ARTEX ELT 4000S Instruction Manual

ARTEX PRODUCTS / ACR ELECTRONICS, INC.
5757 Ravenswood Rd, Ft. Lauderdale, FL 33312
Phone [phone], Fax [phone]
www.acrartex.com
ARTEX ELT 4000S
Emergency Locator Transmitter
Survival
Description, Operation, Installation and Maintenance Manual
Y1-03-0364 Rev. E
ATA Code #25-62-38

ARTEX PRODUCTS / ACR ELECTRONICS, INC.
DESCRIPTION, OPERATION, INSTALLATION AND MAINTENANCE MANUAL
ARTEX ELT 4000S
Y1-03-0364 Rev E Company Confidential 25-62-38 Page 2of 54
This manual includes data for the following equipment:
Component
Part No.
Beacon and Battery
A3-06-3168
Beacon and Battery (Boeing only)
A3-06-3168-1
Mounting Bracket, Pin Right
A3-06-3190-2
Mounting Bracket, Pin Left
A3-06-3190-3
Battery
A3-06-3182
Lanyard, 15 ft.
A3-06-3240
Velcro Strap
A2-05-0195
Clear Overlaminate Label
A1-18-2008
Screw, #6-32 x ½” Torx
A1-05-1008-500
O-Ring
A1-05-1009-3
Current Draw
A3-06-3274
Parts may be ordered from ACR Electronics, Inc. or any Authorized Dealer.
CONTACT INFORMATION:
Sales, ACR Electronics, Inc. / ARTEX Products
5757 Ravenswood Rd.
Fort Lauderdale, FL 33312-6645 USA
Phone: [phone]
Fax: [phone]

ARTEX PRODUCTS / ACR ELECTRONICS, INC.
DESCRIPTION, OPERATION, INSTALLATION AND MAINTENANCE MANUAL
ARTEX ELT 4000S
Y1-03-0364 Rev E Company Confidential 25-62-38 Page 3of 54
NOTICES
Proprietary Information
This document contains proprietary information, and such information may not be disclosed to
others for any purpose, nor used for manufacturing purposes, without written permission from
ACR Electronics, Inc.
Information in this manual is subject to change without notice. ACR Electronics, Inc. (ACR)
makes no warranty, expressed or implied, with regard to this manual, including, but not limited
to any implied warranties of merchantability, fitness for a particular purpose, and non-
infringement. In addition, ACR Electronics, Inc. makes no warranty with regard to the
documentation or data contained herein. ACR is not liable in the event of incidentals, special,
consequential, or any other damages in connection with or arising from furnishing,
performance, or use of this manual.
Reproduction of this publication or any portion thereof by any means is prohibited. For further
information contact Sales, ACR Electronics Inc. 5757 Ravenswood Rd, Fort Lauderdale, FL
33312 or by phone [phone].
Airworthiness Limitations
The Airworthiness limitations section is FAA approved and specifies inspections and other
maintenance required under 14 CFR§ 43.16 and 91.403, unless an alternative program has
been approved.
Important Notice
ACR Electronics, Inc. will be responsible for full distribution and revisions of Instructions for
Continued Airworthiness (ICA). For inquiries regarding the content and currency of this manual,
contact: ACR Electronics, Inc. 5757 Ravenswood Rd, Fort Lauderdale, FL 33312 or by phone
[phone] or by email [e-mail].

ARTEX PRODUCTS / ACR ELECTRONICS, INC.
DESCRIPTION, OPERATION, INSTALLATION AND MAINTENANCE MANUAL
ARTEX ELT 4000S
Y1-03-0364 Rev E Company Confidential 25-62-38 Page 4of 54
Table of Contents
Table of Contents............................................................................................................... 4
List of Acronyms, Abbreviations and Definitions .................................................................... 5
Record of Revisions............................................................................................................ 8
Service Bulletin List ............................................................................................................ 9
List of Effective Pages .......................................................................................................10
System Overview ..............................................................................................................11
Introduction .....................................................................................................................12
Table 1 –Environmental Categories....................................................................................14
Description and Operation .................................................................................................17
Specifications....................................................................................................................23
Table 2 - Environmental and Physical Specifications .............................................................23
Table 3 –Electrical Specifications .......................................................................................24
Testing and Fault Isolation.................................................................................................25
Inspection and Test Procedures .........................................................................................25
Table 4 - ELT Inspection and Checklist................................................................................25
Fault Isolation...................................................................................................................36
Table 5 –Beacon Self-Test Error Codes and Troubleshooting Guide ......................................38
Table 6 –ELT Troubleshooting Guide..................................................................................39
Installation and Removal ...................................................................................................41
Battery Preparation, Removal and Replacement...................................................................44
Battery Replacement .........................................................................................................47
Material or Equipment Return.............................................................................................48
Illustrated Parts List ..........................................................................................................49
Table 7 - Main Assembly Components.................................................................................51
Appendix A –ELT Registration ...........................................................................................52
Appendix B –Return Material Authorization Request Form....................................................54

ARTEX PRODUCTS / ACR ELECTRONICS, INC.
DESCRIPTION, OPERATION, INSTALLATION AND MAINTENANCE MANUAL
ARTEX ELT 4000S
Y1-03-0364 Rev E Company Confidential 25-62-38 Page 5of 54
List of Acronyms, Abbreviations and Definitions
ACTIVATION
Activation refers to a Survival (S) ELT that has been commanded to
transmit, either manually or by water activation, but may not be
transmitting on one or more frequencies.
CFR
Code of Federal Regulations –The general and permanent rules
published in the Federal Register by the executive departments and
agencies of the Federal Government. Title 14, “Aeronautics and
Space”, contains the FARs.
CIRCULAR
CONNECTOR
Round connectors –connector for low voltage/current signals and
electrical currents.
COSPAS-SARSAT
The international search and rescue consortium that governs the
international satellite-based search and rescue distress alert
detection and information distribution system. For a complete
description, go to the official web site for the International COSPAS-
SARSAT Program, http://www.cospas-sarsat.int/en/
ELT
Emergency Locator Transmitter –ELTs are installed on aircraft and
used to send emergency signals to the SAR satellite system. The
word “Beacon” is associated with these devices.
FAA
Federal Aviation Administration –The United States government
agency for aircraft safety and regulation.
FAR
Federal Aviation Regulations –the rules and regulations governing
the manufacture, certification, operation, maintenance, repair and
alteration of aircraft in the United States.
FORM 337
FAA Form 337 is required when a major repair and/or major
alteration is performed on an aircraft. Refer to FAR, Part 43,
Appendix A and the definitions of Major Repair/Alteration contained
in FAR, Part 1, for guidance.
GEO ORBIT
A Geostationary Orbit, also referred to as a geosynchronous
equatorial orbit, is a circular geosynchronous orbit 35,786
kilometers above the Earth’s equator and following the direction of
the Earth’s rotation.

ARTEX PRODUCTS / ACR ELECTRONICS, INC.
DESCRIPTION, OPERATION, INSTALLATION AND MAINTENANCE MANUAL
ARTEX ELT 4000S
Y1-03-0364 Rev E Company Confidential 25-62-38 Page 6of 54
GNSS
Global Navigation Satellite System - a satellite system that is used
to pinpoint the geographic location of a user's receiver anywhere in
the world.
GPS
Global Positioning Satellite System –a global navigation satellite
system that provides location, velocity and time synchronization.
LED
Light Emitting Diode –Semiconductor device that emits light when
current is passed through it. Usually used as a status or warning
indicator.
LEO
Low Earth Orbit System –An Earth centered orbit with an altitude
of 2000 km or less (approximately one-third of the radius
of Earth), or with at least 11.25 periods per day (an orbital period
of 128 minutes or less) and an eccentricity less than 0.25. Most of
the manmade objects in outer space are in LEO.
P/N
Part Number –Refers to an ACR part number, unless otherwise
noted.
PLUG
The term “Plug”, within the context of this document, refers to the
male half of an electrical connector.
RECEPTACLE
The term “Receptacle”, within the context of this document, refers
to the female half of an electrical connector.
RF
Radio Frequency –The range of electromagnetic radiation that
constitutes the radio spectrum and corresponds to the frequency of
alternating current electrical signals used to produce and detect
radio waves.
RFID
Radio Frequency Identification –involves automatically identifying
objects through low power radio waves.
RMA
Return Material Authorization
RTCA
RTCA Inc. –Organization that makes recommendations for
airworthiness; refer to https://www.rtca.org for more information.
SAR
Search and Rescue - The search for and provision of aid to people
who are in distress or imminent danger. The general field of search

ARTEX PRODUCTS / ACR ELECTRONICS, INC.
DESCRIPTION, OPERATION, INSTALLATION AND MAINTENANCE MANUAL
ARTEX ELT 4000S
Y1-03-0364 Rev E Company Confidential 25-62-38 Page 7of 54
and rescue includes many specialty sub-fields, typically determined
by the type of terrain the search is conducted over.
TAC
Type Approval Certificate - Granted to a product that meets a
minimum set of regulatory, technical and safety requirements.
TETHER
A cord or similar device that anchors something movable to a
stationary point or anchors two items together, such that they
cannot become separated beyond the length of the tether.
TRANSMISSION
Transmission identifies when the ELT is sending a radio signal on
one or more frequencies, which occurs after an ELT has been
activated, either manually or by G-switch.
TSO
Technical Standard Order –A TSO is a minimum performance
standard issued by the FAA for specified materials, parts, and
appliances used on civil aircraft.
UIN
Unique Identification Number –A numeric string that is associated
with a single entity within a given system.
USCG
United States Coast Guard - The coastal defense, search and
rescue, and maritime law enforcement branch of the United States
Armed Forces and one of the country's eight uniformed services.
UTC
Coordinated Universal Time –A time standard based on
International Atomic Time. UTC is the time system used in aviation
and is often associated with Greenwich Mean Time (GMT) and/or
“Zulu” time.
UUT
Unit Under Test –The object that is being tested.
VHF
Very High Frequency –The 30 MHz to 300 MHz radio frequency
band.
VSWR
Voltage Standing Wave Ratio –The ratio of the amplitude of a
partial standing wave at an antinode (maximum) to the amplitude
at an adjacent node (minimum), in an electrical transmission line.
An ideal transmission line would have a VSWR of 1:1.

ARTEX PRODUCTS / ACR ELECTRONICS, INC.
DESCRIPTION, OPERATION, INSTALLATION AND MAINTENANCE MANUAL
ARTEX ELT 4000S
Y1-03-0364 Rev E Company Confidential 25-62-38 Page 8of 54
Record of Revisions
REVISION
CHANGE
DATE
REVISION
CHANGE
DATE
A
ECO 17457
12/17/20
B
ECO 17515
03/04/21
C
ECO 17533
4/1/21
D
ECO 17773
5/3/22
E
ECO 17803
5/18/22

ARTEX PRODUCTS / ACR ELECTRONICS, INC.
DESCRIPTION, OPERATION, INSTALLATION AND MAINTENANCE MANUAL
ARTEX ELT 4000S
Y1-03-0364 Rev E Company Confidential 25-62-38 Page 9of 54
Service Bulletin List
SERVICE
BULLETIN
NO
ISSUE
DATE
SUBJECT
MANUAL
REV NO
MANUAL
REV DATE

ARTEX PRODUCTS / ACR ELECTRONICS, INC.
DESCRIPTION, OPERATION, INSTALLATION AND MAINTENANCE MANUAL
ARTEX ELT 4000S
Y1-03-0364 Rev E Company Confidential 25-62-38 Page 10 of 54
List of Effective Pages
SUBJECT
PAGE
DATE
SUBJECT
PAGE
DATE
Title Page
1
5/13/22
28
12/17/20
Parts List
2
12/17/20
29
12/17/20
Notices
3
12/17/20
30
12/17/20
Table of Contents
4
12/17/20
31
12/17/20
List of Acronyms,
Abbreviations and Definitions
5
12/17/20
32
12/17/20
6
12/17/20
33
12/17/20
7
12/17/20
34
12/17/20
Record of Revisions
8
5/13/22
35
12/17/20
Service Bulletin List
9
12/17/20
Fault Isolation
36
12/17/20
List of Effective Pages
10
5/13/22
37
12/17/20
System Overview
11
12/17/20
Table 5 –Beacon Self-Test
Error Codes and
Troubleshooting Guides
38
12/17/20
Introduction
12
12/17/20
Table 6 –ELT Troubleshooting
Guide
39
12/17/20
13
12/17/20
40
12/17/20
Table 1 –Environmental
Categories
14
5/3/22
Installation and Removal
41
04/01/21
15
12/17/20
42
12/17/20
16
12/17/20
43
04/01/21
Description and Operation
17
12/17/20
Battery Preparation, Removal
and Replacement
44
12/17/20
18
12/17/20
45
12/17/20
19
12/17/20
46
12/17/20
20
12/17/20
Battery Replacement
47
04/01/21
Operation
21
12/17/20
Material or Equipment Return
48
12/17/20
22
12/17/20
Illustrated Parts List
49
12/17/20
Table 2 –Environmental and
Physical Specifications
23
12/17/20
50
12/17/20
Table 3 –Electrical
Specifications
24
12/17/20
Table 7 –Main Assembly
Components
51
12/17/20
Test and Fault Isolation
Table 4 –ELT Inspection and
Checklist
25
12/17/20
Appendix A –ELT Registration
52
12/17/20
26
12/17/20
53
12/17/20
27
12/17/20
Appendix B –Return Material
Authorization (RMA) Form
54
12/17/20

ARTEX PRODUCTS / ACR ELECTRONICS, INC.
DESCRIPTION, OPERATION, INSTALLATION AND MAINTENANCE MANUAL
ARTEX ELT 4000S
Y1-03-0364 Rev E Company Confidential 25-62-38 Page 11 of 54
System Overview
Cospas-Sarsat System
406 MHz beacons transmit a distress signal to Search and Rescue (SAR) organizations, via the
Cospas-Sarsat satellite system. The purpose of these beacons is to aid SAR teams in tracking
and locating the beacon’s transmissions as rapidly as possible.
Figure 1
This satellite system was established by and continues to be supported by its primary
benefactors - USA, Russia, Canada and France.
When a 406 MHz beacon is activated, the digital distress message is transmitted to Cospas-
Sarsat satellites which, in turn, relay this message to reach the SAR Authorities. Additional
information about the beacon is accessed by SAR from the beacon registration database. At
the same time the 406 MHz signal is activated, the 121.5/243 MHz signals are turned on. The
121.5/243 MHz signals are used by SAR to home in on the beacon, as they approach it.
Your beacon has a GPS receiver onboard. This feature allows the beacon to acquire current
location coordinates from the GPS satellite constellation if the beacon has clear view to the
sky. The coordinates are added to the ID (UIN) of the beacon which is transmitted with the
406 MHz signal.
In the event that the beacon does not have clear view to the sky and the GPS receiver is
obscured, the 406 MHz signal is still detected by multiple satellites and from that information
the location of the beacon can also be calculated to an accuracy of less than 4.6 km (2.5
nmi).

ARTEX PRODUCTS / ACR ELECTRONICS, INC.
DESCRIPTION, OPERATION, INSTALLATION AND MAINTENANCE MANUAL
ARTEX ELT 4000S
Y1-03-0364 Rev E Company Confidential 25-62-38 Page 12 of 54
Introduction
Manual Usage
A. General
1) This manual describes the operation, installation, and maintenance of the ARTEX ELT
4000 Survival (S) emergency locator transmitter (ELT). The information is provided to
ensure initial and continued airworthiness. Information presented in this manual is
accurate at the time of printing but is subject to change. Refer to the ARTEX web site
at acrartex.com for the latest information and any updates to this manual.
2) Information on the Cospas-Sarsat emergency locator beacon registration requirements
and procedures is provided in Appendix A –ELT Registration.
3) Web links provided in this manual were accurate at time of printing but may be
subject to change.
4) ACR Electronics, Inc. reserves the right to add approved components to the ELT
system; including but not limited to antennas, remote switches and coaxial cables, if
applicable. These changes are approved as “minor changes” pursuant to FAR 21,
Subpart O for TSO holders.
5) Regulatory references contained herein are generally confined to web links provided in
this manual. These were accurate at time of printing but may be subject to change.
Consult your national aviation authority for applicable requirements.
B. Application
1) This manual constitutes supporting data/documentation for the ARTEX ELT 4000S,
including:
a) Illustrated Parts List
b) Description and Operation
c) Test and Fault Isolation
d) Troubleshooting
e) Specifications
f) Registration
2) Consult your national aviation authority for applicable requirements.
3) In the United States, the ARTEX ELT 4000S must be installed and maintained in
accordance with the requirements herein, as well as any CFR and FAR Parts as
applicable.
4) In Canada, the ARTEX ELT 4000S must be installed and maintained in accordance with
the requirements herein as well as Canadian Aviation Regulations (CAR) as applicable.
5) ARTEX ELT 4000S installation and maintenance in all other countries must comply with
the requirements herein as well as applicable national airworthiness requirements. In
the absence of any inspection requirements from national regulatory authorities,
operators should follow the annual inspection procedures outlined in Inspection and
Test Procedures on page 24 of this manual.
6) To ensure proper operation, only parts listed in the Illustrated Parts List of this manual
or those recommended by ACR Electronics, Inc. may be used as replacement parts for
the ARTEX ELT 4000S.

ARTEX PRODUCTS / ACR ELECTRONICS, INC.
DESCRIPTION, OPERATION, INSTALLATION AND MAINTENANCE MANUAL
ARTEX ELT 4000S
Y1-03-0364 Rev E Company Confidential 25-62-38 Page 13 of 54
Model Description
A. ELT 4000S
1) The ARTEX ELT 4000S is a CLASS 2 Survival (S) beacon which transmits on 121.5 and
406.031 MHz.
Approvals
A. ELT
1) FAA TSO C126b
a) This article meets the minimum performance and quality control standards
required by a technical standard order (TSO). Installation of this article requires
separate approval.
2) Transport Canada –(As per FAA/TC bilateral agreement)
3) Industry Canada
4) EASA –(As per FAA/EASA bilateral agreement)
5) Cospas-Sarsat
B. Battery
ELT 4000S Battery system requires no TSO certification. The battery is based on alkaline
cells and individual battery cell certification is limited to UL and CE standards. ELT 4000S
battery system is not considered Hazmat but should be disposed of within the guidelines
of your local authority.
NOTE: The conditions and tests 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 the 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 the applicable airworthiness requirements.
To find an authorized service center, go to
acrartex.com/support/dealer-locator/dealer-locator-url

ARTEX PRODUCTS / ACR ELECTRONICS, INC.
DESCRIPTION, OPERATION, INSTALLATION AND MAINTENANCE MANUAL
ARTEX ELT 4000S
Y1-03-0364 Rev E Company Confidential 25-62-38 Page 14 of 54
C. RTCA DO-160G Compliance
1) DO-160G Environmental Categories:
[F1]BB[204B][S(C)R(C1)]XRXXFSAXXX[CWX]RM[XXXXXX][XXXX]XAC
2) The DO-160G environmental categories breakdown is detailed in Table 1 below.
Table 1 Environmental Categories
Category
Section
Description
Comments
F1
4.0
Temperature/Altitude
-20 °C to +55 °C, Altitude
+55,000 ft.
B
5.0
Temperature Variation
B = 5°C/min
B
6.0
Humidity
10 cycles
DO-204B
7.0
Operational Shocks and
Crash Safety
50 G’s and 100 G’s, ED-62A/DO-
204B in lieu of RTCA DO-160G
test
[S(C)R(C1)]
8.0
Vibration
X
9.0
Explosion Atmosphere Test
Not Applicable
R
10.0
Waterproofness
Spray
X
11.0
Fluid Susceptibility
Not Applicable
X
12.0
Sand and Dust
Not Applicable
F
13.0
Fungus Resistance Test
Not Applicable
S
14.0
Salt Fog
2 cycles
A
15.0
Magnetic Effect Test
X
16.0
Power Input Test
Not Applicable
X
17.0
Voltage Spikes
Not Applicable
X
18.0
AF Susceptibility
Not Applicable
CWX
19.0
Induced Signal
Susceptibility
Tested to CW Category
R
20.0
RF Susceptibility
M
21.0
RF Emissions
[XXXXX]
22.0
Lightning Induced Transient
Susceptibility
Not Applicable
[XXXX]
23.0
Lightning Direct Effects
Not Applicable
X
24.0
Icing Test
Not Applicable
A
25.0
Electrostatic Discharge Test
10 pos + 10 neg tests at 15KV
C
26.0
Flammability
Fire Resistance
RTCA DO-204B
Conditions
Categories
Section
Operational Shock
6 G’s
Para. 4.5.9 DO-204B
Crash Safety
100 G’s 23 ms
Para 4.5.9-4 DO-204B
Flame Test
Para 4.5.13
Impact
Para 4.5.10
Crush
Para 4.5.12

ARTEX PRODUCTS / ACR ELECTRONICS, INC.
DESCRIPTION, OPERATION, INSTALLATION AND MAINTENANCE MANUAL
ARTEX ELT 4000S
Y1-03-0364 Rev E Company Confidential 25-62-38 Page 15 of 54
Frequency Allocation
A. Application
1) This section addresses the 406.0 - 406.1 MHz transmitter frequencies which are
assigned to the distress frequency band.
B. Discussion
1) The product identification label on each ELT specifies the transmission frequencies of
the individual ELT. The ARTEX ELT 4000S transmits a frequency of 406.031 MHz.
Allocation of frequencies, based on beacon population per specified frequency band,
are controlled by Cospas-Sarsat.
2) The frequency references throughout this manual for the 406 MHz component should
be considered the baseline and the specific frequency indicated on the ELT product
label should be substituted.
References
A. Regulatory Documents
1) The following regulatory documents are referred to herein. When referring to such
documents, it is the manual user’s responsibility to ensure they are using the latest
revision or release of such documents. To that end, the revision designator of specific
document numbers has not been included, with the exception of the RTCA document
listing, which reflects the revision level of the documents at the time of TSO testing
and certification.
2) Except in the case of a printed manual, reference documents available online or source
locations are linked to applicable web sites.
3) United States
a) AC 43-9, “Maintenance Records”
b) AC 43-210, “Standardized Procedures for Requesting Field Approval of Data, Major
Alterations, and Repairs”
c) AC 43.9-1, “Instructions for Completion of FAA Form 337”
d) AC 43.13-1, “Acceptable Methods, Techniques, and Practices – Aircraft Inspection
and Repair”
e) AC 43.13-2, “Acceptable Methods, Techniques, and Practices - Aircraft Alterations”
f) CFR Title 47, Part 87, “Aviation Services”
g) FAR, Part 43, “Maintenance, Preventive Maintenance, Rebuilding, and Alteration”
h) FAR, Part 91, “General Operating and Flight Rules”
i) TSO-C126b, “406 MHz Emergency Locator Transmitter (ELT)”
4) Canada
a) CAR, Part V, “Airworthiness”
b) CAR, Part VI, “General Operating and Flight Rules”
5) COSPAS-SARSAT
a) C/S G.005, “Cospas-Sarsat Guidelines on 406 MHz Beacon Coding, Registration and
Type Approval”

ARTEX PRODUCTS / ACR ELECTRONICS, INC.
DESCRIPTION, OPERATION, INSTALLATION AND MAINTENANCE MANUAL
ARTEX ELT 4000S
Y1-03-0364 Rev E Company Confidential 25-62-38 Page 16 of 54
b) C/S S.007, “Handbook of Beacon Regulations”
6) RTCA –The following documents are available for purchase at RTCA’s Web Site,
www.rtca.org, or by mail:
a) DO-160G, “Environmental Conditions and Test Procedures for Airborne Equipment”
b) DO-178C, “Software Considerations in Airborne Systems and Equipment
Certification”
c) DO-182, “Emergency Locator Transmitter (ELT) Equipment Installation and
Performance”
d) DO-204B, “Minimal Operational Performance Standards for 406 MHz Emergency
Locator Transmitters (ELT)”
B. Other Documents
1) The ARTEX model beacon programmer or beacon test set operating manuals are
available online at the ACR products web site at acrartex.com, or from ACR
Electronics, Inc. upon request:
a) Document number Y1-03-0272-2, “8700/8707/A3-06-2824 Handheld Programmer
Operations Manual”
b) Document number Y1-03-0273, “8701/8708/A3-06-2825 Handheld Programmer
ELT Test Set Operations Manual”

ARTEX PRODUCTS / ACR ELECTRONICS, INC.
DESCRIPTION, OPERATION, INSTALLATION AND MAINTENANCE MANUAL
ARTEX ELT 4000S
Y1-03-0364 Rev E Company Confidential 25-62-38 Page 17 of 54
Description and Operation
Description
A. Functional Overview
1) The Survival ELT activates via the manual switch or automatically activates upon
contact with fresh or salt water.
2) A continuous standard sweep tone on 121.5 MHz is emitted. Approximately every 50
seconds, the 406 transmitter turns on for up to 520ms (‘long message’ protocol).
3) During that time, an encoded digital message is sent to the COSPAS-SARSAT Search
and Rescue satellite system. The message length may be shorter for certain message
formats.
4) The 406 MHz transmitter will operate for 24 hours and then shuts down
automatically. The 121.5 MHz transmitter will continue to operate until the batteries
are exhausted, which is at least 50 hours.
5) The GNSS receiver will acquire position and update 406 messages accordingly.
6) The ELT transmits a digital message that allows search and rescue authorities to
contact the owner/operator of the aircraft through information contained in a
database.
The information contained in the database includes:
a) Type of aircraft and aircraft registration number
b) Owner address and telephone number
c) Alternate emergency contact
7) After the ELT is activated and the 406 MHz signal is detected by the SAR satellite
system, a position is calculated. The 121.5 MHz transmissions can be used to home in
on the crash site.
8) Aircraft communications transceivers are not capable of receiving 406 MHz
transmissions; therefore, the only methods of monitoring the ELT are one or more of
the following:
1. The blinking LED
2. The buzzer
3. 121.5 MHz transmissions, which can be monitored using the aircraft
communications transceiver tuned to 121.5 MHz or an AM broadcast receiver
held near the antenna.
Functional check:
A monthly functional check is recommended to verify operational status of the ELT.
NOTE: Please be aware that if the beacon should get wet, it WILL activate.

ARTEX PRODUCTS / ACR ELECTRONICS, INC.
DESCRIPTION, OPERATION, INSTALLATION AND MAINTENANCE MANUAL
ARTEX ELT 4000S
Y1-03-0364 Rev E Company Confidential 25-62-38 Page 18 of 54
B. System Components
1) The ARTEX ELT 4000S is made of a high impact, fire resistant, polycarbonate
plastic case.
Figure 2 ELT 4000S
Flexible
antenna
Flotation
line
Red LED
Green LED
Three-position momentary
toggle switch:
•“ON” (away from
antenna)
•“OFF”(middle
position)
•“TEST/ARM”
(towards the
antenna)
Push-to-Test
Switch

ARTEX PRODUCTS / ACR ELECTRONICS, INC.
DESCRIPTION, OPERATION, INSTALLATION AND MAINTENANCE MANUAL
ARTEX ELT 4000S
Y1-03-0364 Rev E Company Confidential 25-62-38 Page 19 of 54
Figure 3 4000S Battery Pack
2) It is mounted in a metal bracket.
Figure 4 ELT 4000S and Bracket
Connection
from Battery
to ELT 4000S

ARTEX PRODUCTS / ACR ELECTRONICS, INC.
DESCRIPTION, OPERATION, INSTALLATION AND MAINTENANCE MANUAL
ARTEX ELT 4000S
Y1-03-0364 Rev E Company Confidential 25-62-38 Page 20 of 54
Operation
C. Overview
1) A primary feature of the ARTEX ELT 4000S is its simplicity of operation.
2) Water sensing contacts are located on the sides of the beacon which allow for
activation of the beacon if it is deployed in water. The toggle switch must be in the
“ARM” position to allow the water sense activation. When the beacon switch is in the
“ARM” position, the ELT can be manipulated with the possibility of water sense
activation.
3) Activation is indicated by the presence of the swept audio tone transmitting on the
121.5 MHz signal, the buzzer sounding, and the flashing ELT LED. All these indicators
immediately start upon ELT activation.
NOTE: If activated manually by the ELT switch or water sensor, the 121.5 MHz swept
audio tone and first 406 MHz transmission will not occur until approximately 50
seconds have elapsed, allowing time to deactivate before an emergency
transmission is sent.
4) To completely deactivate the ELT, change the position of the ELT toggle switch from
“ON” or “ARM” to “OFF” position. With the toggle switch in the “OFF” position, the
beacon cannot be activated by manipulating it with wet hands, placing it in a wet area,
or shorting wet sense contacts.
5) To TURN OFF the beacon:
a) Move the position of the ELT toggle switch from “ON” to “OFF” position.
b) If the beacon has been activated by water immersion, removing the ELT from the
water will cause the beacon to automatically TURN OFF after 10 seconds. Also,
move the position of the ELT toggle switch from “ARM” to “OFF” position.
c) If the push button is activated by accident, interrupt Self-Test/GNSS Test by
moving the position of the ELT toggle switch from “ARM” to “OFF” position.
NOTE: Notice that the toggle switch has to move again to the “ARM” position or the
beacon will remain completely deactivated. In the “OFF” position, the beacon is
completely disabled.
6) A warning buzzer is required by TSO C126b to indicate ELT activation. The buzzer is
powered by the ELT. No aircraft power is required for operation. The indicator “beeps”
periodically, with the periods between pulses increasing after 12 hours.
D. Normal Operation
1) In normal operation, the ELT is “ready to activate”. Deploy the antenna from the stowed
state to the upright state. The toggle switch must be in the “ARM” position. That allows
the beacon to be activated through the water sensor. In this condition, if the ELT drops
and remains in water, the beacon will be activated.