Garmin | GMA™ 35 | Garmin GMA™ 35 Instructions for Continued Airworthiness GTN 6XX/7XX – Eurocopter AS350B2/B3

Garmin GMA™ 35 Instructions for Continued Airworthiness GTN 6XX/7XX – Eurocopter AS350B2/B3
Instructions for Continued
Airworthiness GTN 6XX/7XX Eurocopter AS350B2/B3
as installed in
(Make and Model Aircraft)
Reg. No. ___________
S/N __________
Dwg. Number:
190-01007-K8 Rev.2
Garmin International, Inc.
1200 E. 151st Street
Olathe, Kansas 66062 USA
Record of Revision
Rev.
Date
1
2
10/17/2013
3/22/2016
Description of Change
Initial Release
Updated Figures in Section 2.8 and Appendix A, Added instructions to
disable Airspace Altitude Labels
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  2016 Garmin Ltd. or its subsidiaries. All rights reserved.
Garmin International, Inc.
1200 E. 151st Street
Olathe, Kansas 66062 U.S.A.
Page ii
190-01007-K8 Rev.2
Instructions for Continued Airworthiness GTN 6XX/7XX - Eurocopter AS350B2/B3
Table of Contents
1. INTRODUCTION .....................................................................................................................1
1.1 Purpose ..................................................................................................................................... 1
1.2 Scope ........................................................................................................................................ 1
1.3 Document Control ...................................................................................................................... 1
1.4 Permission to Use Certain Documents ......................................................................................... 1
1.5 Definitions ................................................................................................................................. 1
1.6 Terminology .............................................................................................................................. 1
2. INSTRUCTIONS FOR CONTINUED AIRWORTHINESS ............................................................2
2.1 Introduction .............................................................................................................................. 2
2.2 Description of Alteration ............................................................................................................. 2
2.3 Control, Operation, and Testing Information ................................................................................ 2
2.4 Servicing Information ................................................................................................................. 3
2.5 Periodic Maintenance ................................................................................................................. 3
2.6 Troubleshooting Information ...................................................................................................... 7
2.7 Removal and Replacement Information ....................................................................................... 7
2.8 Equipment Location and Access .................................................................................................. 8
2.8.1 GTN STC Installation Equipment Layout ......................................................................... 8
2.8.2 GTN Navigator Installation ............................................................................................. 9
2.8.3 Circuit Breaker and GPS Switch Installation................................................................... 12
2.8.4 Wire Routing .............................................................................................................. 17
2.8.5 Weight and Balance .................................................................................................... 18
2.9 Diagrams ................................................................................................................................. 18
2.10 Special Inspection Requirements ............................................................................................. 19
2.11 Application of Protective Treatments ....................................................................................... 19
2.12 Data Relative to Structural Fasteners ....................................................................................... 19
2.13 Special Tools.......................................................................................................................... 19
2.14 Additional Instructions ............................................................................................................ 19
2.15 Overhaul Period ..................................................................................................................... 19
2.16 ICA Revision and Distribution .................................................................................................. 19
2.17 Assistance ............................................................................................................................. 19
2.18 Implementation and Record Keeping ....................................................................................... 19
3. AIRWORTHINESS LIMITATIONS SECTION ..........................................................................20
4. APPENDIX A - EQUIPMENT LOCATIONS AND WIRE ROUTING ............................................21
Table of Tables
Table
Table
Table
Table
Table
Table
1.
2.
3.
4.
5.
6.
Page iii
Maintenance Intervals for GTNs and GMA 35 ........................................................................... 3
Maintenance Intervals for Antennas Replaced Under this STC ................................................... 5
Bill of Materials for GTN Navigators and Optional GMA Audio Panel ........................................... 9
GTN Circuit Breaker Labels ................................................................................................... 12
Bill of Materials for Circuit Breaker and GPS Switch ................................................................ 12
Typical Weight and Balance of GTN and GMA 35 Installation .................................................. 18
190-01007-K8 Rev.2
Instructions for Continued Airworthiness GTN 6XX/7XX - Eurocopter AS350B2/B3
1. INTRODUCTION
1.1 Purpose
This document provides Instructions for Continued Airworthiness compliant with requirements of 14 CFR
§27.1529, and Part 27 Appendix A. This ICA is to be used by the agency installing Garmin GTN 6XX/7XX
navigators, GMA 35 audio panel, and additional equipment under the GTN 6XX/7XX Part 27 Approved
Model List (AML) STC, and includes information required by the operator to adequately maintain installed
items.
1.2 Scope
This document provides the Instructions for Continued Airworthiness for Eurocopter AS350B2/B3
rotorcraft, modified by the installation of the Garmin GTN 6XX/7XX and optional GMA 35 under the AML
STC.
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 2.16 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 GTN 6XX/7XX 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) ACO:
2) AEG:
3) BIT:
4) COM:
5) CFR:
6) FAA:
7) GPS:
8) ICA:
9) LED:
10) LRU:
11) NAV:
12) MFD:
13) PMI:
14) POI:
15) STC:
16) TSO:
17) WAAS:
Aircraft Certification Office
Aircraft Evaluation Group
Built-In Test
Communications
Code of Federal Regulations
Federal Aviation Administration
Global Positioning System
Instructions for Continued Airworthiness
Light Emitting Diode
Line Replaceable Unit
Navigation
Multi-Function Display
Principal Maintenance Inspector
Principal Operations Inspector
Supplemental Type Certificate
Technical Standard Order
Wide Area Augmentation System
1.6 Terminology
Except where specifically noted, references made to the ‘GTN’ will equally apply to the GTN
625/635/650/725/750. Also, ‘GTN 7XX’ refers specifically to the GTN 725 and GTN 750, and ‘GTN 6XX’
refers specifically to the GTN 625, GTN 635, and GTN 650.
190-01007-K8 Rev.2
Instructions for Continued Airworthiness GTN 6XX/7XX - Eurocopter AS350B2/B3
Page 1 of 21
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 aircraft by installation of the Garmin Instructions for
Continued Airworthiness GTN 6XX/7XX - Eurocopter AS350B2/B3.
Applicability:
Applies to aircraft altered by installation of the Garmin Instructions for
Continued Airworthiness GTN 6XX/7XX - Eurocopter AS350B2/B3.
Definition of Abbreviations:
See Sections 1.5 and Section 1.6
Precautions:
None
Units of measurement:
None
Referenced publications:
1) Garmin 190-01007-B1 Rev. 1, “GTN 6XX/7XX Part 27 AML STC System
Maintenance Manual” or later revisions
2) Garmin 190-01007-03 Rev. D, “GTN 725/750 Pilot’s Guide” or later
revisions
3) Garmin 190-01004-03 Rev. D, “GTN 625/635/650 Pilot’s Guide” or later
revisions
4) Eurocopter, “Standard Practices Manual” (MTC)
5) Eurocopter “Master Services Manual” (MSM) Chapter 4
Retention:
This document, or the information contained within, will be included in the
aircraft’s permanent records.
2.2 Description of Alteration
The GTN navigators are a family of aviation panel mounted retro-fit products. GTN units utilize a
touchscreen as the primary control interface. Traditional knobs and buttons have been minimized to
simplify access to the color multi-function display (MFD), NAV and COM transceiver, and GPS/WAAS
navigator functions.
The GTN 625/635/650 Navigators (Garmin Touch Navigation) are a family of 2.65-inch tall aviation panel
mounted retro-fit products that are intended to supersede the Garmin 400W Series Navigators. The GTN
6XX product family consists of the GTN 625 GPS/WAAS navigator, the GTN 635 GPS/WAAS/COM
navigator, and the GTN 650 GPS/WAAS/NAV/COM navigator.
The GTN 725/750 Navigators (Garmin Touch Navigation) are a family of 6.00-inch tall aviation panel
mounted retro-fit products that are intended to supersede the Garmin 500W Series Navigators. The GTN
7XX product family consists of the GTN 725 GPS/WAAS navigator, and the GTN 750 GPS/WAAS/NAV/COM
navigator.
The optional GMA 35 is an audio panel with a Marker Beacon receiver. The GMA 35 in conjunction with a
GTN 7XX provide full audio panel capability, for communication and navigation radios, headsets,
microphones, and speakers. The GMA 35 is mounted in a notch behind the GTN 7XX to free up mounting
space in the flight deck instrument panel.
2.3 Control, Operation, and Testing Information
See Garmin 190-01004-03 Rev. D, “GTN 625/635/650 Pilot’s Guide” and 190-01007-03 Rev. D, “GTN
725/750 Pilot’s Guide” for information on how to operate the system in normal mode.
See the Section 3 of the GTN 6XX/7XX PART 27 AML STC SYSTEM MAINTENANCE MANUAL, Section 3 for
details on how to operate and access configuration mode and diagnostic pages, and Section 1.5 for
document part numbers. See Section 6 for general ground checks and system test procedures.
See GTN 6XX/7XX PART 27 AML STC SYSTEM MAINTENANCE MANUAL for a system description.
190-01007-K8 Rev.2
Instructions for Continued Airworthiness GTN 6XX/7XX - Eurocopter AS350B2/B3
Page 2 of 21
2.4 Servicing Information
None.
In the event of system failure, troubleshoot the GTN 6XX/7XX and GMA 35 in accordance with Section 4
of the GTN 6XX/7XX PART 27 AML STC SYSTEM MAINTENANCE MANUAL
2.5 Periodic Maintenance
The GTN and GMA 35 are designed to detect internal failures. A thorough self-test is executed
automatically upon application of power to the units, and built-in tests (BIT) are continuously executed.
Detected errors are indicated as failure annunciations, system messages, or a combination of the two.
Operation of the GTN 6XX/7XX and GMA 35 is not permitted unless the inspections described in this
section have been completed within time intervals prescribed in Table 1 or Table 2 if applicable. All
antennas connected to the GTN should be maintained in accordance with maintenance and inspection
data appropriate for the antenna installation.
Table 1. Maintenance Intervals for GTNs and GMA 35
ITEM
INTERVAL
1. EQUIPMENT REMOVAL &
REPLACEMENT
ON CONDITION
DESCRIPTION/PROCEDURE
Removal and replacement of the following items.
(1) GTN 6XX/7XX or GMA 35 units
(2) NAV antenna cable splitter
(3) NAV antenna cable diplexer
(4) Fan
See Section 5 of the GTN 6XX/7XX PART 27 AML STC SYSTEM
MAINTENANCE MANUAL for instructions.
2. DISPLAY BACKLIGHT
ON CONDITION
The display backlight LEDs are rated by the manufacturer as having a
usable life of at least 36,000 hours. This life may be more or less than the
rated time depending on the operating conditions of the GTN. 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
suitable for its intended use. Contact the Garmin factory repair station when
the backlight lamp requires service.
3. BATTERY REPLACEMENT
ON CONDITION
The GTN 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 GTN 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 GTN unit will remain fully operational, but the GPS signal
acquisition time may be increased. There is no loss of function or accuracy
of the GTN unit with a dead battery.
The battery must be replaced by the Garmin factory repair station or factory
authorized repair station.
190-01007-K8 Rev.2
Instructions for Continued Airworthiness GTN 6XX/7XX - Eurocopter AS350B2/B3
Page 3 of 21
ITEM
INTERVAL
4. ELECTRICAL BONDING
CHECK, GTN/GMA
BOND CHECK TO BE
PERFORMED EVERY 10
YEARS OR 1800 FLIGHT
HOURS, WHICHEVER
COMES FIRST.
THE CHECK IS TO BE
PERFORMED DURING THE
AS350 600 FLIGHT
HOUR /24 MONTH
INSPECTION
5. VISUAL INSPECTION
DESCRIPTION/PROCEDURE
Perform an electrical bonding check as follows:
1. Remove the GTN and GMA 35 (if installed) from the mounting rack(s)
2. Remove the backplate assembly from the rack(s).
NOTE For GTN 7XX only, if the GMA 35 is installed, it must be removed
from its rack and the GMA 35 backplate assembly must be
removed prior to performing Step 3. When a GMA 35 bonding
check is planned, perform the GMA 35 bonding check prior to
reinstalling the GTN backplate assembly to the rack.
3. Measure the resistance between each mounting rack and nearby
exposed portion of metallic structure and verify that the resistance is
less than or equal to 10 milliohms.
In the event of bonding test failure, remove the rack and verify that the
countersunk areas around the holes, in the rack that are used to attach
the rack, are free of corrosion or any other debris. Clean the
countersunk areas using an approved solvent per Eurocopter Standard
Practices Manual (MTC 20-02-07-401). Reattach the rack to the rails in
the panel or pedestal. Re-verify 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.
4. Reinstall all backplate assemblies and reinstall the GTN in the mounting
rack.
The GTN unit, GMA 35 (if installed), switches, and wiring harnesses should
190-01007-K8 Rev.2
Instructions for Continued Airworthiness GTN 6XX/7XX - Eurocopter AS350B2/B3
Page 4 of 21
ITEM
INTERVAL
TO BE PERFORMED IN
ALIGNMENT WITH THE
DESCRIPTION/PROCEDURE
be inspected to ensure continued integrity of the installation in alignment
with Eurocopter Master Servicing Manual (MSM 05-22-00).
EUROCOPTER AS350
600 FLIGHT HOUR
Visually inspect the following to ensure continued installation integrity 1. Inspect the GTN unit(s) and GMA 35 for security of attachment,
24 MONTHS, WHICHEVER
including visual inspection of mounting racks and rotorcraft instrument
COMES FIRST.
panel or avionics console supporting structure to which the racks attach.
Verify the countersunk fastener heads are in full contact with unit
mounting rack holes. If a GTN Navigator is installed in the center
console, inspect the condition of the console and unit install rack around
the rivets. Repair damage as necessary in accordance with MTC 20-0306-407. Verify countersunk rivet head is fully seated into the unit
mounting rack fastener hole with no slack. For GTNs installed in the
instrument panel, re-torque fasteners 12 to 15 in-lbs if required. Verify
the electrical bond using the procedure in item 4 above.
2. Inspect for signs of corrosion, and if corrosion is found, treat
accordance with Section 04, Cleaning, Protective Treatment, and
Painting of Eurocopter Standard Practices Manual MTC 20-04.
3. Inspect all switches, knobs, and buttons for damage. If knobs or
buttons are missing or damaged, return the unit to Garmin for repair.
4. Inspect placards and switch labels. Ensure that they are legible and
properly adhered. Replace any damaged labels as necessary.
5. Inspect condition of wiring, shield terminations, routing, and
attachment/clamping. Correct any issues identified by replacing
damaged wiring and re-attaching as necessary.
6. Check the fan intake slots on the sides and bottom of the GTN unit’s
bezel for dust, dirt, or obstructions. Clean as needed
INSPECTION OR EVERY
Table 2. Maintenance Intervals for Antennas Installed Under this STC
ITEM
INTERVAL
1. ELECTRICAL BONDING
CHECK, GPS ANTENNAS
(ONLY IF ANTENNA IS
INSTALLED BY THIS STC)
DESCRIPTION/PROCEDURE
An electrical bonding test must be performed on antennas installed by this
STC.
1. Gain access to the antenna installation.
2. Disconnect coaxial cable(s) from the antenna connector(s)
190-01007-K8 Rev.2
Instructions for Continued Airworthiness GTN 6XX/7XX - Eurocopter AS350B2/B3
Page 5 of 21
ITEM
INTERVAL
BOND CHECK TO BE
PERFORMED EVERY 10
YEARS OR 1800 FLIGHT
HOURS, WHICHEVER
COMES FIRST.
THE CHECK IS TO BE
PERFORMED DURING THE
AS350 600 FLIGHT
HOUR/24 MONTH
INSPECTION
DESCRIPTION/PROCEDURE
3. Measure the resistance between the antenna connector and a nearby
exposed portion of conductive aircraft structure (example: exposed
rivet)
4. Verify the resistance is equal to or less than 10 milliohms per Eurocopter
Standard Practices Manual (MTM 20-02-07).
5. 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
inspect antenna bonding braids. If required, prep the area underneath
the washer on the aluminum ground plane or prep bonding braid
terminals at their connections to the airframe in accordance with
Eurocopter Standard Practices Manual (MTC 20-02-07-401).
6. Re-install using unit replacement procedures in the GTN 6XX/7XX PART
27 AML STC SYSTEM MAINTENANCE MANUAL Section 5. Any reworked
antenna installation shall have a resistance of less than or equal to 2.5
milliohms.
2. VISUAL INSPECTION, GPS Visual inspection on the antenna
ANTENNAS
1. Clean the antenna with water and mild soap.
(ONLY IF ANTENNA IS
2. Verify there are no cracks on the antenna and around attachment
INSTALLED BY THIS STC)
fasteners.
3. Verify that all sealing fillets around the antenna are in good condition.
TO BE PERFORMED IN
4. If the antenna is broken, cracked, or dented it must be replaced.
ALIGNMENT WITH THE
5. In the event attachment is not secure, re-attach antenna and complete
EUROCOPTER AS350
the Electrical Bonding Test.
600 FLIGHT HOUR
6. In the event the antenna seal shows signs of damage, re-seal the
INSPECTION OR EVERY
antenna and gasket by running a bead of the MIL-A-46146 Non24 MONTHS, WHICHEVER
Corrosive RTV Silicone Adhesive-Sealant along the edge of the antenna
COMES FIRST.
where it meets the exterior aircraft skin. MIL-S-8802 Sealing Compound,
Temperature-Resistant, High Adhesion can be used as an alternative.
PERFORM VISUAL
Use caution to insure that the antenna connectors are not contaminated
INSPECTION IN EVENT OF
with sealant.
SUSPECTED LIGHTING
7. Visually inspect the rotorcraft exterior skin around installed antenna STRIKE.
(a) Clean the exterior of the aircraft skin within a 10 inch radius of the
antenna with water and mild soap.
(b) Inspect aircraft skin around the antenna footprint to verify there are
no cracks and aircraft skin is not deformed.
(c) If the aircraft skin is cracked, or deformed, the internal structure
must also be inspected for degradation in the local area. Refer to
Section 6-1 Check Of The Skin Of The Upper And Lower Vertical
Stabilizer of rotorcraft approved Maintenance Manual AMM-55-20-00
for detailed inspection instructions and acceptable repair methods.
8. Verify that antenna fasteners are not loose.
190-01007-K8 Rev.2
Instructions for Continued Airworthiness GTN 6XX/7XX - Eurocopter AS350B2/B3
Page 6 of 21
2.6 Troubleshooting Information
If error indications are displayed on the GTN 6XX or 7XX, consult Section 4, Troubleshooting of the GTN
6XX/7XX PART 27 AML STC SYSTEM MAINTENANCE MANUAL. Refer to the GTN System Configuration
and Checkout Log retained in the aircraft permanent records for a list of the interfaced equipment and
system configuration data.
2.7 Removal and Replacement Information
When replacing a GTN unit or GTN configuration module, the configuration information for the
replacement unit must be set based on approved installation data to ensure proper configuration for this
STC. In particular, per FAA direction, the setting for Airspace Labels must be configured as “Disable”.
For removal and replacement instructions, refer to the GTN 6XX/7XX PART 27 AML STC SYSTEM
MAINTENANCE MANUAL Section 5, Equipment Removal and Replacement.
190-01007-K8 Rev.2
Instructions for Continued Airworthiness GTN 6XX/7XX - Eurocopter AS350B2/B3
Page 7 of 21
2.8 Equipment Location and Access
2.8.1 GTN STC Installation Equipment Layout
Figure 1. Equipment Location in GTN STC
190-01007-K8 Rev.2
Instructions for Continued Airworthiness GTN 6XX/7XX - Eurocopter AS350B2/B3
Page 8 of 21
2.8.2 GTN Navigator Installation
Typical installation of GTN navigator in AS350 is shown in Figure 2 and Figure 3 with corresponding bill of
material shown in Table 3.
Table 3. Bill of Materials for GTN Navigators and Optional GMA Audio Panel
1
1
1
1
1
1
1
1
1
1
1
1
1
-
1
-
1
-
1
1
1
-
21
20
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
011-02302-00
011-02300-00
011-02645-00
011-02299-00
011-02326-02
011-02326-00
011-02325-02
011-02325-01
011-02325-00
011-02246-02
1
011-02246-00
1
011-02245-02
1
011-02245-01
011-02245-00
1
115-01294-A0
1
1
115-01293-A0
011-02282-A0
011-02282-50
011-02282-00
1
4
011-02281-00
1
3
011-02256-A0
011-02256-50
011-02256-00
1
2
011-02255-00
1
1
011-02254-00
750 725 650 635 625 ITEM PART
NO. NUMBER
QTY. PER GTN MODEL
CONNECTOR KIT, GMA 35 AUDIO PANEL
BACKPLATE SUB-ASSEMBLY, GMA 35 AUDIO PANEL
INSTALL RACK KIT, GMA 35 AUDIO PANEL
GMA 35 AUDIO PANEL, REMOTE
CONNECTOR KIT, GTN 750 NAVIGATOR
CONNECTOR KIT, GTN 725 NAVIGATOR
CONNECTOR KIT, GTN 650 NAVIGATOR
CONNECTOR KIT, GTN 635 NAVIGATOR
CONNECTOR KIT, GTN 625 NAVIGATOR
BACKPLATE SUB-ASSEMBLY, GTN 750 NAVIGATOR
BACKPLATE SUB-ASSEMBLY, GTN 725 NAVIGATOR
BACKPLATE SUB-ASSEMBLY, GTN 650 NAVIGATOR
BACKPLATE SUB-ASSEMBLY, GTN 635 NAVIGATOR
BACKPLATE SUB-ASSEMBLY, GTN 625 NAVIGATOR
MOUNTING RACK, GTN 7XX SERIES NAVIAGATOR
MOUNTING RACK, GTN 6XX SERIES NAVIAGATOR
GTN 750 TOUCH SCREEN NAVIGATOR, NVIS
GTN 750 TOUCH SCREEN NAVIGATOR, GRAY BEZEL
GTN 750 TOUCH SCREEN NAVIGATOR
GTN 725 TOUCH SCREEN NAVIGATOR
GTN 650 TOUCH SCREEN NAVIGATOR, NVIS
GTN 650 TOUCH SCREEN NAVIGATOR, GRAY BEZEL
GTN 650 TOUCH SCREEN NAVIGATOR
GTN 635 TOUCH SCREEN NAVIGATOR
GTN 625 TOUCH SCREEN NAVIGATOR
DESCRIPTION
190-01007-K8 Rev.2
Instructions for Continued Airworthiness GTN 6XX/7XX - Eurocopter AS350B2/B3
OR
OR
OR
OR
OR
OR
Page 9 of 21
Figure 2. Typical GTN / GMA35 Installation in Eurocopter AS350 with Geneva Console
190-01007-K8 Rev.2
Instructions for Continued Airworthiness GTN 6XX/7XX - Eurocopter AS350B2/B3
Page 10 of 21
Figure 3. Typical GTN / GMA35 Installation in Eurocopter AS350 with Factory Console
190-01007-K8 Rev.2
Instructions for Continued Airworthiness GTN 6XX/7XX - Eurocopter AS350B2/B3
Page 11 of 21
2.8.3 Circuit Breaker and GPS Switch Installation
Required circuit breaker labels are shown in Table 4.
Table 4. GTN Circuit Breaker Labels
LRU
GMA 35
GTN 750
POWER INPUT
ROTORCRAFT POWER ON CONNECTOR P3502
ROTORCRAFT POWER ON CONNECTOR P1001
ROTORCRAFT POWER ON CONNECTOR P1004
ROTORCRAFT POWER ON CONNECTOR P1003
GTN 725
GTN 650
ROTORCRAFT POWER ON CONNECTOR P1001
ROTORCRAFT POWER ON CONNECTOR P1001
ROTORCRAFT POWER ON CONNECTOR P1004
ROTORCRAFT POWER ON CONNECTOR P1003
ROTORCRAFT POWER ON CONNECTOR P1001
GTN 635
ROTORCRAFT POWER ON CONNECTOR P1003
GTN 625
ROTORCRAFT POWER ON CONNECTOR P1001
GTN INSTALLATION
SINGLE
DUAL1
Audio
GPS/NAV
GPS/NAV
GPS/NAV
COM 1
COM
COM 2
GPS 1
GPS
GPS 2
GPS/NAV
GPS/NAV
GPS/NAV
COM 1
COM
COM 2
GPS 1
GPS
GPS 2
COM 1
COM
COM 2
GPS 1
GPS
GPS 2
1
2
1
2
1. Dual installation labeling applies to GTN LRUs only
Typical installation of GTN circuit breakers, circuit breaker labels, and GPS on/off switch is shown in
Figure 4. Figure 6, Figure 7, and Figure 7 with corresponding bill of material shown in Table 5.
Table 5. Bill of Materials for Circuit Breaker and GPS Switch
6
2
6
6
2
8 MS35338-40
6
2
6
6
2
7 MS35214-23
13 13 13
6 M39029/57-354
1
1
1
5 44387-001
1
1
1
4 29709-001
1
1
49202-043
3
1
49202-042
1
1
1
2 4120-V110-3A
2
1
2
2
1
1 4120-V110-5A
750 725 650 635 625 ITEM PART
QTY. PER GTN MODEL NO. NUMBER
WASHER, LOCK-SPRING, HELICAL, REGULAR SERIES 0.112
SCREW, MACHINE, PAN HEAD, BRASS, 0.1380-32 UNC-2A
CONTACT, SOCKET, CRIMPED, MIL-DTL-38999 SERIES, 22-28 AWG
CONNECTOR MODULE
MOUNTING SLEEVE
SWITCH, 4-POLE, PUSH-BUTTON, CHROMALUX 389, GPS/COM 1
SWITCH, 4-POLE, PUSH-BUTTON, CHROMALUX 389, GPS 1
CIRCUIT BREAKER, MINIATURE, HIGH PERFORMANCE, 3 AMP
CIRCUIT BREAKER, MINIATURE, HIGH PERFORMANCE, 5 AMP
DESCRIPTION
190-01007-K8 Rev.2
Instructions for Continued Airworthiness GTN 6XX/7XX - Eurocopter AS350B2/B3
Page 12 of 21
Figure 4. Circuit Breaker and GPS Switch Installation in Geneva Console
190-01007-K8 Rev.2
Instructions for Continued Airworthiness GTN 6XX/7XX - Eurocopter AS350B2/B3
Page 13 of 21
Figure 5. Circuit Breaker Labels in Geneva Console
190-01007-K8 Rev.2
Instructions for Continued Airworthiness GTN 6XX/7XX - Eurocopter AS350B2/B3
Page 14 of 21
Figure 6. GPS Switch Installation in Eurocopter Console
190-01007-K8 Rev.2
Instructions for Continued Airworthiness GTN 6XX/7XX - Eurocopter AS350B2/B3
Page 15 of 21
Figure 7. Circuit Breaker Location and Labels in Eurocopter Console
190-01007-K8 Rev.2
Instructions for Continued Airworthiness GTN 6XX/7XX - Eurocopter AS350B2/B3
Page 16 of 21
2.8.4 Wire Routing
Routing of the GTN/GMA 35 wiring harness, including
power and switch connections is shown in Figure 8.
Coaxial wire routing may differ slightly from the depicted
since the GTNs may be interfaced with existing GPS
antennas. Refer to the aircraft wire routing worksheets
and equipment location forms that were filled out during
initial GTN/GMA 35 installation for additional details.
GTN/GMA 35 installation racks, backplates with
connectors, and wiring harnesses may be accessed by
either removing the GTN LRUs as specified in GTN
6XX/7XX PART 27 AML STC SYSTEM MAINTENANCE
MANUAL Section 5, Equipment Removal and
Replacement or by removing the side panel of the
Eurocopter AS350 console.
Figure 8. GTN/GMA 35 Wire Routing in
Eurocopter AS350
190-01007-K8 Rev.2
Instructions for Continued Airworthiness GTN 6XX/7XX - Eurocopter AS350B2/B3
Page 17 of 21
2.8.5 Weight and Balance
The location of GTN navigator and optional GMA 35 audio panel in reference to rotorcraft fuselage station
(FS) and butt line (BL) is shown in Figure 9 with corresponding lateral and longitudinal arms and
moments detailed in Table 6.
Figure 9. GTN and GMA 35 FS and BL Location
Table 6. Typical Weight and Balance of GTN and GMA 35 Installation
ITEM DESCRIPTION
1
2
3
4
5
6
GTN 625 NAVIGATOR
GTN 635 NAVIGATOR
GTN 650 NAVIGATOR
GTN 725 NAVIGATOR
GTN 750 NAVIGATOR
GMA 35 REMOTE MOUNT AUDIO PANEL
PART NUMBER
011-02254-00
011-02255-00
011-02256-00
011-02281-00
011-02282-00
011-02299-00
LONGITUDINAL
LATERAL
WEIGHT
[LB]
ARM [IN] MOMENT ARM [IN] MOMENT
6.00
33.28
199.68
0.00
0.00
6.80
33.28
226.3
0.00
0.00
7.60
33.28
252.93
0.00
0.00
8.60
43.81
376.77
0.00
0.00
10.20
43.81
446.86
0.00
0.00
2.20
41.07
90.35
0.00
0.00
2.9 Diagrams
Aircraft specific LRU locations and wire routing diagram forms are contained in Appendix A of this
document. Completed forms are to be retained with the aircraft permanent records.
Point-to-point wiring diagrams for the GTN, GMA 35, and interfaced equipment included with the aircraft
permanent records.
GTN and GMA 35 locations are described in Section 2.8 of this document.
190-01007-K8 Rev.2
Instructions for Continued Airworthiness GTN 6XX/7XX - Eurocopter AS350B2/B3
Page 18 of 21
2.10 Special Inspection Requirements
If an antenna is installed under this STC, an antenna visual inspection must be performed if there is a
suspected lighting strike on the aircraft. In the event of a suspected or actual lightning strike to the
aircraft, the GPS antenna(s) and its associated installation shall be inspected.
If the antenna was struck by lightning then the antenna and the surrounding installation shall be
inspected to ensure that there is no structural damage around the areas where lightning may have
struck. See Table 2 for inspection criteria.
Execute the system checkout procedure for the GPS/WAAS and/or XM system using the antenna, to
ensure the system(s) are operating correctly.
No action is required for hard landing inspections.
2.11 Application of Protective Treatments
None. N/A.
2.12 Data Relative to Structural Fasteners
Refer to Garmin P/N 190-01007-B1, GTN 6XX/7XX PART 27 AML STC SYSTEM MAINTENANCE MANUAL
Section 5 for fastener information.
2.13 Special Tools
A milliohm meter with an accuracy of +/- 0.1 milliohms ohms (or better) is required to measure the
electrical bonding between the GTN/GMA system components and aircraft ground.
2.14 Additional Instructions
None. N/A
2.15 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 GTN system. If any LRU indicates an internal failure, the unit may be
removed and replaced (Refer to Section 5 of the GTN 6XX/7XX PART 27 AML STC SYSTEM
MAINTENANCE MANUAL for Removal and Reinstallation instructions). See GTN 6XX/7XX PART 27 AML
STC SYSTEM MAINTENANCE MANUAL, Section 4 for Troubleshooting information.
2.16 ICA Revision and Distribution
To revise this ICA, Garmin will follow the Garmin ODA Procedures Manual SOP-0055/ACP-0016 for
Instructions for Continued Airworthiness. The latest revision of this ICA document is available on the
Garmin website (www.flyGarmin.com). To Access Aviation Manuals, select the ‘Support’ tab and then
select ‘Manuals’. You may also contact Garmin General Aviation Product Support at 866-739-5687 (US toll
free) 913-397-8200 or avionics@garmin.com. A Garmin Service Bulletin describing ICA revision will be
sent to Garmin dealers if a revision is determined to be significant.
2.17 Assistance
Flight Standards Inspectors or the certificate holder’s PMI have the required resources to respond to
questions regarding this ICA. In addition, the customer may contact Garmin with questions regarding this
equipment and its installation. Garmin Customer Support may be contacted during normal business hours
via telephone 913-397-8200 or from the Garmin web site at www.flyGarmin.com.
2.18 Implementation and Record Keeping
Modification of an aircraft by this Supplemental Type Certificate obligates the aircraft operator to include
the maintenance information provided by this document in the operator’s aircraft maintenance manual
and/or the operator’s rotorcraft scheduled maintenance program.
190-01007-K8 Rev.2
Instructions for Continued Airworthiness GTN 6XX/7XX - Eurocopter AS350B2/B3
Page 19 of 21
4. APPENDIX A - EQUIPMENT LOCATIONS AND WIRE ROUTING
The following diagram must be completed to depict the location of all LRUs and antenna(s) along with the wire routing for the GTN 6XX/7XX and GMA 35
throughout the aircraft structure for the Eurocopter AS350 rotorcraft. All harnesses fabricated as part of this STC should be included in this diagram.
190-01007-K8 Rev.2
Instructions for Continued Airworthiness GTN 6XX/7XX - Eurocopter AS350B2/B3
Page 21 of 21
Was this manual useful for you? yes no
Thank you for your participation!

* Your assessment is very important for improving the work of artificial intelligence, which forms the content of this project

Download PDF

advertising