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ACR Electronics ME406 Series Abbreviated Component Maintenance Manual

Emergency locator transmitter
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Emergency Locator Transmitter
Abbreviated Component Maintenance Manual
This manual includes data for the equipment that follows:
Component
Emergency Locator Transmitter
Emergency Locator Transmitter
ME406 Series
Part No.
453-6603
453-6604
25-62-30
Model No.
ME406
ME406HM
Wulfsberg Electronics Division
6400 Wilkinson Rd., Prescott, AZ 86301
Cage Code: 1B7G3
570-1600 Rev. J
Initial Issue JUN 30/2005
Page 1 of 88
APR 06/10

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Summary of Contents for ACR Electronics ME406 Series

  • Page 1 ME406 Series Emergency Locator Transmitter Abbreviated Component Maintenance Manual This manual includes data for the equipment that follows: Component Part No. Model No. Emergency Locator Transmitter 453-6603 ME406 Emergency Locator Transmitter 453-6604 ME406HM Wulfsberg Electronics Division 6400 Wilkinson Rd., Prescott, AZ 86301...
  • Page 2 COBHAM AVIONICS WULFSBERG ELECTRONICS ABBREVIATED COMPONENT MAINTENANCE MANUAL ME406 (453-6603), ME406HM (453-6604) 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 Wulfsberg Electronics. Information in this manual is subject to change without notice.

  • Page 3: Record Of Revisions

    COBHAM AVIONICS WULFSBERG ELECTRONICS ABBREVIATED COMPONENT MAINTENANCE MANUAL ME406 (453-6603), ME406HM (453-6604) RECORD OF REVISIONS REVISION CHANGE DATE REVISION CHANGE DATE RELEASE Jun 30/2005 DCN 2670 Nov 17/2005 DCN 2777 May 01/2006 DCN 2847 Aug 21/2006 DCN 3007 May 21/2007 DCN 3076 Sep 27/2007 DCN 3182...
  • Page 4 COBHAM AVIONICS WULFSBERG ELECTRONICS ABBREVIATED COMPONENT MAINTENANCE MANUAL ME406 (453-6603), ME406HM (453-6604) THIS IS A BLANK PAGE 25-62-30 Page 4 of 88 APR 06/10...

  • Page 5: Service Bulletin List

    COBHAM AVIONICS WULFSBERG ELECTRONICS ABBREVIATED COMPONENT MAINTENANCE MANUAL ME406 (453-6603), ME406HM (453-6604) SERVICE BULLETIN LIST SERVICE ISSUE MANUAL MANUAL SUBJECT BULLETIN NO DATE REV NO REV DATE 25-62-30 Page 5 of 88 APR 06/10...
  • Page 6 COBHAM AVIONICS WULFSBERG ELECTRONICS ABBREVIATED COMPONENT MAINTENANCE MANUAL ME406 (453-6603), ME406HM (453-6604) THIS IS A BLANK PAGE 25-62-30 Page 6 of 88 APR 06/10...

  • Page 7: List Of Effective Pages

    COBHAM AVIONICS WULFSBERG ELECTRONICS ABBREVIATED COMPONENT MAINTENANCE MANUAL ME406 (453-6603), ME406HM (453-6604) LIST OF EFFECTIVE PAGES SUBJECT PAGE DATE SUBJECT PAGE DATE Title Page Apr 06/10 Description and Operation Apr 06/10 Notices Apr 06/10 (cont.) Apr 06/10 Record of Revisions Apr 06/10 Apr 06/10 BLANK...
  • Page 8 COBHAM AVIONICS WULFSBERG ELECTRONICS ABBREVIATED COMPONENT MAINTENANCE MANUAL ME406 (453-6603), ME406HM (453-6604) SUBJECT PAGE DATE SUBJECT PAGE DATE Installation Apr 06/10 Appendix A Apr 06/10 (cont.) Apr 06/10 Apr 06/10 Apr 06/10 Illustrated Parts List Apr 06/10 Apr 06/10 Apr 06/10 Apr 06/10 Apr 06/10 Apr 06/10...

  • Page 9: Table Of Contents

    COBHAM AVIONICS WULFSBERG ELECTRONICS ABBREVIATED COMPONENT MAINTENANCE MANUAL ME406 (453-6603), ME406HM (453-6604) TABLE OF CONTENTS RECORD OF REVISIONS ............3 SERVICE BULLETIN LIST.
  • Page 10 COBHAM AVIONICS WULFSBERG ELECTRONICS ABBREVIATED COMPONENT MAINTENANCE MANUAL ME406 (453-6603), ME406HM (453-6604) C. Antennas ............33 Table 4.
  • Page 11 COBHAM AVIONICS WULFSBERG ELECTRONICS ABBREVIATED COMPONENT MAINTENANCE MANUAL ME406 (453-6603), ME406HM (453-6604) INSTALLATION 1. Regulatory Requirements and Guidelines ......... 53 A.
  • Page 12 COBHAM AVIONICS WULFSBERG ELECTRONICS ABBREVIATED COMPONENT MAINTENANCE MANUAL ME406 (453-6603), ME406HM (453-6604) APPENDIX A – ELT REGISTRATION 1. Background Information ........... . 79 A.

  • Page 13: List Of Figures

    ME406 Series ELT and Mounting Tray Assembly ....... . .
  • Page 14 COBHAM AVIONICS WULFSBERG ELECTRONICS ABBREVIATED COMPONENT MAINTENANCE MANUAL ME406 (453-6603), ME406HM (453-6604) THIS IS A BLANK PAGE 25-62-30 Page 14 of 88 APR 06/10...

  • Page 15: Introduction

    Installation Registration Illustrated Parts List In the United States, the ME406 Series ELT must be installed and maintained in accordance with the requirements herein and 14 CFR, FAR Parts 43, and 91; and other airworthiness requirements, as applicable. In Canada, the ME406 Series ELT must be installed and maintained in accordance with the requirements herein and Canadian Aviation Regulations (CAR), Part V, Paragraph 551.104 and...

  • Page 16: Model Descriptions

    ABBREVIATED COMPONENT MAINTENANCE MANUAL ME406 (453-6603), ME406HM (453-6604) ME406 Series ELT installation and maintenance in all other countries must comply with the requirements herein and applicable national airworthiness requirements. The accessories (i.e., remote switch and antennas) addressed in this manual are the accessories most commonly associated with the ME406 Series ELT.

  • Page 17: Approvals

    LITHIUM BATTERY SAFETY CONCERNS INCLUDE THE POSSIBILITY OF FIRE, VENTING VIOLENTLY, AND VENTING OF TOXIC GASES. The lithium battery pack used on the ME406 Series ELT is certified under TSO C126. NOTE: Details of TSO certification are available in the “452-6499 - ME406 Lithium Battery Pack TSO C142 Report”...

  • Page 18: Table 1. Environmental Categories Breakdown

    COBHAM AVIONICS WULFSBERG ELECTRONICS ABBREVIATED COMPONENT MAINTENANCE MANUAL ME406 (453-6603), ME406HM (453-6604) Table 1. Environmental Categories Breakdown CATEGORY SECTION DESCRIPTION Temperature/Altitude 4.5.4 In-Flight Loss of Cooling Temperature Variation Humidity 7.0/8.0 Operational Shock and Crash Safety/Vibration Explosion 10.0 Waterproofness 11.0 Fluids Susceptibility 12.0 Sand and Dust 13.0...

  • Page 19: Frequency Allocations

    SUBTASK 25-62-30-990-002 Discussion The 406 MHz transmitter frequency of the ME406 Series ELT was originally 406.028 MHz. In order to comply with COSPAS-SARSAT frequency allocation requirements, changes to the 406 MHz frequency may occur since the original release of this product.

  • Page 20: List Of Acronyms, Abbreviations, And Definitions

    COBHAM AVIONICS WULFSBERG ELECTRONICS ABBREVIATED COMPONENT MAINTENANCE MANUAL ME406 (453-6603), ME406HM (453-6604) TASK 25-62-30-990-805 5. List of Acronyms, Abbreviations, and Definitions SUBTASK 25-62-30-990-001 Term Definition Advisory Circular – A Federal Aviation Administration (USA) bulletin with special information. For the purposes of this document, the acro- nym AC does not refer to electrical alternating current.
  • Page 21 COBHAM AVIONICS WULFSBERG ELECTRONICS ABBREVIATED COMPONENT MAINTENANCE MANUAL ME406 (453-6603), ME406HM (453-6604) or electromagnetic radiation emitted from an external source. Also called radio frequency interference or RFI. EUROCAE European Organization for Civil Aviation Equipment – EUROCAE docu- ments are widely referenced as a means of compliance to European Technical Standard Orders (ETSOs) and other regulatory documents.
  • Page 22 COBHAM AVIONICS WULFSBERG ELECTRONICS ABBREVIATED COMPONENT MAINTENANCE MANUAL ME406 (453-6603), ME406HM (453-6604) RTCA Radio Technical Commission for Aeronautics – Organization that makes recommendations for airworthiness. Refer to http:// www.rtca.org/aboutrtca.asp for more information. A rubbery silicon-based adhesive typically used to prevent vibration problems and water intrusion.

  • Page 23: References

    COBHAM AVIONICS WULFSBERG ELECTRONICS ABBREVIATED COMPONENT MAINTENANCE MANUAL ME406 (453-6603), ME406HM (453-6604) TASK 25-62-30-990-806 6. References SUBTASK 25-62-30-990-001 Regulatory Documents 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.

  • Page 24: Other Documents

    COBHAM AVIONICS WULFSBERG ELECTRONICS ABBREVIATED COMPONENT MAINTENANCE MANUAL ME406 (453-6603), ME406HM (453-6604) DO-183, “Minimal Operational Performance Standards for Emergency Locator Transmitters - Automatic Fixed-ELT (AF), Automatic Portable-ELT (AP), Automatic Deployable-ELT (AD), Survival-ELT (S) Operating on 121.5 and 243.0 MHz” DO-204, “Minimal Operational Performance Standards for 406 MHz Emergency Locator Transmitters (ELT)”...

  • Page 25: Description And Operation

    COBHAM AVIONICS WULFSBERG ELECTRONICS ABBREVIATED COMPONENT MAINTENANCE MANUAL ME406 (453-6603), ME406HM (453-6604) DESCRIPTION AND OPERATION TASK 25-62-30-870-801 1. Description SUBTASK 25-62-30-870-001 Functional Overview The ELT automatically activates during a crash and transmits the standard sweep tone on 121.5 MHz. Approximately every 50 seconds, for up to 520 milliseconds (long message protocol), the 406 MHz transmitter turns on.

  • Page 26: Components

    SUBTASK 25-62-30-870-002 Components The ME406 Series ELT main assembly is housed in a high impact, fire resistant, polycarbonate plastic case and mounted in a tray made of similar material. See "Figure 2. ME406 Series ELT and Mounting Tray Assembly". NOTE:...

  • Page 27: Figure 3. Remote Switch Front View

    Buzzer". Figure 4. Buzzer The battery pack for the ME406 Series ELT consists of two “D” size lithium manganese dioxide cells connected in series. To prevent the cells from being charged, diodes are connected across each cell and fuses are connected to the output. See "Figure 5. Battery Pack Assembly".

  • Page 28: Figure 6. Antennas

    ABBREVIATED COMPONENT MAINTENANCE MANUAL ME406 (453-6603), ME406HM (453-6604) Two antennas are approved for use with the ME406 Series ELT. Selection of the proper antenna is dependent upon end use, aircraft configuration and speed, and other factors. See "Figure 6. Antennas".

  • Page 29: Operation

    Figure 7. ELT Operational Flow Diagram A primary feature of the ME406 Series ELT is its simplicity of operation. As long as the ELT is connected to the remote switch harness ELT connector, such that pins 5 and 12 are jumpered (G-switch loop), it will activate in the event of a crash.

  • Page 30: Normal Operation

    COBHAM AVIONICS WULFSBERG ELECTRONICS ABBREVIATED COMPONENT MAINTENANCE MANUAL ME406 (453-6603), ME406HM (453-6604) It is possible the primary G-switch or one of the auxiliary G-switches could activate the ELT in either a fixed or rotor wing aircraft as the result of severe maneuvers or a very hard landing.

  • Page 31: Specifications

    TASK 25-62-30-870-803 3. Specifications SUBTASK 25-62-30-870-001 Environmental and Physical Table 2 lists the environmental and physical specifications of the ME406 Series ELT. NOTE: For automatic activation, the higher threshold of 4.5 ft/sec (2.3 ) is specified in accordance with Eurocae ED-62. Use of the higher threshold crash sensor has been approved by the FAA as a deviation to TSO C126 (FAA Reference #98-130S-108, February 6, 1998).

  • Page 32: Electrical

    COBHAM AVIONICS WULFSBERG ELECTRONICS ABBREVIATED COMPONENT MAINTENANCE MANUAL ME406 (453-6603), ME406HM (453-6604) SUBTASK 25-62-30-870-002 Electrical Table 3 lists the electrical specifications of the ME406 Series ELT. Table 3. Electrical Specifications CRITERIA PARAMETER CHARACTERISTIC 406.028 MHz, or higher ± 1 KHz Operating Frequencies 121.5 MHz...

  • Page 33: Antennas

    COBHAM AVIONICS WULFSBERG ELECTRONICS ABBREVIATED COMPONENT MAINTENANCE MANUAL ME406 (453-6603), ME406HM (453-6604) SUBTASK 25-62-30-870-003 Antennas Table 4 lists the specifications of the antennas approved for use with the ME406 Series ELT. Table 4. Antenna Specifications CHARACTERISTIC PARAMETERS 110-338 110-773 Style...
  • Page 34 COBHAM AVIONICS WULFSBERG ELECTRONICS ABBREVIATED COMPONENT MAINTENANCE MANUAL ME406 (453-6603), ME406HM (453-6604) THIS IS A BLANK PAGE 25-62-30 Page 34 of 88 APR 06/10...

  • Page 35: Test And Fault Isolation

    COBHAM AVIONICS WULFSBERG ELECTRONICS ABBREVIATED COMPONENT MAINTENANCE MANUAL ME406 (453-6603), ME406HM (453-6604) TEST AND FAULT ISOLATION TASK 25-62-30-750-801 1. Inspection and Test Regulatory Requirements SUBTASK 25-62-30-990-001 United States In accordance with FAR Part 91, Subpart C, § 91.207 (d), the ELT must be inspected within 12 calendar months after the last inspection for: Proper installation;...

  • Page 36: Other Countries

    COBHAM AVIONICS WULFSBERG ELECTRONICS ABBREVIATED COMPONENT MAINTENANCE MANUAL ME406 (453-6603), ME406HM (453-6604) SUBTASK 25-62-30-990-003 Other Countries For all other countries, maintenance and testing shall be conducted in accordance with the requirements of applicable national regulatory authorities and the requirements herein, as applicable.

  • Page 37: Inspection And Test Procedures

    COBHAM AVIONICS WULFSBERG ELECTRONICS ABBREVIATED COMPONENT MAINTENANCE MANUAL ME406 (453-6603), ME406HM (453-6604) TASK 25-62-30-750-802 2. Inspection and Test Procedures SUBTASK 25-62-30-990-001 Checklist Table 5 provides a list of the ELT inspection and testing requirements, a copy of which may be used as a checklist to verify inspection and test completion.

  • Page 38: Preparation

    COBHAM AVIONICS WULFSBERG ELECTRONICS ABBREVIATED COMPONENT MAINTENANCE MANUAL ME406 (453-6603), ME406HM (453-6604) SUBTASK 25-62-30-000-001 Preparation Remove the ELT in accordance with SUBTASK 25-62-30-010-001, on page 49. Remove the battery pack in accordance with SUBTASK 25-62-30-050-001, on page 50. SUBTASK 25-62-30-220-001 Coax Cable and Wiring Connections Inspection –...

  • Page 39: G-Switch Functional Check - Item 4

    COBHAM AVIONICS WULFSBERG ELECTRONICS ABBREVIATED COMPONENT MAINTENANCE MANUAL ME406 (453-6603), ME406HM (453-6604) When the total of all known transmissions exceeds one hour; or On or before battery replacement (expiration) date. SUBTASK 25-62-30-750-001 G-Switch Functional Check – Item 4 CAUTION: A JUMPER IS REQUIRED TO PERFORM THIS CHECK. DUE TO THE POTENTIAL OF PHYSICAL DAMAGE IF THE JUMPER IS IMPROPERLY INSTALLED, THIS STEP SHOULD ONLY BE PERFORMED BY AN EXPERIENCED TECHNICIAN/MECHANIC.

  • Page 40: 121.5 Mhz Frequency Measurement - Item 5A

    COBHAM AVIONICS WULFSBERG ELECTRONICS ABBREVIATED COMPONENT MAINTENANCE MANUAL ME406 (453-6603), ME406HM (453-6604) Place the ELT in a container or screen room capable of substantially attenuating RF signals, or the transmitter power output shall be connected to a suitable dummy load to minimize radiation.

  • Page 41: 121.5 Mhz Power Output Measurement - Item 5C

    COBHAM AVIONICS WULFSBERG ELECTRONICS ABBREVIATED COMPONENT MAINTENANCE MANUAL ME406 (453-6603), ME406HM (453-6604) SUBTASK 25-62-30-750-005 121.5 MHz Power Output Measurement – Item 5c Connect the measuring device, referring to SUBTASK 25-62-30-750-002, on page 39. Activate the ELT, if necessary, by placing the control switch in the “ON” position. Wait three minutes.

  • Page 42: Current Draw Test - Item 5F

    COBHAM AVIONICS WULFSBERG ELECTRONICS ABBREVIATED COMPONENT MAINTENANCE MANUAL ME406 (453-6603), ME406HM (453-6604) SUBTASK 25-62-30-750-008 M. Current Draw Test – Item 5f CAUTION: EXERCISE EXTREME CAUTION TO AVOID CAUSING A SHORT CIRCUIT CONDITION, WHICH WILL BLOW THE FUSES IN THE BATTERY PACK. THIS TEST SHOULD ONLY BE PERFORMED BY AN EXPERIENCED TECHNICIAN/MECHANIC.

  • Page 43: Digital Message Verification - Item 5G

    COBHAM AVIONICS WULFSBERG ELECTRONICS ABBREVIATED COMPONENT MAINTENANCE MANUAL ME406 (453-6603), ME406HM (453-6604) Read the current draw on the ammeter. Measured current must be  2 µA (micro-amps). Set the ammeter range to accommodate at least 5 A. Activate the ELT by placing the control switch in the “ON” position. Allow the ELT to transmit a 406 MHz burst, which occurs about 50 seconds after activation.

  • Page 44: Elt Reset Check - Item 5H

    COBHAM AVIONICS WULFSBERG ELECTRONICS ABBREVIATED COMPONENT MAINTENANCE MANUAL ME406 (453-6603), ME406HM (453-6604) Repeat the activation and deactivation cycle if the ETS fails to read the message on the initial try. The 406 MHz oscillator may not be warmed up. If continued attempts to read the message fail, check for self-test error codes and refer to Table 6, on page 46.

  • Page 45: Antenna Test - Item 7

    COBHAM AVIONICS WULFSBERG ELECTRONICS ABBREVIATED COMPONENT MAINTENANCE MANUAL ME406 (453-6603), ME406HM (453-6604) Verify the buzzer sounds immediately upon activation. Return the cockpit remote switch to the “ARM” (off) position while paying close attention to LED activity when the ELT enters the “ARM” condition. If the ELT is working properly, the LED will stay on for approximately 1 second and then turn off.

  • Page 46: Fault Isolation

    COBHAM AVIONICS WULFSBERG ELECTRONICS ABBREVIATED COMPONENT MAINTENANCE MANUAL ME406 (453-6603), ME406HM (453-6604) TASK 25-62-30-810-801 3. Fault Isolation SUBTASK 25-62-30-810-001 Self-Test Error Troubleshooting Guidelines Table 6 describes the ELT self-test LED error codes (i.e., flash codes), their probable causes, and possible solutions. The 5-flash error is not present when the ELT is programmed with a serial user protocol (short message).
  • Page 47 COBHAM AVIONICS WULFSBERG ELECTRONICS ABBREVIATED COMPONENT MAINTENANCE MANUAL ME406 (453-6603), ME406HM (453-6604) CODE PROBABLE CAUSE POSSIBLE SOLUTION Indicates 406 or 121.5 MHz output power is low Check coax cable and connections Open or short condition on antenna output or coax cable Check antenna for proper installation 4-Flash Lengthen or shorten antenna coax cable...

  • Page 48: Elt Troubleshooting Guidelines

    COBHAM AVIONICS WULFSBERG ELECTRONICS ABBREVIATED COMPONENT MAINTENANCE MANUAL ME406 (453-6603), ME406HM (453-6604) SUBTASK 25-62-30-810-002 ELT Troubleshooting Guidelines Table 7 provides ELT troubleshooting guidelines for installation and operational issues. Table 7. ELT Troubleshooting Guide SYMPTOM PROBABLE CAUSE POSSIBLE SOLUTION Improper wiring Verify wiring Remote switch LED always on Check for frayed insulation...

  • Page 49: Removal

    COBHAM AVIONICS WULFSBERG ELECTRONICS ABBREVIATED COMPONENT MAINTENANCE MANUAL ME406 (453-6603), ME406HM (453-6604) REMOVAL TASK 25-62-30-010-801 1. ELT SUBTASK 25-62-30-010-001 ELT Removal See "Figure 11. ELT Removal Sequence". NOTE: Coax cable and wiring harness not ELT MAIN shown for clarity. ASSEMBLY DISCONNECT HARNESS DISCONNECT COAX UNDO VELCRO STRAP...

  • Page 50: Battery

    COBHAM AVIONICS WULFSBERG ELECTRONICS ABBREVIATED COMPONENT MAINTENANCE MANUAL ME406 (453-6603), ME406HM (453-6604) TASK 25-62-30-050-801 2. Battery SUBTASK 25-62-30-050-001 Battery Pack Removal CAUTION: THE BATTERY PACK CONTAINS ELECTROSTATIC DISCHARGE SENSITIVE (ESD) COMPONENTS AND IT MUST BE HANDLED WITH CARE. IF POSSIBLE, WEAR A GROUNDED WRIST STRAP WHEN HANDLING THE BATTERY PACK DURING INSTALLATION ACTIVITIES.

  • Page 51: Material Or Equipment Return

    COBHAM AVIONICS WULFSBERG ELECTRONICS ABBREVIATED COMPONENT MAINTENANCE MANUAL ME406 (453-6603), ME406HM (453-6604) TASK 25-62-30-500-801 3. Material or Equipment Return SUBTASK 25-62-30-510-001 Shipment Information If any material or equipment is to be returned to the factory, under warranty or otherwise, Wulfsberg Electronics must be notified prior to shipment with the following information: •...
  • Page 52 COBHAM AVIONICS WULFSBERG ELECTRONICS ABBREVIATED COMPONENT MAINTENANCE MANUAL ME406 (453-6603), ME406HM (453-6604) THIS IS A BLANK PAGE 25-62-30 Page 52 of 88 APR 06/10...

  • Page 53: Regulatory Requirements And Guidelines

    COBHAM AVIONICS WULFSBERG ELECTRONICS ABBREVIATED COMPONENT MAINTENANCE MANUAL ME406 (453-6603), ME406HM (453-6604) INSTALLATION TASK 25-62-30-410-801 1. Regulatory Requirements and Guidelines SUBTASK 25-62-30-990-001 TSO C126, Paragraph D TSO approval of the ELT does not constitute installation approval. All ELT installations are subject to field approval for a given airframe by either an approved FAA DER or FAA FSDO.

  • Page 54: Rtca

    COBHAM AVIONICS WULFSBERG ELECTRONICS ABBREVIATED COMPONENT MAINTENANCE MANUAL ME406 (453-6603), ME406HM (453-6604) SUBTASK 25-62-30-990-005 RTCA DO-204, § 3.1.8 guidelines for mounting a ELT: The ELT shall be mounted to primary aircraft load carrying structures, such as trusses, bulkheads, longerons, spars, or floor beams. The mounts shall have a maximum static local deflection no greater than 0.1 inches (2.5 mm) when a force of 100 lbs (450 newtons) is applied to the mount in the most flexible direction.

  • Page 55: Mounting Tray

    STRUCTURAL INTEGRITY OF THESE COMPONENTS. THESE SAME CHEMICAL AGENTS MAY ALSO CAUSE CORROSION OF ELECTRICAL CONNECTIONS. Select a suitable location for the ELT mounting tray. See "Figure 13. ME406 Series ELT Outline and Dimensions". Refer to these dimensions when determining mounting location.

  • Page 56: Installation

    Mark the four holes needed for mounting the tray, using the tray as a pattern. The hole pattern is also illustrated in "Figure 13. ME406 Series ELT Outline and Dimensions", on page 55. Drill the four mounting holes with a #19 or 4.25 mm drill.
  • Page 57 COBHAM AVIONICS WULFSBERG ELECTRONICS ABBREVIATED COMPONENT MAINTENANCE MANUAL ME406 (453-6603), ME406HM (453-6604) Install the mounting tray with the hardware supplied in the installation kit (455-7423), as shown in "Figure 14. Typical Mounting Tray Installation". NOTE: The use of substitute mounting hardware is acceptable provided the hardware used meets or exceeds the strength and corrosion resistance of the original hardware.

  • Page 58: Antenna

    SUBTASK 25-62-30-990-001 Selection Use only antennas approved for use with the ME406 Series ELT. The ELT will not work properly without being connected to an antenna for which it was designed. Verify the antenna selected matches the requirements of the specific installation.

  • Page 59: Figure 15. Rod Antenna 110-338 And Whip Antenna 110-773 Outlines And Dimensions

    COBHAM AVIONICS WULFSBERG ELECTRONICS ABBREVIATED COMPONENT MAINTENANCE MANUAL ME406 (453-6603), ME406HM (453-6604) 13.00 INSTALLATION NOTES: (330) 1. MOUNT ANTENNA USING #8-32 SS 100° C’SK MACHINE SCREWS AND ASSOCIATED HARDWARE. 72548( 72  “ /%,1  “ 1‡FP 2. PROVIDE 0.625 (5/8”) (16 MM) Ø HOLE IN AIRCRAFT FOR BNC CONNECTOR.

  • Page 60: Remote Switch

    COBHAM AVIONICS WULFSBERG ELECTRONICS ABBREVIATED COMPONENT MAINTENANCE MANUAL ME406 (453-6603), ME406HM (453-6604) TASK 25-62-30-450-803 4. Remote Switch SUBTASK 25-62-30-450-001 Location NOTE: This procedure is applicable to the most commonly used remote switch (345-6196-04). If an optional switch is installed in lieu of this one, the applicable installation instructions should be consulted.

  • Page 61: Buzzer

    COBHAM AVIONICS WULFSBERG ELECTRONICS ABBREVIATED COMPONENT MAINTENANCE MANUAL ME406 (453-6603), ME406HM (453-6604) TASK 25-62-30-450-804 5. Buzzer SUBTASK 25-62-30-450-001 Location CAUTION: PLACING THE BUZZER IN THE COCKPIT IS NOT RECOMMENDED DUE TO THE POTENTIAL FOR DISTRACTION. THE BUZZER PRODUCES A LOUD, SIREN-TYPE SOUND WHEN THE ELT IS ACTIVATED.

  • Page 62: Wiring

    COBHAM AVIONICS WULFSBERG ELECTRONICS ABBREVIATED COMPONENT MAINTENANCE MANUAL ME406 (453-6603), ME406HM (453-6604) TASK 25-62-30-450-805 6. Wiring SUBTASK 25-62-30-990-001 General Considerations and Recommendations CAUTION: IF GROUND OR OTHER CONNECTIONS ARE BROKEN OR OTHERWISE DAMAGED, THE ELT IS STILL CAPABLE OF AUTOMATIC ACTIVATION; HOWEVER, THE COCKPIT REMOTE SWITCH MAY BE INCAPABLE OF RESETTING THE ELT AND OPERATION MAY NOT BE INDICATED ON THE REMOTE SWITCH LED.

  • Page 63: Figure 18. Metal Airframe Wiring Diagrams

    COBHAM AVIONICS WULFSBERG ELECTRONICS ABBREVIATED COMPONENT MAINTENANCE MANUAL ME406 (453-6603), ME406HM (453-6604) CABLE ELT D-SUB REMOTE SWITCH SHIELD PLUG MOLEX PLUG LIGHT RESET 1 RESET 2 EXTERNAL ON G-SWITCH LOOP +14V UNSWITCHED POWER G-SWITCH LOOP +28v 1/2A SLO-BLO FUSE GROUND NOTE: PINS 6 &...

  • Page 64: Figure 19. Composite Airframe Wiring Diagrams

    COBHAM AVIONICS WULFSBERG ELECTRONICS ABBREVIATED COMPONENT MAINTENANCE MANUAL ME406 (453-6603), ME406HM (453-6604) CABLE ELT D-SUB REMOTE SWITCH SHIELD PLUG MOLEX PLUG LIGHT RESET 1 RESET 2 UNSWITCHED EXTERNAL ON POWER G-SWITCH LOOP +14V G-SWITCH LOOP +28v 1/2A SLO-BLO FUSE GROUND NOTE: PINS 6 &...

  • Page 65: Remote Switch Harness Fabrication

    COBHAM AVIONICS WULFSBERG ELECTRONICS ABBREVIATED COMPONENT MAINTENANCE MANUAL ME406 (453-6603), ME406HM (453-6604) SUBTASK 25-62-30-450-001 Remote Switch Harness Fabrication See "Figure 20. Remote Switch Harness Arrangement". PIN 8 PIN 1 PIN 15 150-1130 PIN 9 NOTE: D-SUB HOUSING NOT SHOWN FOR CLARITY ME406 ELT (REF.) 151-5009 PIN 1...

  • Page 66: Elt D-Sub Plug Installation

    COBHAM AVIONICS WULFSBERG ELECTRONICS ABBREVIATED COMPONENT MAINTENANCE MANUAL ME406 (453-6603), ME406HM (453-6604) Prepare the wires fabricated in Step (6), as described in Steps (2)(a) and (2)(b). Crimp appropriately sized ring terminals on the buzzer ends of the buzzer power and ground wires.

  • Page 67: Figure 21. D-Sub Plug Assembly

    COBHAM AVIONICS WULFSBERG ELECTRONICS ABBREVIATED COMPONENT MAINTENANCE MANUAL ME406 (453-6603), ME406HM (453-6604) Solder the wiring to the D-Sub plug as follows, referring to the wiring diagram appropriate for the installation: Harness wires, NOTE: Make note of the wiring identification and pin location relationships, such that the wiring at the remote switch end can be terminated correctly.

  • Page 68: Cockpit Remote Switch 9-Pin Plug Installation

    COBHAM AVIONICS WULFSBERG ELECTRONICS ABBREVIATED COMPONENT MAINTENANCE MANUAL ME406 (453-6603), ME406HM (453-6604) SUBTASK 25-62-30-450-003 Cockpit Remote Switch 9-Pin Plug Installation Insert the wiring pins in the Molex 9-pin cockpit remote switch plug (151-5009), referring to the wiring diagram appropriate for the installation, as follows: Insert each harness female pin into the plug, referring to the wire identification and pin relationships recorded in Step C.(5)(a).

  • Page 69: Remote Switch Alternate Power Source

    COBHAM AVIONICS WULFSBERG ELECTRONICS ABBREVIATED COMPONENT MAINTENANCE MANUAL ME406 (453-6603), ME406HM (453-6604) SUBTASK 25-62-30-450-007 Remote Switch Alternate Power Source If the aircraft does not have an electrical system (i.e., no battery), it is permissible to fabricate a substitute power source for the LED, as follows: Connect three suitably supported 9V alkaline batteries together in series.

  • Page 70: Elt Installation

    COBHAM AVIONICS WULFSBERG ELECTRONICS ABBREVIATED COMPONENT MAINTENANCE MANUAL ME406 (453-6603), ME406HM (453-6604) TASK 25-62-30-410-802 7. ELT Installation SUBTASK 25-62-30-410-001 Installation and Test CAUTION: TAKE CARE TO KEEP THE REMOTE SWITCH PLUG STRAIGHT WHEN CONNECTING IT TO THE ELT. IF THE PLUG IS COCKED (I.E., CROOKED) WHEN INSERTING IT INTO THE ELT RECEPTACLE, THE ELT MAY ACTIVATE.

  • Page 71: Harness Elt D-Sub Plug Sealing

    COBHAM AVIONICS WULFSBERG ELECTRONICS ABBREVIATED COMPONENT MAINTENANCE MANUAL ME406 (453-6603), ME406HM (453-6604) Connect the remote switch harness plug to the ELT, as follows: Press two sealant strips (850-0814) against the male pins of the ELT receptacle with the tacky side against the pins, while peeling the foam backing off each sealant strip. NOTE: Verify sealant strips match the receptacle shape.

  • Page 72: Installation Documentation

    COBHAM AVIONICS WULFSBERG ELECTRONICS ABBREVIATED COMPONENT MAINTENANCE MANUAL ME406 (453-6603), ME406HM (453-6604) SUBTASK 25-62-30-410-002 Installation Documentation Make appropriate logbook (i.e., aircraft records) entries and submit FAA Form 337, along with any supporting data required by the FAA for approval of the installation, as applicable. NOTE: Refer to TASK 25-62-30-410-801, on page 53, for additional information on installation approvals.

  • Page 73: Battery Pack Installation

    COBHAM AVIONICS WULFSBERG ELECTRONICS ABBREVIATED COMPONENT MAINTENANCE MANUAL ME406 (453-6603), ME406HM (453-6604) TASK 25-62-30-450-806 8. Battery Pack Installation SUBTASK 25-62-30-450-001 Battery Reinstallation CAUTION: THE BATTERY PACK CONTAINS ELECTROSTATIC DISCHARGE SENSITIVE (ESD) COMPONENTS AND IT MUST BE HANDLED WITH CARE. IF POSSIBLE, WEAR A GROUNDED WRIST STRAP WHEN HANDLING THE BATTERY PACK DURING INSTALLATION ACTIVITIES.

  • Page 74: New Battery Installation

    COBHAM AVIONICS WULFSBERG ELECTRONICS ABBREVIATED COMPONENT MAINTENANCE MANUAL ME406 (453-6603), ME406HM (453-6604) Reset the ELT by toggling the ELT local control switch to “ON” and back to “ARM” after 1-2 seconds, if the ELT activates. NOTE: This step may be necessary because the ELT will occasionally activate when power is connected to it in Step 6.
  • Page 75 COBHAM AVIONICS WULFSBERG ELECTRONICS ABBREVIATED COMPONENT MAINTENANCE MANUAL ME406 (453-6603), ME406HM (453-6604) Place the duplicate copy of the battery expiration date label on the ELT in a location where it is visible when the ELT is installed in the mounting tray. NOTE: The label is supplied with the new battery pack.

  • Page 76: Helicopter Installations - Special Considerations

    COBHAM AVIONICS WULFSBERG ELECTRONICS ABBREVIATED COMPONENT MAINTENANCE MANUAL ME406 (453-6603), ME406HM (453-6604) TASK 25-62-30-410-803 9. Helicopter Installations - Special Considerations SUBTASK 25-62-30-990-001 Background There are few guidelines, aside from experience, regarding the best way to mount an ELT in helicopters. Before the availability of multi-axis G-switch modules, manufacturers advised installing ELTs with the sensitive axis pointing approximately 45°...

  • Page 77: Orientation

    COBHAM AVIONICS WULFSBERG ELECTRONICS ABBREVIATED COMPONENT MAINTENANCE MANUAL ME406 (453-6603), ME406HM (453-6604) SUBTASK 25-62-30-410-001 Orientation Mount the ME406HM ELT parallel to the waterline of the fuselage, along the longitudinal axis, with the direction-of-flight arrow on the ELT pointing forward. See "Figure 25. Orientation of ELT for Helicopter Installations".
  • Page 78 COBHAM AVIONICS WULFSBERG ELECTRONICS ABBREVIATED COMPONENT MAINTENANCE MANUAL ME406 (453-6603), ME406HM (453-6604) THIS IS A BLANK PAGE 25-62-30 Page 78 of 88 APR 06/10...

  • Page 79: Appendix A - Elt Registration

    COBHAM AVIONICS WULFSBERG ELECTRONICS ABBREVIATED COMPONENT MAINTENANCE MANUAL ME406 (453-6603), ME406HM (453-6604) APPENDIX A – ELT REGISTRATION TASK 25-62-30-990-801 1. Background Information SUBTASK 25-62-30-990-001 Hex ID Code Each 406 MHz ELT is programmed with a unique hex ID code (i.e., registration code) that is transmitted to the SAR satellite system.

  • Page 80: Registration

    COBHAM AVIONICS WULFSBERG ELECTRONICS ABBREVIATED COMPONENT MAINTENANCE MANUAL ME406 (453-6603), ME406HM (453-6604) TASK 25-62-30-990-802 2. Registration SUBTASK 25-62-30-990-001 Responsibility It is the responsibility of the aircraft owner to register the ELT. If an ELT is moved to a different aircraft (i.e., an aircraft other than the one it was originally installed on), and/or the aircraft is registered in a new country, the ELT must be re-registered.

  • Page 81: Illustrated Parts List

    Purpose This illustrated parts list (IPL) illustrates and lists the spare parts, with attaching hardware, applicable to the ME406 Series ELT. Parts and components not listed herein, are not field replaceable and ELT repairs requiring parts outside the scope of this manual must be accomplished by the manufacturer.

  • Page 82: Manufacturer Name And Address

    COBHAM AVIONICS WULFSBERG ELECTRONICS ABBREVIATED COMPONENT MAINTENANCE MANUAL ME406 (453-6603), ME406HM (453-6604) TASK 25-62-30-990-802 2. Manufacturer Name and Address SUBTASK 25-62-30-990-001 Ordering Information Approved parts may be ordered from Wulfsberg Electronics, or any authorized dealer. CONTACT INFORMATION Sales, Wulfsberg Electronics 6400 Wilkinson Dr.

  • Page 83: Explanation Of Detailed Parts List Entries

    COBHAM AVIONICS WULFSBERG ELECTRONICS ABBREVIATED COMPONENT MAINTENANCE MANUAL ME406 (453-6603), ME406HM (453-6604) TASK 25-62-30-990-803 3. Explanation of Detailed Parts List Entries SUBTASK 25-62-30-990-001 Fig # & Item Column The first number at the top of the column is the figure number of the corresponding illustration.

  • Page 84: Upa (Units Per Assembly) Column

    COBHAM AVIONICS WULFSBERG ELECTRONICS ABBREVIATED COMPONENT MAINTENANCE MANUAL ME406 (453-6603), ME406HM (453-6604) Assemblies, subassemblies, and detail parts subject to modification, deletion, addition, or replacement by an issued service bulletin, are annotated to indicate both pre- and post- service bulletin configurations. The term (PRE SB XXXX) in the “Nomenclature” column designates the original configuration, and the term (POST SB XXXX) identifies assemblies and parts after the modification has been completed.

  • Page 85: Detailed Parts List

    COBHAM AVIONICS WULFSBERG ELECTRONICS ABBREVIATED COMPONENT MAINTENANCE MANUAL ME406 (453-6603), ME406HM (453-6604) TASK 25-62-30-990-804 4. Detailed Parts List Figure 26. ME406 Series ELT Main Assembly and Installation FIG # ITEM PART # 1234 NOMENCLATURE 453-6603 ME406 Main Assembly 453-6604 ME406HM Main Assembly 452-6499 .
  • Page 86 COBHAM AVIONICS WULFSBERG ELECTRONICS ABBREVIATED COMPONENT MAINTENANCE MANUAL ME406 (453-6603), ME406HM (453-6604) FIG # ITEM PART # 1234 NOMENCLATURE – 241-0832 Nut, Hex 8-32 x 1/4” SS – 591-0999-01 . Label, ME406 Country/Hex ID – 591-0429 . Label, Country Code 25-62-30 Page 86 of 88 APR 06/10...

  • Page 87: Figure 27. Electrical Components

    COBHAM AVIONICS WULFSBERG ELECTRONICS ABBREVIATED COMPONENT MAINTENANCE MANUAL ME406 (453-6603), ME406HM (453-6604) Figure 27. Electrical Components WIRING HARNESS (Ref. Only) FIG # ITEM PART # 1234 NOMENCLATURE 345-6196-04 Switch, Cockpit Remote ATTACHING PARTS – 201-0408 Screw, PHIL 4-40 x 1/4” SS –...

  • Page 88: Figure 28. Antennas

    COBHAM AVIONICS WULFSBERG ELECTRONICS ABBREVIATED COMPONENT MAINTENANCE MANUAL ME406 (453-6603), ME406HM (453-6604) Figure 28. Antennas FIG # ITEM PART # 1234 NOMENCLATURE 110-338 Antenna, Tri-Band CI317-1 (Single Input) 110-773 Antenna, 121.5/406 MHz Whip – 611-6013-04 . Cable, Coax BNC to BNC (6 ft.) 25-62-30 Page 88 of 88 APR 06/10...

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