 5 of 23
2.2 Description of Alteration
This STC upgrades existing avionics for the Bell 206L rotorcraft as summarized below.
The Garmin Model 500W Series GPS/WAAS Nav/Com unit is a 6 ¼ inch wide unit mounted in the center
pedestal of the Bell 206L. The 500W 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 206L forward engine cowl. A monitored avionics
cooling fan is installed in the center pedestal with a fan fail fault annunciation located in the existing Bell
206L annunciator panel.
Installation of optional remote HTAWS annunciators, and optional cyclic stick switches for remote control
of COM and HTAWS functions are also covered under this STC.
The 500W Series unit can interface to the Garmin G500H system GDU 620 PFD/MFD for display of
navigation information and 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 with the text,
“APPROVED FOR DAY/NIGHT VFR” is required to be in the pilot’s view.
The installed equipment is connected to an avionics bus that receives power as soon as the battery and
avionics master switches are turned on. Circuit breakers are installed on an overhead circuit breaker
panel as shown below. Note: dual navigator system installation as shown.
500W Series
Instructions for Continued Airworthiness Bell 206L Series
190-01226-11 Rev. 3
Page 6 of 23
The installed 500W Series equipment can be accessed as described below:
LRU Access: Bell models 206L
1. GA 35/36/37 ANTENNA: FS82.0 remove by extracting the four mounting screws in the body of the
antenna. Note: location may vary slightly depending whether or not a dual navigator system is
installed.
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 bottom of grip.
4. COOLING FAN: FS29.3 Access by removing copilot side (LH) cover plate. Remove by extracting
three mounting screws and disconnecting connector.
5. 500W SERIES UNIT: FS38.6 Access or remove by using a 3/32 allen head screwdriver to loosen
the locking mechanism through the access hole on the front of the unit. Note: location may vary
slightly depending whether or not a dual navigator system is installed.
2.2.1 Weight and Balance Information
ITEM DESCRIPTION
GPS 500W (Unit Only)
GPS 500W (Installed with rack and back plate)
GNS 530W (Unit Only)
1
GNS 530W (Installed with rack and back plate)
GNS 530AW (Unit Only)
GNS 530AW (Installed with rack and back plate)
2 GCF 3XX 3‐Port Cooling Fan (Unit Only)
GA 35 GPS/WAAS Antenna (Unit Only)
3 GA 36 GPS/WAAS Antenna (Unit Only)
GA 37 GPS/WAAS + XM Antenna (Unit Only)
PART NUMBER
011‐01062‐XX
011‐01064‐XX
011‐01066‐XX
013‐00103‐00
013‐00235‐00
013‐00244‐00
013‐00245‐00
Moment ARM [IN]
WEIGHT
[LB] LONGITUDINAL LATERAL
5.7
6.8
7.0
38.95
0.0
8.2
7.0
8.2
0.70
29.3
3.6
0.47
73.50/78.50
0.0/±5.0
0.47
(Single/ Dual (Single/Dual
Installation) Installation)
0.50
[1] A rotorcraft weight and balance is required after installation of the 500W Series Unit. 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 longitudinal arm is measured in terms of the fuselage station (FS) number.
500W Series
Instructions for Continued Airworthiness Bell 206L Series
190-01226-11 Rev. 3
Page 7 of 23
[3] The lateral arm is measured in terms of the butt line (BL). The centerline of the helicopter is BL0.00.
The moment arms to the left side (looking forward) are negative (-) and the moment arms to the right
side are positive (+).
[4] Location of the 500W Series unit and GPS antenna may vary slightly depending whether or not a
dual navigator system is installed.
2.3 Control, Operating Information
See the Pilot’s Guides or the 500W Rotorcraft STC Installation Manual for system operation and self-test
information. The 500W Rotorcraft STC Installation Manual is listed under the reference documentation in
paragraph 2.1 of this document, and the Pilot’s Guides are listed in the related documents section of the
500W Rotorcraft STC Installation Manual.
2.4 Servicing Information
None. In the event of system failure, troubleshoot the 500W Series unit in accordance with Section 2.6.
2.5 Periodic Maintenance Instructions
The 500W Series units are designed to detect internal failure. A thorough self-test is executed
automatically upon application of power to the units, and built-in test is continuously executed. Detected
errors are indicated on the equipment via failure annunciations.
Maintenance of the components installed by this STC is on condition, except as noted in the following
table.
Table 1 Periodic Maintenance Inspections
Item
500W Series
Unit
500W Series
Mounting Rack
Interval
12 Months
12 Months
Description/Procedure
Conduct a visual inspection (look for signs of wear, deterioration,
or damage to wires, backshells, or connectors) of the 500W
Series unit and wiring harnesses to ensure installation integrity:
1. Inspect the unit for security of attachment.
2. Inspect all knobs and buttons for legibility.
3. Inspect condition of wiring, routing and
attachment/clamping.
4. Inspect related antennas for proper sealing and attachment.
5. Inspect integrity of shield terminations.
6. Inspect for signs of corrosion on equipment, racks and it’s
backplates and rack mounting.
Inspect the mounting rack for any signs of 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 rack to rotorcraft structure and re-torque 12 to 15 in-lbs
if required.
Replace unit mounting rack if any damage has been found.
Avionics
Cooling Fan
12 Months
Conduct a visual inspection (look for signs of wear, deterioration,
or damage to wire harness and connector) of the cooling fan to
ensure installation integrity. Inspect for signs of corrosion on
equipment and mounting brackets.
500W Series
Instructions for Continued Airworthiness Bell 206L Series
190-01226-11 Rev. 3
Page 8 of 23
Item
500W Series
Mounting Rack
Interval
Every 2000
flight hours or
ten (10)
years,
whichever is
first
Description/Procedure
Perform an electrical bonding test:
1. Remove 500W Series unit from mounting rack
2. Measure the resistance between the mounting rack and a
nearby exposed portion of aircraft metallic structure and
verify it is less than 10 milliohms.
In the event of a bonding test failure, remove the rack and verify
that the countersunk areas around the holes that are used to
attach the rack are free of corrosion or other debris. Clean
countersunk areas using an approved solvent per Bell
specification BHT-ELEC-SPM CHP8. Reattach the rack and reverify the resistance between the mounting rack and nearby
exposed portion of aircraft metallic structure and ensure that the
resistance is less than or equal to 2.5 milliohms.
Reinstall the 500W Series unit in the mounting rack.
Perform an electrical bonding test on antennas installed by this
STC:
GPS Antennas
(Only if antenna
is installed by
this STC)
Every 2000
flight hours or
ten (10)
years,
whichever is
first
1. Disconnect coaxial cable(s) from the antenna connector(s).
2. Measure the resistance between the antenna connector and
a nearby exposed portion of the antenna foil ground plane.
3. Verify the resistance is equal to or less than 10 milliohms.
4. Reconnect the coaxial cable(s) to the antenna connector(s)
and ensure it is secured.
In the event of bonding test failure, remove antenna, and clean
and prepare the hardware mating surfaces as follows:
Clean countersunk areas of the antenna. Clean countersunk
areas using an approved solvent per Bell Specification BHTELEC-SPM, CHP 8.
Reinstall using unit replacement procedures contained in the
installation drawing listed in paragraph 2.1 of this document. Any
reworked antenna installation shall have a resistance of less than
or equal to 2.5 milliohms.
Perform an electrical bonding test:
1. Measure the resistance between the metallic body of each
Vivisun annunciator and the console assembly and verify
that the resistance is less than or equal to 20 milliohms.
HTAWS
Annunciators (if
installed)
Every 2000
flight hours or
ten (10)
years,
whichever is
first
In the event of bonding test failure:
1. Inspect the grounding strap which is installed between the
annunciator panel and the instrument panel. Ensure that the
fastener hardware is secure and that the strap is not
damaged. If damaged, replace the bonding strap.
2. If problem persists, remove the bonding strap and clean the
mating surfaces of the bonding strap and
annunciator/instrument panel per Bell specification BHTELEC-SPM CHP8.
3. Reinstall the bonding strap and verify that the resistance
between the annunciators and the console assembly after
prepping bonding surface is less than 10 milliohms.
500W Series
Instructions for Continued Airworthiness Bell 206L Series
190-01226-11 Rev. 3
Page 9 of 23
2.5.1 Cleaning the Front Panel
The front bezel, keypad, and display can be cleaned with a soft cotton cloth dampened with clean water.
DO NOT use any chemical-cleaning agents. Care should be taken to avoid scratching the surface of the
display.
2.5.2 Display Backlight
The display backlight lamp is rated by the manufacturer as having a usable life of 20,000 hours. This life
may be more or less than the rated time depending on the operating conditions of the 500W Series unit.
Over time, the backlight lamp may dim and the display may not perform as well in direct sunlight
conditions. The user must determine by observation when the display brightness is not adequate.
Contact the Garmin factory repair station when the backlight lamp requires service.
2.5.3 Battery Replacement
The 500W series has an internal keep-alive battery that will last about 10 years. The battery is used for
GPS system information. Regular planned replacement is not necessary. The 500W series will display a
‘low battery’ message when replacement is required. Once the low battery message is displayed, the
battery should be replaced within 1 to 2 months.
If the battery is not replaced and becomes totally discharged, the 500W Series unit will remain fully
operational, but the GPS signal acquisition time may be increased. This acquisition time can be reduced
by entering a new seed position each time the unit is powered on. There is no loss of function or
accuracy of the 500W Series unit with a dead battery.
The battery must be replaced by the Garmin factory repair station or factory authorized repair station.
500W Series
Instructions for Continued Airworthiness Bell 206L Series
190-01226-11 Rev. 3
Page 10 of 23
2.6 Troubleshooting Information
If error indications are displayed on the 500W series unit, consult the Troubleshooting section contained
below:
Table 2 Troubleshooting Guide
Problem
Possible Cause
Solution
The 500W Series
unit does not power
on.
 The unit is not getting power to 
the main connector P5001.
Make sure power is connected to the
main 78-pin connector P5001, pins 19
and 20 and ground to P5001, pins 77
and 78. Check circuit breakers and
main avionics switch.
The 500W Series
unit does not
compute a position.
 Not receiving signals.

Check the GPS antenna connections.
Make sure the aircraft is clear of
hangars, buildings, trees, etc.

Wait 20 minutes for unit to complete
cycle.
GPS signal levels
drop when avionics
are turned on.
 Noise interference from other
avionics.

Turn all avionics off, then turn on each
piece one at a time to isolate the
source of the interference. Route GPS
cable and locate GPS antenna away
from sources of interference.
The GPS signal
levels are very low.
 Improper antenna installation or 
coax routing.
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, buildings, trees, etc.
 RF interference at 1575.42 MHz 
from VHF COM.
Move GPS antenna further from the
COM antenna. Add a 1575.42 MHz
notch filter in COM coax. Fix or
replace the COM. Disconnect the ELT
antenna coax to check for possible reradiation.
 The PTT input is not being
pulled low.
Check that the PTT (mic key) input is
pulled low for transmit.
The 500W Series
unit does not
transmit.

 No transmit power to the COM. 
Make sure power input is connected
to the COM 25-pin connector P5002
11 and 12 and ground to P5002 21
and 22.
 The input voltage is too low.
Increase input supply voltage to
>12VDC. (>24VDC for 530AW
models)

The sidetone level is  Wrong type of headsets, or level 
too low or too high.
needs adjustment.
OBS Resolver won’t  Incompatible resolver or
calibrate.
improper connection.
500W Series
Instructions for Continued Airworthiness Bell 206L Series

If necessary, adjust the sidetone level.
Sidetone adjustment is found on the
COM Setup page.
Check the resolver specifications and
wiring.
190-01226-11 Rev. 3
Page 11 of 23
Problem
OBS indication on
500W Series unit
does not agree with
OBS setting.
Possible Cause
Solution
 500W Series unit resolver input 
not calibrated correctly.
Check wiring and calibration.
 Resolver has not been
calibrated.
500W Series unit is  ARINC 429 input port speed not 
not receiving
correct
heading from
compass system
(ARINC 429 heading
 Wiring connections are

input used)
incorrect.
Check ARINC 429 input port speed
setting for port that device is
connected to and verify that the speed
is correct for that device.
RMI pointer does not  Desired RMI source has not
indicate correctly
been selected.

Check the OBI source selection on the
Main CDI/OBS Config page.
 Wiring connections are
incorrect.

Check wiring.
 Incorrect configuration.

Check the DME Channel Mode on the
VOR/LOC/GS CDI page.
 Wiring connections are
incorrect.

Check wiring.
Tuning data not
updating DME
Check wiring.
ARINC 429 device is  500W Series unit ARINC 429

not receiving data
output not configured correctly.
from the
 ARINC 429 input port speed not 
500W/530W.
correct
Check ARINC 429 output port setting
for port that device is connected to.
 Wiring connections are
incorrect.
RS-232 device is not  500W Series unit RS-232 port
not configured correctly.
communicating with
 Improper setup on the remote
the 500W/530W.
device.
 Device not compatible, or
improper connection.

Check wiring.


Check RS-232 port setting for port
that device is connected to.
Verify the configuration of the other
device.
Verify 500W Series unit RX is
connected to remote device TX and
500W Series unit TX is connected to
remote device Rx.
Verify that there is only one TX source
per RX port.
Check wiring.

Check wiring.

Replace fan.
Fan Fail
Annunciation.
 Multiple TX lines connected
together.
 Wiring connections are
incorrect.
 Wiring connections are
incorrect.
 Fan has failed.
500W Series
Instructions for Continued Airworthiness Bell 206L Series



Check ARINC 429 input port speed
setting for port that device is
connected to and verify that the speed
is correct for that device.
190-01226-11 Rev. 3
Page 12 of 23
2.6.1 500W Series Alerts
The 500W Series will display a number of alerts. These are listed in the following table.
Table 3. 500W Series Alert Troubleshooting Guide
Alert Text
Possible Cause
Solution
 The ADS-B traffic system may have lost  Check the applicable ADS-B
traffic source status page in Aux
GPS position or detected an internal
mode
fault.
 Contact Garmin technical
support.
ADS-B transmit has failed  ADS-B unit is not able to transmit a
 Check system and antenna
wiring. If problem persists
message due to a failure with the ADScontact Garmin technical
B system or antenna(s).
support.
ADS-B is not transmitting  The ADS-B unit has detected a position  Verify GPS position source is
position
functional. If problem persists
input fault.
contact Garmin technical
support.
ADS-B fault - Check
 An equipment fault has been detected.  Contact Garmin technical
ADS-B Status Page
support.
ADS-B traffic has failed
ADS-B - Connection has  The GNS is configured for a traffic
been lost
device but is not receiving data from it.
Traffic will not be displayed on the
GNS.
ADS-B Traffic Alerting not  The ADS-B traffic system is reporting
available
that the CSA application has failed.
Traffic alerting on ADS-B traffic is
unavailable.
Airport terrain database  The 500W Series unit has detected a
integrity error
problem with a database on the Terrain
data card. The message “<database
name> database integrity error”
indicates the data base in error.
Audio database error out  The 500W-series unit has detected a
of date or missing
problem with the built-in HTAWS Audio
Data-base. HTAWS audio alerts are
not available.
Aviation database
 The 500W Series unit has detected a
integrity error
problem with a database on the
NavData® card. The message
“<database name> database integrity
error” indicates the data base in error.
Basemap database
 The 500W Series unit has detected a
integrity error
failure in the built-in basemap (land
data) database. Land data does not
appear on the Map Page. Other unit
functions continue to work normally.
Boot block verify failed -  System integrity testing has determined
Return unit for repair
that the boot block has become
corrupted.
CDI key stuck
 The CDI key is stuck in the enabled (or
“pressed”) state. Try pressing the CDI
key again to cycle its operation.
500W Series
Instructions for Continued Airworthiness Bell 206L Series
 Verify traffic system is
configured correctly. If problem
persists contact Garmin
technical support.
 Ensure the aircraft has a clear
view of the sky. If problem
persists contact Garmin
technical support.
 The data is not usable, try
reloading the information onto
the card. If that does not solve
the problem replace the card.
 Contact Garmin technical
support.
 The data is not usable, try
reloading the information onto
the card. If that does not solve
the problem replace the card.
 Reload the Basemap database
 Contact Garmin technical
support.
 Contact Garmin technical
support.
190-01226-11 Rev. 3
Page 13 of 23
Alert Text
Possible Cause
CDI key disabled
 “Ignore CDI key” has been selected on
the MAIN CDI/OBS CONFIG page.
Check unit cooling
 The 500W Series unit has detected
excessive display backlighting
temperature. The backlighting has
been automatically dimmed to reduce
the temperature.
 The unit has detected a failure in its
communications transceiver.
COM has failed (530W
only)
Solution
 Go to the MAIN CDI/OBS
CONFIG page and deselect
“Ignore CDI key”
 Check for adequate ventilation
or check cooling airflow. Refer
to Section 2.7 of the Installation
Manual.
 Contact Garmin technical
support.
 Contact Garmin technical
 Internal system-to-system
support. If the COM board is
communication between the main
processor and the COM transceiver has still working, it will automatically
tune to 121.500 MHz. Transmit
failed. Operational status of the COM
and receive functions may still
transceiver is unknown.
operate regardless of the
displayed frequency.
COM needs service
 Contact Garmin technical
 The unit has detected a failure in its
(530W only)
support
communications transceiver. The COM
transceiver may still be usable.
COM push-to-talk key
 The external push-to-talk (PTT) switch  Try pressing the PTT switch
stuck (530W only)
again to cycle its operation.
is stuck in the enabled (or “pressed”)
state.
 Wiring is incorrect.
 Check Wiring
COM remote transfer key  The remote COM transfer switch is
 Try pressing the switch again to
is stuck (530W only)
cycle its operation.
stuck in the enabled (or “pressed”)
state.
 Verify the wiring is correct.
COM is not responding
(530W only)
 If the message persists, contact
Garmin technical support.
COM transfer key stuck
(530W only)
 The COM flip-flop key is stuck in the
enabled (or “pressed”) state.
 Try pressing the switch again to
cycle its operation.
 If the message persists, contact
Garmin technical support.
COM transmitter power  The unit has detected excessive unit
 Check for adequate ventilation
has been reduced (530W temperature. The COM transceiver
or check cooling airflow. Refer
only)
to Section 2.7 of the Installation
transmit power has been automatically
Manual.
reduced to compensate for the
condition.
 Insufficient voltage level
 Check the input voltage
Configuration error Config service req’d
 The configuration information has been  Reconfigure the unit
lost or corrupted.
Data transfer cancelled
(crossfill is busy)
 An attempt to transfer flight plan data
during a unit-to-unit crossfill was
cancelled.
500W Series
Instructions for Continued Airworthiness Bell 206L Series
 The host unit is busy. Wait until
any previous crossfill operation
is complete, before reattempting
the transfer.
190-01226-11 Rev. 3
Page 14 of 23
Alert Text
Data transfer cancelled
(data invalid)
Data transfer cancelled
(version mismatch)
Data transfer error,
please
re-transmit
Possible Cause
Solution
 Select a user waypoint and re An attempt to transfer a single user
attempt the transfer.
waypoint during a unit-to-unit crossfill
was cancelled. No waypoint was
specified on the Crossfill Page.
 If necessary, update the
 An attempt to transfer data during a
database(s) so they match.
unit-to-unit crossfill was cancelled. The
database versions of the two 500Wseries unit are not identical.
 An error was detected during unit-to-unit  The data transfer should be reattempted.
crossfill of user data (user waypoints
and/or flight plans).
 Contact Garmin technical
 The 500W Series unit has detected a
support.
failure in the display backlighting.
Do not use for navigation  The 500W Series unit is in Demo Mode  Check that the DEMO MODE
SELECT pin, P5001 Pin 75, is
and must not be used for actual
not connected.
navigation.
G/S has failed
 Contact Garmin technical
 The unit has detected a failure in its
(530W only)
support.
glideslope receiver.
Display backlight failure
 Internal system-to-system
communication between the main
processor and the glideslope receiver
has failed. Operational status of the
glideslope receiver is unknown.
G/S needs service
 The unit has detected a failure in its
(530W only)
glideslope receiver. The glideslope
receiver may still be usable.
GDL 69 is not responding  No data is being received from the GDL
69.
G/S is not responding
(530W only)
 Contact Garmin technical
support.
 Contact Garmin technical
support.
 Check for proper configuration
 Check wiring
 Contact Garmin technical
support.
GDL 88 ADS-B traffic has  The GDL 88 is reporting that it has a
 Refer to the GDL 84H/88H STC
failed
Installation Manual.
problem processing ADS-B traffic data.
The traffic picture may be degraded.
GDL 88 Traffic Alerting
 The GDL 88 is reporting to the GTN that  Ensure the aircraft has a clear
not available
view of the sky. If problem
the CSA application has failed. Traffic
persists contact Garmin
alerting on ADS-B traffic is unavailable.
technical support.
GDL 88 Connection has  The GNS unit cannot communicate with  Check for proper configuration
been lost
the datalink
 Ensure the GDL 88 is powered
up
 Check wiring
GDL 88 ADS-B transmit  The GDL 88 is not able to transmit an
 Check the GDL 88 status page
has failed
in Aux mode
ADS-B message due to a failure with
the GDL 88 system or antenna(s)
 Refer to the GDL 84H/88H STC
Installation Manual
GDL 88 ADS-B is not
 Refer to the GDL 84H/88H STC
 The GDL 88 has detected a position
transmitting position
Installation Manual
input fault
 The GDL 88 has detected an equipment  Check the GDL 88 status page
fault
in Aux mode
500W Series
Instructions for Continued Airworthiness Bell 206L Series
190-01226-11 Rev. 3
Page 15 of 23
Alert Text
Possible Cause
Solution
 Refer to the GDL 84H/88H STC
Installation Manual
GDL 88 ADS-B fault Check GDL 88 Status
Page
 GPS antenna cable is shorted
GPS is not responding –
check GPS antenna
 Internal system-to-system
(main software version
communication between the main
3.20 and later).
processor and the GPS receiver has
failed. Operational status of the GPS
receiver is unknown.
GPS needs service
 The 500W Series unit has detected a
failure in its GPS receiver.
GTN transfer canceled,  The protocol version or database
version mismatch
version don’t match between the GTN
and GNS units
Insufficient Terrain
 The installed terrain database does not
Database Resolution
have sufficient resolution to support
HTAWS
Large magnetic variance  A valid value of magnetic variation is not
available for this location.
 Verify all course angles
Loss of integrity — cross-  Improper antenna installation or coax
check NAV
routing
 Antenna shaded from satellites
 RF interference at 1575.42 MHz from
VHF COM.
 Verify that the center conductor
is not shorted to the braid in the
coaxial cable.
 Contact Garmin technical
support.
 Contact Garmin technical
support.
 Load the most current cycles of
the navigation database to each
unit
 Load a 6 arc second terrain
database
 Contact Garmin technical
support.
 Check GPS antenna
installation, connections, and
cable routing. The GPS
antenna must be mounted on
the top of the aircraft.
 Make sure the aircraft is clear of
hangars, buildings, trees, etc.
 Move GPS antenna further from
the COM antenna. Add a
1575.42 MHz notch filter in
COM coax. Fix or replace the
COM. Disconnect the ELT
antenna coax to check for
possible re-radiation.
Low Battery - Unit Needs  Time data may have been lost due to a  Contact Garmin technical
Service
support.
memory battery failure.
MAIN processor requires  The 500W Series unit has detected a
service
failure in the main system processor.
 Contact Garmin technical
support.
No altitude input is being  No altitude data is being received from
received
RS-232 (Serializer: Icarus, Rosetta or
Shadin) or grey code inputs.
No basemap data
 The 500W Series unit has detected a
available
failure in the built-in basemap (land
data) memory. Land data does not
appear on the Map Page. Other unit
functions continue to work normally.
 Refer to Table 2 “RS-232 device
is not communicating with the
500W/530W”.
 Contact Garmin technical
support to reload the basemap
data.
500W Series
Instructions for Continued Airworthiness Bell 206L Series
190-01226-11 Rev. 3
Page 16 of 23
Alert Text
Possible Cause
Solution
Not receiving input data  No data has been received on the
 Refer to Table 2 “ARINC 429
on 429 Channel #1 or #2 ARINC 429 channel #1 connection for a device is not receiving data from
the 500W/530W”
period exceeding five seconds.
Not receiving input data  No data has been received on one (or  Refer to Table 2 “RS-232 device
on 232 Channel #(1
is not communicating with the
more) of the RS-232 channel
through 5)
500W/530W”
connections for a period exceeding ten
seconds.
Not receiving traffic data  No traffic data is being received.
 Check for proper configuration
 Check the wiring
NRST key stuck (GPS
500 only)
OBS key stuck
OBS not available
 Contact Garmin technical
support.
 The NRST key is stuck in the enabled  Try pressing the NRST key
again to cycle its operation. If
(or “pressed”) state.
problem persists contact
Garmin technical support.
 The OBS key is stuck in the enabled (or  Contact Garmin technical
support.
pressed) state. Try pressing the OBS
key again to cycle its operation.
 Select a waypoint
 No destination waypoint has been
selected.
 The GPS receiver cannot currently
determine its position.
Obstacle database
integrity error
RAIM position warning
Searching the sky
Stored data was lost
TAWS has failed
TAWS inhibit key stuck
 Refer to Table 2 “The 500W
Series unit does not compute a
position.”
 The data is not usable. Try
 The 500W Series unit has detected a
reloading the information onto
problem with a database on the Terrain
the card. If that does not solve
data card.
the problem replace the card.
 Wait for GPS satellite geometry
 Although sufficient GPS satellite
to improve.
coverage may exist, Receiver
Autonomous Integrity Monitoring
(RAIM) has determined the information
from one or more GPS satellites may
be in error.
 The 500W Series unit is searching the  Wait 20 minutes for unit to
complete cycle or until the
sky for GPS satellites.
current position is located.
 If system was not reset contact
 All user waypoints, flight plans and
system settings have been lost due to a Garmin technical support.
memory battery failure or system reset.
 The 500W Series unit has detected a
failure in its TAWS system.
 Ensure that terrain database is
inserted in right most card slot.
 Reload the terrain database.
 Contact Garmin technical
support.
 The external TAWS inhibit key is stuck.  Verify that the wiring is not
shorted to ground.
 Contact Garmin technical
support.
500W Series
Instructions for Continued Airworthiness Bell 206L Series
190-01226-11 Rev. 3
Page 17 of 23
Alert Text
Possible Cause
Solution
 The external HTAWS aural suppression  Try pressing the TAWS mute
key again to cycle its operation.
input is stuck
If problem persists contact
Garmin technical support.
TAWS reduced protection  The external TAWS reduced protection  Try pressing the TAWS reduced
key is stuck
protection key to cycle its
key is stuck
operation. If the problem
persists contact Garmin
technical support.
TERRAIN configuration  The current Terrain configuration is not  Reconfigure the unit.
conflict
supported by the hardware.
TAWS mute caution key
is stuck
TERRAIN configuration
has changed
 The unit’s terrain settings have
changed since it was last turned on in
normal mode.
 Reconfigure TERRAIN settings
TERRAIN has failed
 The unit has detected a failure in the
terrain system.
 Ensure that Terrain database is
inserted in the right most card
slot.
 Reload the TERRAIN database.
 Contact Garmin technical
support
Terrain database integrity  The 500W Series unit has detected a
 Reloading the information onto
error
the card.
problem with a database on the Terrain
data card.
 Replace the card.
 Contact Garmin technical
support.
Traffic device has failed
 The 500W Series unit cannot
communicate with the traffic system
and/or the traffic system is reporting a
system failure.
Traffic device needs
service
 The traffic device is reporting a system
failure.
User card format
unknown
 A data card has been inserted, but the
format of the card is not recognized.
VLOC has failed (530
only)
 The GNS 530W has detected a failure
in its VLOC receiver.
 Internal system-to-system
communication between the main
processor and the VLOC receiver has
failed. Operational status of the VLOC
receiver is unknown.
VLOC needs service
 The unit has detected a failure in its
(530W only)
VLOC receiver. The VLOC receiver
may still be usable.
VLOC remote transfer
 The remote VLOC transfer switch is
key is stuck (530W only)
stuck in the enabled (or “pressed”)
state.
VLOC is not responding
(530W only)
500W Series
Instructions for Continued Airworthiness Bell 206L Series
 Check for proper configuration
 Check for correct wiring
 Refer to the Traffic system
installation manual.
 Refer to the Traffic system
installation manual.
 Reload the information onto the
card. If that does not solve the
problem replace the card.
 Contact Garmin technical
support.
 Contact Garmin technical
support.
 Contact Garmin technical
support.
 Try pressing the switch again to
cycle its operation.
 Contact Garmin technical
support.
190-01226-11 Rev. 3
Page 18 of 23
Alert Text
Possible Cause
VLOC transfer key stuck  The VLOC flip-flop key is stuck in the
(530W only)
enabled (or “pressed”) state.
Stormscope device has
failed
 The 500W- Series unit cannot
communicate with the WX-500.
 The WX-500 is reporting a system
failure.
Solution
 Try pressing the VLOC flip-flop
key again to cycle its operation.
 Contact Garmin technical
support.
 Check for proper configuration
 Check the wiring
 Refer to the WX-500 installation
manual for additional
troubleshooting information.
Stormscope heading has  The WX-500 is reporting invalid heading  Check for proper configuration
failed
of WX-500
data.
 The failure may be within the
WX-500 or other connected
equipment.
500W Series
Instructions for Continued Airworthiness Bell 206L Series
190-01226-11 Rev. 3
Page 19 of 23
2.7 Removal and Installation Information
If any work has been done on the rotorcraft that could affect the system wiring, antenna cable, or any
interconnected equipment, verify the 500W Series unit power-up self-test sequence is successfully
completed and no failure messages are annunciated.
Whenever removing or installing units, remove power from the LRU by removing rotorcraft power or
opening the LRU circuit breaker.
2.7.1 500W Series Unit
2.7.1.1 Removal
1. Insert a 3/32-inch hex drive tool into the access hole at the bottom of the unit face.
2. Rotate the hex tool counterclockwise until the unit is forced out about 3/8 inches and can be
freely pulled from the rack.
2.7.1.2 Installation
1. Slide the 500W unit in the rack straight in until it stops, about 1 inch short of the final position.
2. Insert the hex drive tool into the access hole at the bottom of the unit face.
3. Rotate the hex tool clockwise while pressing on the left side of the bezel until the unit is firmly
seated in the rack.
NOTE
The installation configuration and user settings are stored internally in the 500W Series
unit, and will be lost when the 500W Series is replaced with a new unit.
Original 500W Series unit is Reinstalled
If the original 500W Series is reinstalled, then no configuration is required.
New, Repaired or Exchange 500W Series is Installed
If the 500W Series unit is removed for repair and reinstalled, or if the 500W unit is removed and replaced
with a different 500W Series unit, then verify the correct software versions are on the 500W Series unit
as specified in the Equipment List 400W/500W Series Installation Bell 206 and 407 STC listed in
paragraph 2.1 of this document. In addition, complete the ‘Post Installation Configuration & Checkout
Procedures’ contained in the 500W Rotorcraft STC Installation Manual listed in paragraph 2.1 of this
document to restore the proper installation configuration settings.
2.7.1.3 Return to Service
After removing and reinstalling the 500W Series unit per the instructions above, verify that the power-up
self-test sequence is successfully completed and no failure messages are annunciated.
Note: There are no special handling requirements for the 500W Series units.
2.7.2 GA 35 GPS, GA 36 GPS, and GA 37 GPS/XM Antennas
2.7.2.1 Removal
1. Remove the screws from the outside of the rotorcraft.
2. Remove old sealant.
3. Lift the antenna off the rotorcraft and detach the coax (from the outside). If a GA 37 antenna
verify coax(s) are properly labeled with correct color band. Note: GPS coax is labeled with a blue
band and XM cable with a yellow band.
2.7.2.2 Installation
For GA 35, GA 36, or GA 37 GPS antenna installation, follow the installation procedures contained in the
installation drawing listed in paragraph 2.1 of this document.
500W Series
Instructions for Continued Airworthiness Bell 206L Series
190-01226-11 Rev. 3
Page 20 of 23
2.7.2.3 Return to Service
After removing and reinstalling the GPS antenna, verify the 500W Series unit power-up self-test
sequence is successfully completed and no failure messages are annunciated. If the unit is unable to
acquire satellites, move the rotorcraft away from obstructions which might be shading GPS reception. If
the situation does not improve, check the GPS antenna installation.
2.7.3 Cooling Fan
2.7.3.1 Removal
1. Extract the screws from the copilot side (LH side) center console cover plate.
2. Remove copilot side (LH side) center console cover plate.
3. Disconnect cooling fan electrical connector located under cooling ports on fan.
4. Extract the three (3X) cooling fan mounting screws to remove cooling fan.
2.7.3.2 Installation
1. Install cooling fan using removed hardware.
2. Reconnect electrical connector to cooling fan.
3. Reinstall center console cover plate using removed hardware, verifying silicone sponge foam
used to seal cooling fan intake remains in place on center console cover plate and properly
seals the fan intake to the louver installed on the center console cover plate.
2.7.3.3 Return to Service
After removing and reinstalling the cooling fan verify proper operation of the cooling fan. Apply power to
the avionics, verify the cooling fan is operating and the FAN FAIL light on the annunciator panel is not
illuminated.
2.8 Diagrams
Rotorcraft specific LRU locations and wire routing diagrams are contained in the 400W/500W Series
Installation drawing Bell 206L Series, listed in Section 2.1 of this document. Point to point wiring
diagrams are in the Appendix of the 500W Rotorcraft STC Installation Manual. Refer to the GNS 500W
Series Post-Installation Checkout Log retained in the rotorcraft permanent records for a list of the
interfaced equipment and port configurations.
500W Series
Instructions for Continued Airworthiness Bell 206L Series
190-01226-11 Rev. 3
Page 21 of 23
2.9 Special Inspection Requirements
2.9.1 Post-Lightning Strike Inspection
In the event of a suspected or actual lightning strike to the rotorcraft, the GA 35, GA 36, or GA 37 GPS
antenna installation shall be inspected to ensure that there is no structural damage around the areas
where lightning may have attached. If there is visible sign of damage to the antenna then it must be
replaced.
Verify that the 500W series unit receives and displays GPS satellite information normally.
2.9.2 Post-Hard Landing Inspection
In the event of a hard landing complete 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
FASTENER TYPE AND TORQUE
Location
(see Installation
Drawing)
6‐32 Screw
6‐32 Screw
8‐32 Screw
10‐32 Screw
10‐32 Screw
4±2 inch‐pounds
12‐15 inch‐pounds
12‐15 inch‐pounds
12‐15 inch‐pounds
20‐25 inch‐pounds
500W Unit Mounting
Rack
X
GPS Antenna
Cooling Fan
X
X
Cooling Fan Bracket
X
X
2.12 Special Tools
For electrical bonding testing, a milliohm meter is required.
2.13 Additional Instructions
None
2.14 Overhaul Period
The system does not require overhaul at a specific time period. Power on self-test and continuous BIT
will monitor the health of the 500W Series unit. If the unit indicates an internal failure, the unit may be
removed and replaced. See troubleshooting section 2.6 contained in this document.
2.15 ICA Revision and Distribution
To revise this ICA, a letter must be submitted to the ACO along with the revised ICA. The ACO will
obtain AEG acceptance, and approve any revision to the Airworthiness Limitations in Section 3. After
FAA acceptance/approval, Garmin will release the revised ICA for customer use, and provide any
required notification of the revision.
500W Series
Instructions for Continued Airworthiness Bell 206L Series
190-01226-11 Rev. 3
Page 22 of 23
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