Garmin Bell 407 GTN User manual

190-01007-J4 Rev. 1 RFMS, Bell 407 GTN GPS/SBAS System
Page 2 of 22 FAA APPROVED
LOG OF REVISIONS
Page
Revision
Number
Date
Number
Description
FAA Approved
1
10/23/2013
All
Complete Supplement
See page 1

RFMS, Bell 407 GTN GPS/SBAS System 190-01007-J4 Rev. 1
FAA APPROVED Page 3 of 22
Table of Contents
SECTION PAGE
GENERAL INFORMATION 5
Garmin GTN Navigators 5
Capabilities 7
Definitions 7
Section 1. LIMITATIONS 8
1.1 Kinds of Operation 8
1.2 Applicable System Software 8
1.3 SD Card 8
1.4 Ground Operations 8
1.5 Terrain Proximity Function (All Units) 8
1.6 HTAWS Function (Optional) 9
1.7 Datalinked Weather Display (Optional) 9
1.8 Traffic Display (Optional) 9
1.9 Flight Planner/Calculator Functions 9
1.10 Glove Use / Covered Fingers 10
1.11 Demo Mode 10
1.12 Telephone Audio 10
Section 2. NORMAL PROCEDURES 11
2.1 Unit Power On 11
2.2 Before Takeoff 11
2.3 Telephone & SMS Text (Optional) 11
2.4 HTAWS INHIBIT 11
Section 3. EMERGENCY / MALFUNCTION PROCEDURES 12
3.1 HTAWS 12
3.2 COM RADIO 12
3.3 AUDIO PANEL 13
3.4 OTHER 13
Section 4. PERFORMANCE 14
Section 5. WEIGHT AND BALANCE 14
SYSTEM DESCRIPTIONS 15
Pilot’s Guide 15
Power 15
Lighting Controls 15
GMA 35 Audio Panel (Optional) 15
TERRAIN PROXIMITY 16
HTAWS 16
Traffic System (Optional) 18
Datalinks (Optional) 19
Databases 19
External Switches 20
Map Orientation 20
Airspace Depiction and Alerts 21
Fuel Planning Page 21
Charts (Optional) 22

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Transponder Control (Optional) 22
Telephone Audio (Optional) 22

RFMS, Bell 407 GTN GPS/SBAS System 190-01007-J4 Rev. 1
FAA APPROVED Page 5 of 22
GENERAL INFORMATION
Garmin GTN Navigators
The Garmin GTN navigation system is a GPS system with a Satellite Based
Augmentation System (SBAS), comprised of one or more Garmin TSO-C146c
GTN 625, 635, 650, 725, or 750 navigator(s) and one or more Garmin approved
GPS/SBAS antenna(s).
GTN system functions are shown in Table 1.
GTN 625
GTN 635
GTN 650
GTN 725
GTN 750
GPS SBAS Navigation
X
X
X
X
X
VHF Com Radio, 118.00 to 136.990, MHz, 8.33 or 25 kHz
increments
X
X
X
VHF Nav Radio, 108.00 to 117.95 MHz, 50 kHz increments
X
X
LOC and Glideslope non-precision and precision approach
guidance, 328.6 to 335.4 MHz tuning range
X
X
Moving map including topographic, terrain, aviation, and
geopolitical data
X
X
X
X
X
Display of datalink weather products, SiriusXM, Connext ( all
optional)
X
X
X
X
X
Display of terminal procedures data (optional)
X
X
Display of traffic data
X
X
X
X
X
Display of marker beacon annunciators (optional)
X
X
Remote audio panel control (optional)
X
X
Remote transponder control (optional)
X
X
X
X
X
Remote audio entertainment datalink control (optional
X
X
X
X
X
TSO-C194 HTAWS (optional)
X
X
X
X
X
Supplemental calculators and timers
X
X
X
X
X
Control of GSR 56 Iridium Satellite Phone and SMS Text
(optional)
X
X
X
X
X
Table 1 –GTN Functions
The GPS navigation functions and optional VHF communication and navigation
radio functions are operated by dedicated hard keys, a dual concentric rotary
knob, or the touchscreen.
The GTN requires a reasonable degree of familiarity to avoid becoming too
engrossed at the expense of basic see-and-avoid in VMC. Garmin provides
training tools with the Pilot’s Guide and PC based simulator. Pilots should take
full advantage of these training tools to enhance system familiarization.

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Page 6 of 22 FAA APPROVED
Figure 1 - GTN 750 Control and Display Layout
Figure 2 - GTN 635/650 Control and Display Layout

RFMS, Bell 407 GTN GPS/SBAS System 190-01007-J4 Rev. 1
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Capabilities
The following GTN equipment is installed in this aircraft:
GTN 750
GTN 725
GTN 650
GTN 635
GTN 625
The GTN system and associated navigation interface in this aircraft have the
following capability, in addition to the core GPS navigation and display
capability:
VHF Communication Radio
VHF Navigation
HTAWS
Definitions
The following terminology is used within this document:
GPS: Global Positioning System
GTN: Garmin Touchscreen Navigator
HTAWS: Helicopter Terrain Awareness and Warning System
IFR: Instrument Flight Rules
LOC: Localizer
NOTAM: Notice to Airmen
RMT: Remote
SBAS: Satellite Based Augmentation System
SD: Secure Digital
TAS: Traffic Awareness System
TCAS: Traffic Collision Avoidance System
TFR: Temporary Flight Restriction
TIS: Traffic Information Service
VCO: Voice Call Out
VHF: Very High Frequency
VFR: Visual Flight Rules
VMC: Visual Meteorological Conditions
XFR: Transfer

190-01007-J4 Rev. 1 RFMS, Bell 407 GTN GPS/SBAS System
Page 8 of 22 FAA APPROVED
Section 1. LIMITATIONS
1.1 Kinds of Operation
This model helicopter shall only be operated under VFR conditions in
accordance with 14 Code of Federal Regulations Part 91 and/or Part 135. This
RFM supplement does not grant approval for IFR operations to aircraft limited
to VFR operations.
1.2 Applicable System Software
Use of this RFMS is limited to the software versions shown in Table 2.
Software Item
Software Version
(or later FAA Approved versions for this STC)
Main SW Version
4.00
Table 2 - Software Versions
The Main software versions are displayed on the start-up page immediately after
power-on. All software versions displayed in Table 2 can be viewed on the
System –System Status page.
1.3 SD Card
The SD card shall be present in the unit at all times.
1.4 Ground Operations
SafeTaxi or Chartview functions shall not be used as the sole basis for ground
maneuvering.
SafeTaxi and Chartview functions do not comply with the requirements of AC
20-159 and are not qualified to be used as an airport moving map display
(AMMD). SafeTaxi and Chartview may be used by the flight crew to orient
themselves on the airport surface to improve flight crew situational awareness
during ground operations.
1.5 Terrain Proximity Function (All Units)
Aircraft maneuvers and navigation shall not be predicated upon the use of the
terrain display.
The terrain display is intended to assist the pilot with maintaining awareness of
the proximity of terrain and obstacles to the rotorcraft. By itself, the terrain
display may not provide either the accuracy or the fidelity on which to base
decisions and plan maneuvers to avoid terrain or obstacles.

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1.6 HTAWS Function (Optional)
HTAWS shall NOT be used for navigation purposes.
HTAWS shall only be inhibited when in visual contact with terrain and when
the pilot can be assured of maintaining clearance from terrain and obstacles.
RP Mode shall only be used when in visual contact with terrain.
External HTAWS annunciators installed in the aircraft shall be fully functional
in order to use the HTAWS system.
The external “HTAWS ALERT ACK” switch shall be used in lieu of the Alert
Acknowledge function under the Terrain page menu to minimize pilot workload
during alert conditions.
NOTE
Terrain Proximity and HTAWS are separate features and
mutually exclusive. If “HTAWS” is shown on the bottom
right of the dedicated terrain page, then HTAWS is installed.
1.7 Datalinked Weather Display (Optional)
This limitation applies to datalinked weather products from SiriusXM via a
GDL 69/69A and Connext via a GSR 56.
Data link weather information shall not be used for maneuvering in, near, or
around areas of hazardous weather.
The indicated data link weather product age shall not be used to determine the
age of the weather information shown by the data link weather product.
Information provided by data link weather products may not accurately depict
current weather conditions. Due to time delays inherent in gathering and
processing weather data for data link transmission, the weather information
shown by the data link weather product may be significantly older than the
indicated weather product age.
Data link services shall not be the sole means used to obtain Temporary Flight
Restriction (TFR) or Notice to Airmen (NOTAM) information. Not all TFRs
and NOTAMS may be available on the GTN.
1.8 Traffic Display (Optional)
The display of traffic is an aid to visual acquisition and shall not be utilized for
aircraft maneuvering.
1.9 Flight Planner/Calculator Functions
The Fuel Planning page shall not be used as a means to determine actual fuel on
board the aircraft.

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1.10 Glove Use / Covered Fingers
No article shall be used to cover fingers used to operate the GTN unless the
Glove Qualification Procedure located in the Pilot’s Guide/Cockpit Reference
Guide has been successfully completed. The Glove Qualification Procedure is
specific to a pilot / glove / GTN 725, 750 or GTN 625, 635, 650 combination.
1.11 Demo Mode
Demo mode shall not be used in flight under any circumstances.
1.12 Telephone Audio
Telephone audio shall not be turned on to the pilot or co-pilot unless a phone
call is active.
Failure to turn off telephone audio when the telephone is not in use may result in
telephone ringer or text message aural notifications being received during
critical phases of flight.