Sandel ST3400H HeliTAWS User manual

ST3400H
Helicopter
Terrain Awareness
Warning System
Installation Manual
Sandel Avionics
2401 Dogwood Way
Vista, CA 92081
Phone [phone]
FAX [phone]
Website: www.sandel.com
Email: [e-mail]
82046-IM-K

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82046-IM-K ST3400H INSTALLATION MANUAL Page ii

82046-IM-K ST3400H INSTALLATION MANUAL Page iii
Revision History
Revision Date Comments
K 10-14-2016
Revised IAW AR 2363
Section 8.1: Updated to add note regarding required
software versions when using non-WAAS Garmin
400/500 series GPS.
Section 12: Updated List of Effective Drawings to reflect
update to installation drawing 82046-10 sheet 3.
Section 12: Updated installation drawing 82046-10 sheet
3 to add note regarding required software versions when
using non-WAAS Garmin 400/500 series GPS. Notes
3,4,5 updated for clarity. Note references updated for
clarity and consistency.
J 8/19/2015
REVISED IAW AR 2107
Section 6.8: Updated to include APN-209. Cal note
updated.
Section 8.3: Updated to include APN-209
Section 12: List of effective drawings updated.
H 07-06-2015
REVISED IAW AR 1477
Section 1.2: Added notes to limitations regarding
installation location and electrical interconnection
information.
Section 1.4.1: Removed user-defined obstacle provision
statement.
Section 1.6: Formatting updated.
Section 1.6.1: Approval data updated. ETSO data added.
Section 1.6.2: Weight spec updated.
Section 1.7: Formatting updated.
Section 2: Updated section title to Installation Planning
and Procedures.
Section 2.2: Updated to include equipment
Section 2.2.1: Updated to include equipment. Added
Audio system.
Section 2.2.3: Added note describing North Up display
with no heading and track while in maintenance mode.
Section 2.3 Reformatted. Added additional steps to Pre-
Installation Planning.
Section 2.4 Added Installation
Section 2.5: Was Section 2.4 - Added additional Post
Installation steps.
Section 3.3: Added note describing North Up display with
no heading and track while in maintenance mode.
Section 4.3.2: Updated human factors section.
Section 4.3.3: Changed the word diagrams to drawings.
Section 4.3.4: New section: Mounting locations.

82046-IM-K ST3400H INSTALLATION MANUAL Page iv
Section 4.4: Reformatted. Updated ground bonding note.
Section 5.4: Updated to show that the CM functionality is
reserved for future use. Added text to advise leaving CM
plugged in.
Section 5.5: Updated to show that the CM functionality is
reserved for future use.
Section 6: Retitled to “System Configuration.”
Section 6.11: Added note for when to configure the
ST3400H using the (SW) setting.
Section 6.14: Added text for Mode 1 arming altitude.
Corrected axis titles on Standard Mode-1 curve.
Section 7: Added return to service statement at
beginning of chapter.
Section 7.8: Heading clarified as “Optional Interface”.
N/A column added.
Section 7.9: Heading clarified as “Optional Interface”.
N/A column added. Clarified Result text for Heading
Value.
Section 7.10: Heading clarified as “Option Configuration”.
Text added to indicate NVIS may require additional
installation approval. Additional inputs added. N/A
Column added.
Section 7.11: Heading clarified as “Optional Interface”.
N/A column added.
Section 7.12: Heading clarified as “Optional Interface”.
N/A column added.
Section 7.13: Heading clarified as “Required”.
Sections 7.14: Heading clarified as “Optional Interface”.
N/A column added.
Section 7.15: Heading clarified as “Optional Interface”.
N/A column added. Clarified Result text to add that audio
should also be heard.
Section 7.16: Heading clarified as “Optional Interface”.
Section formatting updated.
Section 7.17: Heading clarified as “Optional Interface”.
Section formatting updated. Section updated for new
SENS mode functionality.
Section 7.18: Section formatting updated.
Section 7.19: Heading clarified as “Optional Interface”.
Section formatting updated.
Section 7.20: Section formatting updated.
Section 7.21: Test step updated for clarity. Section
formatting updated.
Section 7.22: Test step updated. Section formatting
updated.
Section 7.23: Section formatting updated.

82046-IM-K ST3400H INSTALLATION MANUAL Page v
Section 7.24: New content.
Section 7.25: New content.
Section 8.2: Changed KLN-90 to KLN-90B (ARINC 429).
Section 8.3: Added KRA-405B. Removed ARINC 552
equipment.
Section 8.4: Added Bendix King KSG105, Chelton
ADAHRS, Litef LCR 92, and Sagem APIRS. Clarified
XYZ is ARINC 407.
Section 8.5: Added Bendix/King 634A. Added /W and
Analog interface to GNS430/530. Added Analog
interface to GTN 650/750. Added Bendix/King KX155A.
Section 8.6: Added Chelton ADAHRS. Added
Thales/Sextant ADU3000. Removed AEL MOD 8, 10, 12.
Section 8.7: Changed all from ARINC 429 to ARINC
429H. Removed Skywatch. Changed Goodrich Skywatch
497 to Skywatch (Sky 497). Removed Garmin GDL-90.
Section 8.8 Added Equipment Approval Basis Table.
Section 8.9: Was 8.8.
Section 10.1: AML reference added.
Section 11: Added text referencing FAA accepted ICA.
Section 12: List of effective drawings updated.
G 25-AUG-2014
REVISED IAW AR 1416
Section 1.2: Added note to Limitations regarding display
of DME arcs, holding patterns, and procedure turns.
Section 3.4: updated to include 400’ mandatory callout
when in HIG-SENS.
Section 3.9.1: Updated notes for TAWS INH and OFF-
APT mode selection.
Page 6-1: Screenshot updated.
Section 6.1: Screenshot updated.
Section 6.2: System information updated to display Patch
Level.
Section 6.14: Maintenance page renamed to OPTIONS.
Screen shot and table update for HIGH SENS
configuration selections. Added STD and RUS Mode-1
curves.
Section 7.7: Updated. Callouts page renamed Options.
New fields for Mode-1 options.
Section 7.8: Air data input checkout procedure and
tolerance updated.
Section 8.6: Added SAC 7-35 ADC.
Section 10: STC Information updated to include Part 27
and Part 29 AML STCs.
Section 12: Updated List of Effective Drawings
F 12-DEC-2013
Revised IAW AR1418
Section 1.9: 32062 and 32063 Positronic part numbers

82046-IM-K ST3400H INSTALLATION MANUAL Page vi
corrected. Added Flush mount shim to Installation Kit
Section 2.2.2: Removed Collective down as an optional
sensor.
Section 3.12: Minimum OS requirement updated from
Windows 98 to Windows XP
Section 5.3: Section reference corrected (changed from
0 to 8).
Section 6.10: Screenshots updated.
Section 6.16: Screenshot updated.
Sections 8.1 and 8.2 updated for addition of Garmin
GTN-6XX/7XX equipment selections.
Section 12: List of effective drawings updated. Sheet 1
updated to show additional power and ground pins on
connector P2. Sheets 2 & 8 updated for addition of
Garmin GTN-6XX/7XX equipment selections. Sheet 7 –
missing LOC pin numbers added. Sheet 11 Removed
TCAS II references.
E 02-JUL-2013 Revised IAW AR1349
Section 4: Added human factors installation
considerations.
Added Section 7.23: Accessibility and Operation
D 05-OCT-2011 Revised IAW AR1189
Section 4.6 Rename P2-2
Corrected discrete labels.
Section 6.2, new System page image. Configuration
Field table updated.
Section 6.9, new FMS page image
Section 12, updated list of drawings.
C2 27-MAY-2011 Revised IAW AR1186
Removed section 1.3 NVIS Export Control Notice.
Revised Table 8.1 to include Garmin GPS Non WAAS
Revised Table 8.7 to include Garmin GDL-90 Traffic
sensor
Section 10.2, added Part 27 STC certificate and letter.
Section 12, updated list of drawings.
C1 13-DEC-2010 Revised IAW AR1155
Revised 3.6 to include reference to MOD-1 and SIL
3400H-01.
Revised table 4.5 and 4.6 for consistency with table 4.9.
Revised table 4.9 account for surge protection
Corrected Table 12 List of Effective Drawings
C 24-SEP-2010 Revised for S/W version 1.01
Corrected Ground test procedures.

82046-IM-K ST3400H INSTALLATION MANUAL Page vii
Updated section 12 drawing list, 82046-10 sheets 3 & 7.
B 05-AUG-2010 Initial Release

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TABLE OF CONTENTS
1GENERAL INFORMATION .......................................................................1-1
1.1 Introduction......................................................................................................................1-1
1.2 LIMITATIONS................................................................................................................1-1
1.3 Radalt Indicator Replacement..........................................................................................1-1
1.4 Equipment Description ....................................................................................................1-2
1.4.1 Features.....................................................................................................................................1-2
1.4.2 FAA HTAWS Requirement......................................................................................................1-2
1.5 Databases.........................................................................................................................1-3
1.5.1 Coverage area............................................................................................................................1-3
1.5.2 Keeping the databases current...................................................................................................1-3
1.6 Technical Specifications..................................................................................................1-4
1.6.1 Approval Data...........................................................................................................................1-4
1.6.2 Physical Dimensions.................................................................................................................1-4
1.6.3 Operational Characteristics.......................................................................................................1-5
1.7 Interface Characteristics...................................................................................................1-5
1.8 System Part Number........................................................................................................1-6
1.9 Installation Kit Part Number............................................................................................1-6
1.10 License Requirements......................................................................................................1-6
1.11 Installation and Operational Approval Procedures..........................................................1-6
2INSTALLATION PLANNING AND PROCEDURES..................................2-1
2.1 General Information.........................................................................................................2-1
2.2 Supported Sensor/Equipment Configurations..................................................................2-1
2.2.1 Required Sensors/Equipment....................................................................................................2-1
2.2.2 Optional Sensors.......................................................................................................................2-1
2.2.3 Recommended Optional Sensors ..............................................................................................2-1
2.3 Pre-installation Planning..................................................................................................2-2
2.4 Installation .......................................................................................................................2-4
2.5 Post Installation Procedures.............................................................................................2-4
3INTERFACE FUNCTIONS.........................................................................3-1
3.1 Power ...............................................................................................................................3-1
3.2 GPS/FMS.........................................................................................................................3-1
3.3 Heading System...............................................................................................................3-1
3.4 Radar Altimeter................................................................................................................3-1
3.5 Glideslope........................................................................................................................3-2
3.6 Air Data Computer...........................................................................................................3-2
3.7 Traffic ..............................................................................................................................3-2
3.8 Landing Gear ...................................................................................................................3-2
3.9 External Switches and Annunciators...............................................................................3-2
3.9.1 External Switch + Annunciator Functions ................................................................................3-3
3.9.2 External Annunciator-Only Functions ......................................................................................3-3
3.9.3 External Control Discrete Outputs............................................................................................3-3
3.9.4 Annunciator Default Functions.................................................................................................3-3
3.10 NVIS Control...................................................................................................................3-4
3.11 Audio Output ...................................................................................................................3-4
3.12 Uploading Equipment......................................................................................................3-4
3.13 Display Dimming.............................................................................................................3-4
4INSTALLATION......................................................................................... 4-1
4.1 Unpacking and Inspecting Equipment.............................................................................4-1
4.2 Cooling Considerations....................................................................................................4-1
4.3 Mechanical Installation Considerations...........................................................................4-1
82046-IM-K ST3400H INSTALLATION MANUAL Page ix

4.3.1 Instrument Location in the Cockpit...........................................................................................4-1
4.3.2 Human Factors..........................................................................................................................4-1
4.3.3 Assembly and Mounting Instructions .......................................................................................4-2
4.3.4Mounting Locations..................................................................................................................4-2
4.4 Electrical Installation Considerations ..............................................................................4-5
4.5 Connector P1....................................................................................................................4-7
4.6 Connector P2..................................................................................................................4-10
4.7 Connector P3..................................................................................................................4-11
4.8 Configuration Module Connector..................................................................................4-12
4.9 Electrical Characteristics by Signal Type......................................................................4-13
5SETUP PROCEDURES............................................................................. 5-1
5.1 General.............................................................................................................................5-1
5.2 Accessing Maintenance Menus........................................................................................5-1
5.3 Equipment/Configuration Selections...............................................................................5-1
5.4 Configuration Module – (Reserved for future use)..........................................................5-1
5.5 Configuration Module Status Page - (Reserved for future use).......................................5-1
6SYSTEM CONFIGURATION.....................................................................6-1
6.1 Page 1: INDEX................................................................................................................6-3
6.2 Page 2: SYSTEM.............................................................................................................6-4
6.3 Page 3: AIR DATA..........................................................................................................6-5
6.4 Page 4: HDG....................................................................................................................6-6
6.5 Page 5: DISCRETES .......................................................................................................6-7
6.6 Page 6: OUTPUT PINS...................................................................................................6-8
6.7 Page 7: NAV / ILS...........................................................................................................6-9
6.8 Page 8: RADALT ..........................................................................................................6-10
6.9 Page 9: FMS (Flight plan)............................................................................................6-12
6.10 Page 10: GPS (Position).................................................................................................6-12
6.11 Page 11: TCAS ..............................................................................................................6-13
6.12 Page 12: STATUS .........................................................................................................6-15
6.13 Page 13: BRT / AUDIO.................................................................................................6-16
6.14 Page 14: OPTIONS........................................................................................................6-17
6.15 Page 15: POWER...........................................................................................................6-20
6.16 Page 16: SFTWR CRC ..................................................................................................6-20
7CHECKOUT PROCEDURES.....................................................................7-1
7.1 Power-On Self-Test .........................................................................................................7-1
7.2 ST3400H TAWS..............................................................................................................7-1
7.3 Install Sandel ST3400H TAWS into aircraft...................................................................7-1
7.4 Record the following Aircraft Information......................................................................7-1
7.5 Record the following system information:.......................................................................7-1
7.6 Required Test Equipment: ...............................................................................................7-1
7.7 ST3400H Configuration...................................................................................................7-2
7.8 Air Data Input (Optional Interface) .................................................................................7-4
7.9 Heading Input (Optional Interface)..................................................................................7-4
7.10 Discrete Inputs (Optional Configuration)........................................................................7-4
7.11 NAV& ILS Input (Optional Interface).............................................................................7-6
7.12 Radar Altimeter (Optional Interface)...............................................................................7-6
7.13 GPS Position (Required)..................................................................................................7-7
7.14 FMS Flight Plan (Optional Interface)..............................................................................7-7
7.15 Traffic (Optional Interface)..............................................................................................7-7
7.16 MUTE switch (Optional Interface)..................................................................................7-8
7.17 Sensitivity switch (Optional Interface)............................................................................7-8
82046-IM-K ST3400H INSTALLATION MANUAL Page x

7.18 HTAWS self-test..............................................................................................................7-8
7.19 External Annunciators (Optional Interface).....................................................................7-8
7.20 Display.............................................................................................................................7-9
7.21 Manual brightness............................................................................................................7-9
7.22 Visibility..........................................................................................................................7-9
7.23 Accessibility and Operation.............................................................................................7-9
7.24 EMC TEST PROCEDURE............................................................................................7-10
7.25 AUDIO TEST................................................................................................................7-10
8SENSOR COMPATIBILITY.......................................................................8-1
8.1 Position ............................................................................................................................8-1
8.2 FMS Flight Plan...............................................................................................................8-1
8.3 Radar Altimeter................................................................................................................8-1
8.4 Heading System / AHRS .................................................................................................8-2
8.5 Navigation Receiver.........................................................................................................8-2
8.6 Airdata .............................................................................................................................8-2
8.7 Traffic ..............................................................................................................................8-3
8.8 Equipment Approval Basis..............................................................................................8-3
8.9 ARINC 429 Master Label List.........................................................................................8-4
9ENVIRONMENTAL QUALIFICATION FORM ...........................................9-1
10 SUPPLEMENTAL TYPE CERTIFICATE................................................. 10-1
10.1 STC Permission .............................................................................................................10-1
10.2 Part 27 AML STC..........................................................................................................10-2
10.3 Part 29 AML STC..........................................................................................................10-6
11 INSTRUCTIONS FOR CONTINUED AIRWORTHINESS........................ 11-1
11.1 Periodic Maintenance.....................................................................................................11-1
11.2 Cleaning the Front Panel................................................................................................11-1
11.3 Display Light Source .....................................................................................................11-1
11.4 Trouble Shooting Information .......................................................................................11-1
11.5 Removal and Replacement ............................................................................................11-2
11.6 Database Updates...........................................................................................................11-2
11.7 Software Updates...........................................................................................................11-2
12 LIST OF EFFECTIVE DRAWINGS AND ATTACHMENTS..................... 12-1
82046-IM-K ST3400H INSTALLATION MANUAL Page xi

1 GENERAL INFORMATION
1.1 Introduction
The information contained within this Installation Manual describes the features, functions,
technical characteristics, components, approval procedures, installation considerations, setup
procedures, checkout procedures and instructions for continued airworthiness for the Sandel
Avionics ST3400H Helicopter Terrain Awareness Warning System. For an explanation of the
operating controls of the ST3400H, refer to the Pilot’s Guide for the ST3400H, Sandel
Avionics P/N 82046-PG.
Sandel Avionics ST3400H HTAWS may be covered by one or more U.S. and foreign patents
and pending patent applications, including U.S. Patent Nos. 6,507,288, 6,489,916, and
6,259,378.
1.2 LIMITATIONS
The following stipulation as presented is required by the Federal Aviation Administration for
articles approved under Technical Standard Order. This statement does not preclude multiple
installation and operational approvals in regard to specific aircraft make, model, or type:
The conditions and tests required for TSO approval of this article are minimum performance
standards. Those installing this article, on or in a specific type or class of aircraft, must
determine that the aircraft installation conditions are within TSO standards. TSO articles must
have separate approval for installation in an aircraft. The article may be installed only
according to 14 CFR Part 43 or applicable airworthiness requirements.
Display of DME arcs, Holding Patterns, and Procedure Turns is not currently supported in the
ST3400H.
Any installation location is acceptable provided the ST3400H is installed adjacent to the
helicopter primary displays, it’s display and annunciations are visible to the pilot, and it’s
controls are reachable by the pilot or are suitably remote controlled.
Interconnection of the DC electrical supply to the ST3400H shall be via a non-essential bus for
installation in IFR rotorcraft unless replacing an existing instrument already approved on the
essential bus.
1.3 Radalt Indicator Replacement
The ST3400H Radalt function is provided to allow the ST3400H to replace an existing Radar
Altitude display. Both the current Radar altitude and the selected Minimums alerting altitude
are displayed in digital format.
If a Radar altimeter is not installed in the helicopter, the Radar Altitude will not be displayed
on the screen. The MINS display will be present and may be used by the pilot as a reference.
82046-IM-K ST3400H INSTALLATION MANUAL Page 1-1

1.4 Equipment Description
The Sandel ST3400H is a self-contained HTAWS (Terrain Awareness Warning System)
solution specifically for helicopters that includes an advanced HTAWS computer and an
integrated full-color screen built within a standard 3-inch instrument chassis.
The ST3400H uses Sandel’s patented rear-projection display technology. The projector uses a
miniature active-matrix LCD display that produces a high-resolution image that is rear-
projected directly to the face of the instrument. This technology allows the displayed image to
extend to the edges of the instrument’s bezel. The advantage of this edge-to-edge technology
is that it eliminates the unusable area surrounding conventional LCD and CRT displays. Even
though the Sandel display is in a 3-inch form factor, its image is near the size of a 4” primary
display, and can remain directly in the pilot’s field-of-view.
It can be used as a direct replacement for a currently installed Radar altimeter indicator. It
includes a MINS setter, MINS discrete output, and a Radalt Test discrete output.
The ST3400H includes built-in warning and caution annunciation. The unit also supports
optional external warning or caution annunciation as well as optional collective mounted
momentary switches to control certain functions such as alert muting and modes.
The ST3400H may be installed in a single or dual installation.
The ST3400H has an internal recorder that automatically records approximately twenty hours
of flight data. This data can be reviewed for content in the event of a system malfunction.
1.4.1 Features
HTAWS is the enhanced terrain warning technology for helicopters that uses GPS position
along with databases of terrain and obstacles to reduce or eliminate CFIT accidents. It is
similar to the Sandel ST3400 fixed-wing TAWS, with feature enhancements specific to
helicopter operations close to the ground.
•Increased vertical accuracy
•Separate obstacle database
•On-screen obstacle display
•3 arc-second terrain data
The following 5 standard GPWS functional modes (modified for helicopter) are provided for
when equipped with supported Radar altimeter and airdata computer:
•ERD (excessive rate of descent)
•ALAT (altitude loss after takeoff)
•FITNL (flight into terrain when not in landing configuration)
•EDGSD (excessive downward glide slope deviation).
•400 feet and below Voice Callouts
1.4.2 FAA HTAWS Requirement
The ST3400H exceeds the FAA requirements for HTAWS alerting, annunciation, and
display for installation in Part 27 and Part 29 helicopters
82046-IM-K ST3400H INSTALLATION MANUAL Page 1-2

1.5Databases
1.5.1 Coverage area
The internal Terrain and Obstacle databases include terrain, charted man-made obstacles,
airports, and heliports.
The Terrain and Airport databases are provided by geographical area. The coverage area of
the database installed in the ST3400H is shown as part of the sign-on screen after a power
cycle.
Remember, there is no guarantee that every obstacle is charted or that every charted obstacle
is in the terrain data.
1.5.2 Keeping the databases current
Updates to the databases can be obtained from the Sandel web site and loaded into the
equipment using a Windows loader program and a laptop computer. This is done through a
high-speed USB port located on the front right corner. Loading instructions are supplied
along with the applicable database.
The databases can be updated during normal maintenance to the helicopter.
82046-IM-K ST3400H INSTALLATION MANUAL Page 1-3

1.6 Technical Specifications
The following section describes the technical characteristics, which include the appliance
approval basis, physical and electrical properties, electrical connector pin allocation which
details function and gradient or equipment protocol, and ARINC label support. Also included
is the description of the ST3400H installation components, other equipment and installation
requirements. A review of the installation approval procedures is provided for filing with
authorities.
1.6.1 Approval Data
Technical Standard Orders
(TSO and ETSO): TSO-C87 / ETSO-2C87 Airborne Low-Range Radio Altimeter (Incomplete – ST3400H provides display only)
TSO-C113 / ETSO-C113 Airborne Multipurpose
Electronic Display
TSO-C118 / ETSO-C118 Traffic Alert and Collision
Avoidance System (TCAS-I) (Incomplete – ST3400H
provides display only)
TSO-C194 / ETSO-C194 Helicopter Terrain Awareness
and Warning System (HTAWS)
Software Certification:
DO-178B Level C
Environmental:
DO-160F
Databases: DO-200A
1.6.2 Physical Dimensions
The ST3400H is enclosed in an ARINC 408, 3ATI form factor enclosure and is mounted to
an instrument panel.
Form Factor: 3ATI (ARINC 408)
Width: 3.175 inches
Height: 3.175 inches
Length: 9.5 inches
Weight:
2.77 pounds with configuration module. (Cable weight not
included)
Mounting: 3 ATI Clamp
Display: 200dpi
82046-IM-K ST3400H INSTALLATION MANUAL Page 1-4

1.6.3 Operational Characteristics
Temperature/Altitude: -20° C to +70° C / up to 55,000 F
Power Input: 28VDC nominal, 40 watt maximum. Operating range
22VDC – 33VDC
Cooling Requirements:
Internal fan. Requires ambient air at fan input along the four
corners of the 3ATI case.
1.7 Interface Characteristics
The ST3400H is software configurable and configuration data is stored internally and in an
optional airframe-resident configuration module.
Configuration Module: Rear mounted inside 9-pin ‘D’ connector shell
Data Loading: Front panel USB
GPS Position: ARINC 429 or RS232
GPS Flight plan:
ARINC 429 or RS232
Air Data: ARINC 429 or Analog
Heading: ARINC 429 or ARINC 407 (XYZ)
Gear: Discrete: active high or low
Glideslope:
ARINC 429 or low-level deviation and flag
Localizer:
ARINC 429 or low-level deviation and flag
Audio Outputs: 4 to 8 ohm speaker, 5 watt max
500 ohm, 25mw or 125mw configurable via strap
External Annunciators: Open/GND (Open Drain) GND=Active
250ma maximum (installation optional)
External Switches:
Momentary action, Open/GND
GND to activate (installation optional)
Radar Altimeter: ARINC 429 or Analog
Traffic: ARINC 429
82046-IM-K ST3400H INSTALLATION MANUAL Page 1-5

1.8 System Part Number
The part number for the Sandel HTAWS is comprised of two parts. The basic Model
designation “ST3400H” and a dash number, ST3400H-xxx. The dash number designates
minor product variations, bezel color and/or NVIS support.
1) ST3400H-000, Gray Bezel
2) ST3400H-001, Black Bezel
3) ST3400H-000N, Gray Bezel with NVIS support
4) ST3400H-001N, Black Bezel with NVIS support
1.9 Installation Kit Part Number
An installation kit is available for the ST3400H.
ST3400H INSTALLATION KIT (P/N 90254-IK)
Qty
Sandel P/N
Positronic P/N
Description
1 32063 DD44F10JVL0 Connector 44 pin
Plastic Hood/Slide Lock and Contacts
1 32062 SD15F10JVL0 Connector 15 pin
Plastic Hood/Slide Lock and Contacts
1 32111 SD9F10JVL0-15 Connector 9 pin
Plastic Hood/Slide Lock and Contacts
1
61044
N/A
Flush mount shim
1 61062 N/A 3ATI Clamp
1.10License Requirements
None.
1.11Installation and Operational Approval Procedures
The Environmental Qualification Form for the ST3400H included in section 9 of this
Installation Manual should be referenced to the categories appropriate to the aircraft type and
environment into which the ST3400H is to be installed. The environmental category for the
ST3400H should be stipulated on the STC form.
ST3400H - xxxx
Model Minor
Variation
82046-IM-K ST3400H INSTALLATION MANUAL Page 1-6

A “Functional Ground Test Procedures/Report” included in section 7 of this manual should be
used as a basis for validating the ST3400H equipment configuration and to verify proper
installation and functional performance. A permanent copy of the STC form must be filed and
maintained by the installing agency. Another copy must be presented to the aircraft owner for
entry into the aircraft maintenance records, as well as a copy forwarded to Sandel Avionics
along with the Warranty Registration Form, to be filed after completion and installation
acceptance.
If any difficulty is experienced with the functionality or operational performance of the
ST3400H, contact Sandel for assistance.
82046-IM-K ST3400H INSTALLATION MANUAL Page 1-7

2 INSTALLATION PLANNING AND PROCEDURES
The ST3400H has been designed to ensure maximum interoperability with external avionics.
Contact Sandel with any questions about interfacing to specific avionics equipment not covered
in the installation drawings in this manual.
2.1 General Information
To simplify installation, after signals are wired to the ST3400H pins, on-screen setups are used
in a post-installation procedure. Maintenance menu pages provide a function selection
capability. For most equipment, selections are made by equipment make and model.
Refer to the installation schematics section 12 of this manual, for details on connecting
required components.
2.2 Supported Sensor/Equipment Configurations
2.2.1 Required Sensors/Equipment
•GPS position
•Gear (only if the helicopter has retractable gear).
•Audio system with available unswitched input.
2.2.2 Optional Sensors
•Heading Display: Provides no-track terrain display
•GPS Flight plan Display: displays flight plan line
•Radar Altitude GPWS: Provides callouts;
•Airdata GPWS: improves accuracy of certain modes
•LOC/GS GPWS: adds Glideslope alert
2.2.3 Recommended Optional Sensors
A Heading Sensor is highly recommended; without a heading system no terrain will be
presented on the display during hover operations or on-ground. When in maintenance mode,
with no heading system and track invalid, unit displays North Up.
Radar Altitude is highly recommended. This not only supplies numerous GPWS alerts, but
provides altitude callouts which provide an additional safety benefit.
82046-IM-K ST3400H INSTALLATION MANUAL Page 2-1

2.3 Pre-installation Planning
The installation planning steps are summarized as follows:
1) Confirm the aircraft model is listed on the Approved Model List Supplemental Type
Certificate (AML STC). See section 10 for the AML STC details.
YES
Go to step 2.
NO
Contact Sandel Avionics for guidance. Additional FAA approval will
be required.
2) Identify mounting location on instrument panel. Is the intended location listed in section
4.3.4 of this Installation Manual?
YES Go to step 3.
NO
Contact Sandel Avionics for guidance. Additional FAA approval may
be required.
3) Determine that the aircraft has the minimum required sensors & equipment See section
2.2.1 of this IM.
YES
Go to step 4.
NO
The ST3400H cannot be installed.
4) Compile an equipment list for the helicopter. Complete Installation Worksheet.
Worksheet can be found at: http://www.sandel.com/st3400h/st3400h-support.
Determine that the sensors to be interface to the ST3400H are supported / approved.
Reference Section 8 (Sensor Compatibility)
YES
Go to step 5.
NO
Contact Sandel Avionics for guidance. Additional FAA approval may
be required.
82046-IM-K ST3400H INSTALLATION MANUAL Page 2-2