Garmin GTX 335 Owner's manual

GTX 335
Garmin
Brand
Garmin
Model
GTX 335
Type
Owner's manual

This manual is also suitable for

Garmin International
1200 E. 151
st
Street
Olathe, KS 66062
ROTORCRAFT FLIGHT MANUAL SUPPLEMENT
GTX 3X5 PART 27 AML
190-00734-22 Rev. 2 Page 2 of 20
LOG OF REVISIONS
Page
Revision
Number
Number
Description
FAA Approved
1
All
Complete Supplement
Michael Warren
ODA STC Unit
Administrator
Garmin International, Inc.
ODA-240087-CE
2
5, 12,
16, 17,
18, 20
Revised sections 1.1,
2.4, 2.6, 7, 7.2, 7.3,
7.4, and 7.8
See cover page.
Garmin International
1200 E. 151
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Street
Olathe, KS 66062
ROTORCRAFT FLIGHT MANUAL SUPPLEMENT
GTX 3X5 PART 27 AML
190-00734-22 Rev. 2 Page 3 of 20
FAA APPROVED
Table of Contents
SECTION PAGE
Section 1. GENERAL 4
1.1 GTX 3X5 4
1.2 Capabilities 6
1.3 Definitions 7
1.4 Installation Configuration 8
Section 2. LIMITATIONS 11
2.1 Minimum Equipment 11
2.2 ADS-B Out 11
2.3 TIS-A Traffic Display 11
2.4 Applicable System Software 12
2.5 Pressure Altitude Broadcast Inhibit (PABI) 12
2.6 Traffic Display and Alerting 12
2.7 Datalinked Weather Display (GTX 345 Only) 12
2.8 Portable Electronic Devices 13
Section 3. EMERGENCY PROCEDURES 14
3.1 Emergency Procedures 14
3.2 Abnormal Procedures 14
Section 4. NORMAL PROCEDURES 15
4.1 Before Takeoff 15
4.2 VISUAL/AURAL TRAFFIC ALERT 15
Section 5. PERFORMANCE 15
Section 6. WEIGHT AND BALANCE 15
Section 7. SYSTEM DESCRIPTION 16
7.1 Transmitted Air Ground Status 16
7.2 GTX TIS-A Behavior (GTX 335 Only) 16
7.3 Traffic Sources and Alerting 17
7.4 Rotorcraft with No Heading Source 17
7.5 On Scene Mode (OSM) (GTX 345 Only) 18
7.6 Interfaced Active Traffic System (Optional, GTX 345 Only) 18
7.7 Power 19
7.8 External Switches 20
Garmin International
1200 E. 151
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ROTORCRAFT FLIGHT MANUAL SUPPLEMENT
GTX 3X5 PART 27 AML
190-00734-22 Rev. 2 Page 4 of 20
FAA APPROVED
Section 1. GENERAL
1.1 GTX 3X5
The Garmin GTX 3X5 family consists of the GTX 335, 335R, 345, and 345R
transponders. The capabilities for each of these transponders is summarized in
Table 1.
Function
GTX
335
GTX
335 w
GPS
GTX
335R
GTX
335R
w
GPS
GTX
345
GTX
345 w
GPS
GTX
345R
GTX
345R
w
GPS
Panel
mount
x
x
x
x
Remote
mount
x
x
x
x
Mode S
x
x
x
x
x
x
x
x
ADS-B
(out) per
14 CFR
91.227.
x
x
x
x
x
x
x
x
ADS-B
Traffic
x
x
x
x
FIS-B
x
x
x
x
Internal
GPS
x
x
x
x
Bluetooth
x
x
x
x
Table 1 – GTX 3X5 Unit Configurations
Garmin International
1200 E. 151
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ROTORCRAFT FLIGHT MANUAL SUPPLEMENT
GTX 3X5 PART 27 AML
190-00734-22 Rev. 2 Page 5 of 20
FAA APPROVED
Interfaces to the GTX 3X5 are shown in Figure 1.
TAS/TCAS I
Traffic Sensor
ADS-B Traffic
FIS-B Display
Bluetooth
Device
GTX 3X5
GPS Antenna
External GPS
Source
Audio Panel
Bottom Antenna
GTX 3X5 with GPS only
OR
GTX 335R/345R
Control
Power/Ground
Altitude Source
Heading Source
Air Data Source
Secondary GPS
Radio Altitude
Source
Optional Interfaces Required Interfaces
WOW Switch
Bluetooth
GTX 345 / 345R only
External Traffic
Annunciator
For NO display Install
Battery
Keep Alive input from battery
source for internal GPS only
Internal GPS Source
Flight
Stream
OR
GTX 335 / 335R only
GTX 345 / 345R only
Audio Panel
Figure 1 – GTX 3X5 Interface Summary
The GTX 3X5 performs the following functions:
• Transmission of ADS-B out data on 1090 extended squitter (1090ES)
(1090 MHz)
o Integration of data from internal and external sources to
transmit the following data per 14 CFR 91.227:
▪ GPS Position, Altitude, and Position Integrity
▪ Ground Track and/or Heading, Ground Speed, and
Velocity Integrity
▪ Air/Ground Status
▪ Flight ID, Call Sign, ICAO Registration Number
▪ Capability and Status Information
▪ Transponder Squawk Code, IDENT, and Emergency
Status
o Pressure Altitude Broadcast Inhibit
Garmin International
1200 E. 151
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ROTORCRAFT FLIGHT MANUAL SUPPLEMENT
GTX 3X5 PART 27 AML
190-00734-22 Rev. 2 Page 6 of 20
FAA APPROVED
The GTX 335 performs the following additional functions in addition to those
listed for the GTX 3X5:
• Reception of TIS-A traffic data from a ground station
• Provide TIS-A traffic information and alerting to the pilot via an optional
interfaced display and audio output.
The GTX 345 performs the following additional functions in addition to those
listed for the GTX 3X5:
• Reception of ADS-B In data on 1090 MHz
o ADS-B (Data directly from another transmitting aircraft)
o ADS-R (Rebroadcast of ADS-B data from a ground station)
• Reception of ADS-B In data on UAT (978 MHz)
o ADS-B (Data directly from another transmitting aircraft)
o ADS-R (Rebroadcast of ADS-B data from a ground station)
o TIS-B (Broadcast of secondary surveillance radar) (SSR)
derived traffic information from a ground station.
o FIS-B (Broadcast of aviation data from a ground station)
• Provide ADS-B traffic information and alerting to the pilot via an
optional interfaced display
o Correlation and consolidation of traffic data from multiple
traffic sources
o Aural and visual traffic alerting
• Provide FIS-B data to the pilot via an optional interfaced display
o Graphical and textual weather products
▪ NEXRAD
▪ PIREPs
▪ AIRMET/SIGMETs
▪ METARs
▪ TAFs
▪ Winds Aloft
o Aviation Data
▪ TFRs
▪ NOTAMs
1.2 Capabilities
The Garmin GTX 3X5 as installed in this aircraft has been shown to meet the
equipment requirements of 14 CFR § 91.227 when operating in accordance with
sections 2.1 and 2.2 of this supplement.
Garmin International
1200 E. 151
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ROTORCRAFT FLIGHT MANUAL SUPPLEMENT
GTX 3X5 PART 27 AML
190-00734-22 Rev. 2 Page 7 of 20
FAA APPROVED
1.3 Definitions
The following terminology is used within this document:
ADS-B: Automatic Dependent Surveillance Broadcast
ADS-R: Automatic Dependent Surveillance Re-Broadcast
CFR: Code of Federal Regulations
ES: Extended Squitter
GTX: Garmin Transponder
ICAO: International Civil Aviation Organization
SBAS: Satellite-Based Augmentation System
SW: Software
TAS: Traffic Advisory System
TCAS: Traffic Collision Avoidance System
TIS: Traffic Information Service
Garmin International
1200 E. 151
st
Street
Olathe, KS 66062
ROTORCRAFT FLIGHT MANUAL SUPPLEMENT
GTX 3X5 PART 27 AML
190-00734-22 Rev. 2 Page 8 of 20
FAA APPROVED
1.4 Installation Configuration
This aircraft is equipped with a GTX 3X5 with the following interfaces/
features:
1.4.1 Equipment Installed:
Transponder #1
GTX 335
GTX 335R
GTX 345
GTX 345R
Transponder #2 (if installed)
GTX 335
GTX 335R
GTX 345
GTX 345R
Garmin International
1200 E. 151
st
Street
Olathe, KS 66062
ROTORCRAFT FLIGHT MANUAL SUPPLEMENT
GTX 3X5 PART 27 AML
190-00734-22 Rev. 2 Page 9 of 20
FAA APPROVED
1.4.2 Interfaced Equipment for Transponder #1
GPS/SBAS Position Source(s)
GPS #1
GPS #2 (if installed)
Internal
Internal
GTN 6XX/7XX Series
GTN 6XX/7XX Series
GNS 400W/500W Series
GNS 400W/500W Series
Pressure Altitude Source:
Pressure Altitude Source #1
_____________________
Garmin Altitude Encoder
Pressure Altitude Source #2
(if installed)
_____________________
Garmin Altitude Encoder
Interfaced Remote Control Display
GTN 6XX/7XX
None
Interfaced Active Traffic System:
None
TCAD
TAS/TCAS
Interfaced Heading Source(s):
Yes
No
Height Above Terrain/Airport Data Source(s) (provides aural alerting
suppression in airport environment):
Not Available (traffic aural on/off switch is installed)
Available (Radar Altimeter or GPS Navigator)
Garmin International
1200 E. 151
st
Street
Olathe, KS 66062
ROTORCRAFT FLIGHT MANUAL SUPPLEMENT
GTX 3X5 PART 27 AML
190-00734-22 Rev. 2 Page 10 of 20
FAA APPROVED
1.4.3 Interfaced Equipment for Transponder #2
GPS/SBAS Position Source(s)
GPS #1
GPS #2 (if installed)
Internal
Internal
GTN 6XX/7XX Series
GTN 6XX/7XX Series
GNS 400W/500W Series
GNS 400W/500W Series
Pressure Altitude Source:
Pressure Altitude Source #1
_____________________
Garmin Altitude Encoder
Pressure Altitude Source #2
(if installed)
_____________________
Garmin Altitude Encoder
Interfaced Remote Control Display
GTN 6XX/7XX
None
Interfaced Active Traffic System:
None
TCAD
TAS/TCAS
Interfaced Heading Source(s):
Yes
No
Height Above Terrain/Airport Data Source(s) (provides aural alerting
suppression in airport environment):
Not Available (traffic aural on/off switch is installed)
Available (Radar Altimeter or GPS Navigator)
Garmin International
1200 E. 151
st
Street
Olathe, KS 66062
ROTORCRAFT FLIGHT MANUAL SUPPLEMENT
GTX 3X5 PART 27 AML
190-00734-22 Rev. 2 Page 11 of 20
FAA APPROVED
Section 2. LIMITATIONS
2.1 Minimum Equipment
The GTX 3X5 must have the following system interfaces fully functional in
order to be compliant with the requirements for 14 CFR 91.227 ADS-B Out
operations:
Interfaced Equipment
Number Installed
Number
Required
Barometric Pressure Altitude
Source
1 or more
1
GPS SBAS Position Source
1 or more
1
Remote Control Display (for GTX
335R or GTX 345R only)
1 or more
1
Table 2 – Required Equipment
2.2 ADS-B Out
The GTX 3X5 only complies with 14 CFR 91.227 for ADS-B Out when all
required functions are operational as indicated by the absence of any ADS-B
Out (1090ES) transmit failure message on the remote control display interface
or GTX 3X5 display.
2.3 TIS-A Traffic Display
Use of the TIS-A traffic display on an interfacing display from a GTX 335 is not
permitted with an interfacing display configured for a navigation angle of
“user”.
Use of the TIS-A traffic display on an interfacing display from a GTX 335 is not
permitted when in a hover.
Garmin International
1200 E. 151
st
Street
Olathe, KS 66062
ROTORCRAFT FLIGHT MANUAL SUPPLEMENT
GTX 3X5 PART 27 AML
190-00734-22 Rev. 2 Page 12 of 20
FAA APPROVED
2.4 Applicable System Software
This supplement is applicable to the software version shown in Table 3.
The Main GTX software version is displayed on the splash screen during start
up for the GTX 3X5 panel mounted units, and the External LRU or System page
on the interfaced remote control display for remotely mounted GTX
transponders.
Software Item
Software Version
(or later FAA Approved versions
for this STC)
GTX 3X5 Main SW Version
2.54
GTX 3X5 ADS-B SW Version
3.13
GTX 3X5 GPS SW Version
7.0
Table 3 - Software Versions
2.5 Pressure Altitude Broadcast Inhibit (PABI)
While operating within airspace requiring an ADS-B Out compliant transmitter
per 14 CFR 91.225, Pressure Altitude Broadcast Inhibit shall only be enabled
when requested by Air Traffic Control. PABI is enabled by selecting the GTX to
ON mode.
2.6 Traffic Display and Alerting
Traffic display and alerting is an aid to visual acquisition and may not be used as
the sole basis for rotorcraft maneuvering.
When operating without a heading source, during significant crab angles such as
in rearward or sideward flight above 15 knots, the traffic display shall not be
used. See Section 7.4 for more details on rotorcraft with no heading source.
2.7 Datalinked Weather Display (GTX 345 Only)
Do not use datalink weather information for maneuvering in, near, or around
areas of hazardous weather. Information provided by datalink weather products
may not accurately depict current weather conditions.
Do not use the indicated datalink weather product age to determine the age of
the weather information shown by the datalink weather product. Due to time
delays inherent in gathering and processing weather data for datalink
transmission, the weather information shown by the datalink weather product
may be significantly older than the indicated weather product age.
Garmin International
1200 E. 151
st
Street
Olathe, KS 66062
ROTORCRAFT FLIGHT MANUAL SUPPLEMENT
GTX 3X5 PART 27 AML
190-00734-22 Rev. 2 Page 13 of 20
FAA APPROVED
Do not rely solely upon datalink services to provide Temporary Flight
Restriction (TFR) or Notice to Airmen (NOTAM) information.
2.8 Portable Electronic Devices
This STC does not relieve the operator from complying with the requirements of
91.23 or any other operational regulation regarding portable electronic devices.
Garmin International
1200 E. 151
st
Street
Olathe, KS 66062
ROTORCRAFT FLIGHT MANUAL SUPPLEMENT
GTX 3X5 PART 27 AML
190-00734-22 Rev. 2 Page 14 of 20
FAA APPROVED
Section 3. EMERGENCY PROCEDURES
3.1 Emergency Procedures
No Change.
3.2 Abnormal Procedures
3.2.1 LOSS OF GPS/SBAS POSITION DATA
When the GPS/SBAS receiver is inoperative or GPS position information is not
available or is invalid, the GTX will no longer be transmitting ADS-B Out data
to comply with 91.227.
For GTX 3X5 installations:
“NO 1090ES TX” annunciator illuminated:
Interfaced GPS position sources ........................... VERIFY VALID POSITION
GTX 3X5R installations:
Reference Display Device documentation for applicable annunciation:
Interfaced GPS position sources ........................... VERIFY VALID POSITION
Garmin International
1200 E. 151
st
Street
Olathe, KS 66062
ROTORCRAFT FLIGHT MANUAL SUPPLEMENT
GTX 3X5 PART 27 AML
190-00734-22 Rev. 2 Page 15 of 20
FAA APPROVED
Section 4. NORMAL PROCEDURES
The procedures described below are specific only to the panel mounted GTX
3X5 transponders. Cockpit Reference Guides and Pilot Guides for interfaced
remote control displays will provide additional operating information specific to
the displays or other traffic systems.
ADS-B Out functionality resides within the GTX transponders thereby
providing a single point of entry for Mode 3/A code, Flight ID, IDENT
functionality and activating or deactivating emergency status for both
transponder and ADS-B Out functions. Details on performing these procedures
are located in the GTX 3X5 Series Transponder Pilot’s Guide.
4.1 Before Takeoff
GTX Mode ..................................................................................... VERIFY ALT
TRAFFIC AURALS ON/OFF Switch (if installed) .................... CONSIDERED
NO 1090ES TX....................................................................... EXTINGUISHED
NOTE
The NO 1090ES TX Annunciation (or associated display
annunciations) must be EXTINGUISHED for the system to
meet the requirements specified in 14 CFR 91.227. This
system must be operational in certain US airspaces after
January 1, 2020 as specified by 14 CFR 91.225. Requirements
outside of the US vary based on local regulations.
4.2 VISUAL/AURAL TRAFFIC ALERT
Traffic Alert Annunciation and Aural
Traffic……………….………………………….…….VISUALLY ACQUIRE
Section 5. PERFORMANCE
No change.
Section 6. WEIGHT AND BALANCE
See current weight and balance data.
Garmin International
1200 E. 151
st
Street
Olathe, KS 66062
ROTORCRAFT FLIGHT MANUAL SUPPLEMENT
GTX 3X5 PART 27 AML
190-00734-22 Rev. 2 Page 16 of 20
Section 7. SYSTEM DESCRIPTION
The Garmin GTX 3X5 Pilot’s Guides, part numbers, and revisions listed below
contain additional information regarding GTX system description, control, and
function.
Title
Part Number
Revision
GTX 3X5 Pilot’s Guide
190-01499-00
Rev. F (or later)
Table 4 – GTX Pilot Guides
Pilot’s Guides for interfaced displays, part numbers and revisions listed below,
provide additional operating information for the GTX 3X5R.
Title
Part Number
Revision
Garmin GTN 725/750
Pilot’s Guide
190-01007-03
Rev. M (or later)
Garmin GTN 625/635/650
Pilot’s Guide
190-01004-03
Rev. K (or later)
Garmin GNS 400W Series
Pilot’s Guide
190-00356-00
Rev. K (or later)
Garmin GNS 500W Series
Pilot’s Guide
190-00357-00
Rev. K (or later)
Garmin G500/G600 Pilot’s
Guide
190-00601-02
Rev. H (or later)
Table 5 – Interface Pilot Guides
7.1 Transmitted Air Ground Status
The ADS-B OUT message includes the air/ground status of the rotorcraft.
Rotorcraft which do not have a Radar Altimeter OR GNS/ GTN display
interfaced to the GTX will transmit “in air” any time the collective is raised.
Rotorcraft which have a Radar Altimeter OR GNS/ GTN display interfaced to
the GTX will transmit “in air” any time the height above the surface is more
than 25 feet or groundspeed is in excess of 15 knots.
7.2 GTX TIS-A Behavior (GTX 335 Only)
The TIS-A Standby/Operate controls for GTX 335 units only function when the
aircraft’s air/ground state is “in air”.
Garmin International
1200 E. 151
st
Street
Olathe, KS 66062
ROTORCRAFT FLIGHT MANUAL SUPPLEMENT
GTX 3X5 PART 27 AML
190-00734-22 Rev. 2 Page 17 of 20
7.3 Traffic Sources and Alerting
The GTX 345 is capable of receiving ADS-B, ADS-R, TIS-B, and
TAS/TCAS/TCAD traffic reports. Traffic data from these various sources is
used to track traffic around the rotorcraft and provide display and alerts to the
flight crew to aid in visual acquisition and avoidance. The GTX 335 is capable
of receiving TIS-A traffic only.
Traffic alerting is provided via a visual annunciator and audio callouts.
Rotorcraft which have a Radar Altimeter OR GNS/ GTN display interfaced to
the GTX will truncate traffic aural alerts to not include bearing, distance, and
relative altitude information when less than 200 ft above the surface.
Additionally, the GTX will reduce the protected volume around these rotorcraft
when operating below 200 ft above the surface and less than 60 kts groundspeed
to minimize nuisance alerts in the airport area while still providing traffic alerts
on other eligible ADS-B OUT equipped aircraft.
NOTE
Due to some aircraft not being required to equip for ADS-B
Out, as well as the nature of TIS and its service volumes, not
all traffic will be tracked by the GTX. This is much like an
active traffic system which does not track non-transponder
equipped aircraft. The flight crew must use “see and avoid”
procedures to visually acquire and avoid other aircraft. Do not
rely on your GTX as the sole means of detecting other aircraft.
7.4 Rotorcraft with No Heading Source
Rotorcraft which have an invalid heading source, or do not have a heading
source interfaced to the GTX are subject to the following traffic display
limitations:
• The traffic page on an interfaced display will be oriented to rotorcraft
TRACK, which may or may not align with rotorcraft heading.
• Due to the behavior described above, correlation of TCAS and ADS
traffic will be degraded or impossible. Above 15 knots groundspeed,
TCAS targets which cannot be correlated will be misaligned with ADS
targets by a value equal to the crab angle. When operating with
significant crab angles such as in rearward or sideward flight above 15
knots, the traffic display shall not be used (see Limitations, Section
2.6).
Garmin International
1200 E. 151
st
Street
Olathe, KS 66062
ROTORCRAFT FLIGHT MANUAL SUPPLEMENT
GTX 3X5 PART 27 AML
190-00734-22 Rev. 2 Page 18 of 20
• ADS-B traffic will not be available for display when groundspeed is
less than 15 knots and there is no valid heading. If TCAS is still in
operation, ADS will be shown as “N/A” (on some displays). If neither
system is available, the display will show “NO DISPLAY”.
7.5 On Scene Mode (OSM) (GTX 345 Only)
Rotorcraft which have a GTN display interfaced to the GTX have the ability to
use On Scene Mode (OSM). OSM reduces the protected volume around the
rotorcraft for alerts that would be produced by other ADS-B equipped rotorcraft.
OSM must turned ON and OFF by the pilot using the controls in the MENU of
the GTN’s traffic page and is intended to be used when intentionally operating
in close proximity to other helicopters for activities such as electronic news
gathering. OSM does not affect the protected volume for other airplanes or non-
ADS-B equipped rotorcraft.
7.6 Interfaced Active Traffic System (Optional, GTX 345 Only)
When an active traffic system is interfaced with a GTX 345, the GTX 345
receives traffic from the active traffic system and attempts to correlate – or
match – this traffic with ADS-B traffic the GTX 345 has received and is already
tracking. When a correlation is made, the active traffic system or ADS-B target
with the most accurate information is displayed to the flight crew. Any active
traffic system or ADS-B traffic that is not correlated will also be displayed for
the flight crew. The correlation of traffic by the GTX 345 ensures that only the
most accurate, and no duplicate, traffic targets are displayed for the flight crew’s
situational awareness.
In addition, the GTX 345 will use its air/ground status logic (see Section 7.1) to
automatically switch the active traffic system from Standby to Operate when
transitioning from ground to air, and from Operate to Standby when
transitioning from air to ground.
If the GTX 345 fails, then external traffic device data is no longer sent to the
display.
When interfaced to an active traffic system, traffic alerts are provided as follows:
• Alerts will be provided on the basis of data from the TCAS system for
targets tracked solely via TCAS AND targets that tracked via TCAS
and ADS-B which are correlated.
• Alerts will be provided by the GTX 345 for targets that are tracked
solely by ADS-B.
Garmin International
1200 E. 151
st
Street
Olathe, KS 66062
ROTORCRAFT FLIGHT MANUAL SUPPLEMENT
GTX 3X5 PART 27 AML
190-00734-22 Rev. 2 Page 19 of 20
The optional interfaced display’s Pilot’s Guides and supplements provide
additional information regarding the functionality and control of the traffic
device.
7.7 Power
Power to the GTX is provided through a circuit breaker labeled
“XPDR (1/2)” or “TXPNDR (1/2)”.
Garmin International
1200 E. 151
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Olathe, KS 66062
ROTORCRAFT FLIGHT MANUAL SUPPLEMENT
GTX 3X5 PART 27 AML
190-00734-22 Rev. 2 Page 20 of 20
7.8 External Switches
External switches may be installed in conjunction with the GTX. Table 6 lists
the switches and function they perform:
Switch Label
Function
IDENT
Activates the Ident feature of the GTX.
ALRT ACK
Acknowledges and mutes a currently playing
aural from the GTX. This includes traffic
aurals and aurals relating to the altitude
monitor and timer functions.
TRFC AURAL
Turns ON or OFF all aurals from the GTX.
This includes traffic aurals and aurals
relating to the altitude monitor and timer
functions.
XPDR SELECT (1/2)
Selects the #1 or #2 transponder for
operation in dual transponder installations.
Table 6 - External Switches
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Garmin GTX 335 Owner's manual

GTX 335
Garmin
Brand
Garmin
Model
GTX 335
Type
Owner's manual
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