Document Outline

• Record of Revisions
• Service Bulletin List
• List of Effective Pages
• Table of Contents
• List of Figures
• Introduction
  • 1. Manual Usage
    • A. General
    • B. Application
  • 2. Model Descriptions
    • A. C406-1
    • B. C406-1HM
      • Figure 1. ELT Orthogonal Axes
  • 3. Approvals
    • A. C406-1 and C406-1HM
    • B. Battery
    • C. RTCA DO-160D Compliance
      • Table 1. Environmental Categories Breakdown
  • 4. Frequency Allocations
    • A. Application
    • B. Discussion
  • 5. List of Acronyms, Abbreviations, and Definitions
  • 6. References
    • A. Regulatory Documents
    • B. Other Documents
• Description and Operation
  • 1. Description
    • A. Functional Overview
    • B. Components
      • Figure 2. C406-1 Series ELT and Mounting Frame Assembly
      • Figure 3. Cockpit Remote Switch
      • Figure 4. Buzzer
      • Figure 5. Battery Pack Assembly
      • Figure 6. Rod and Whip Antennas
      • Figure 7. Blade Antennas
  • 2. Operation
    • A. Operational Overview
      • Figure 8. ELT Operational Flow Diagram
    • B. Normal Operation
    • C. Manual Activation
    • D. ELT Reset
    • E. Functional Check
  • 3. Specifications
    • A. Environmental and Physical
      • Table 2. Environmental and Physical Specifications
    • B. Electrical
      • Table 3. Electrical Specifications
    • C. Antennas
      • Table 4. Antenna Specifications
• Test and Fault Isolation
  • 1. Inspection and Test Regulatory Requirements
    • A. United States
    • B. Canada
    • C. Other Countries
  • 2. Inspection and Test Procedures
    • A. Checklist
      • Table 5. ELT Inspection and Test Checklist
    • B. Preparation
    • C. Coax Cable and Wiring Connections Inspection – Item 1
    • D. Mounting Tray and Hardware Inspection – Item 2
    • E. Battery Pack Inspection – Item 3
    • F. G-Switch Functional Check – Item 4
    • G. Performance Testing Setup
      • Figure 9. Performance Tests Equipment Setup
    • H. 121.5 MHz Frequency Measurement – Item 5a
    • I. Audio Modulation Check – Item 5b
    • J. 121.5/243.0 MHz Power Output Measurement – Item 5c
    • K. 406 MHz Frequency Measurement – Item 5d
    • L. 406 MHz Power Output Measurement – Item 5e
    • M. Current Draw Test – Item 5f
      • Figure 10. Current Draw Test Setup
    • N. Digital Message Verification – Item 5g
      • Figure 11. Short and Long 406 MHz Message Examples
    • O. ELT Reset Check – Item 5h
    • P. Installed Transmitter Test – Item 6
    • Q. Antenna Test – Item 7
    • R. Inspection and Test Documentation – Item 8
  • 3. Fault Isolation
    • A. Self-Test Error Troubleshooting Guidelines
      • Table 6. ELT Self-Test Error Codes Troubleshooting Guide
    • B. ELT Troubleshooting Guidelines
      • Table 7. ELT Troubleshooting Guide
• Removal
  • 1. ELT
    • A. ELT Removal
      • Figure 12. ELT Removal Sequence
  • 2. Battery
    • A. Battery Pack Removal
      • Figure 13. Battery Pack Removal
  • 3. Material or Equipment Return
    • A. Shipment Information
    • B. Return Material Authorization
• Installation
  • 1. Regulatory Requirements and Guidelines
    • A. TSO C126, Paragraph D
    • B. FAA
    • C. Canada
    • D. Other Countries
    • E. RTCA
  • 2. Mounting Tray
    • A. Location
      • Figure 14. C406-1 Series ELT Outline and Dimensions
    • B. Installation
      • Figure 15. Typical Mounting Tray Installation
  • 3. Antenna
    • A. Selection
    • B. Location
    • C. Installation
      • Figure 16. Rod Antenna 110-338 and Whip Antenna 110-343 Outlines and Dimensions
      • Figure 17. Blade Antennas 110-340 and 110-341 Outlines and Dimensions
  • 4. Remote Switch
    • A. Location
      • Figure 18. Remote Switch Outline and Dimensions
    • B. Installation
  • 5. Buzzer
    • A. Location
    • B. Installation
      • Figure 19. Buzzer Outline and Dimensions
  • 6. Wiring
    • A. General Considerations and Recommendations
    • B. Remote Switch Harness Fabrication
      • Figure 20. Remote Switch Harness Arrangement
      • Figure 21. Remote Switch Harness Wiring Diagram
    • C. ELT 12-Pin Receptacle Installation
      • Figure 22. Remote Switch Harness Arrangement at ELT End
    • D. Cockpit Remote Switch 9-Pin Plug Installation
    • E. Wiring Installation
    • F. Antenna Connection
    • G. Cockpit Remote Switch Power Connection
    • H. Remote Switch Alternate Power Source
    • I. Airframe Ground Connections
    • J. Buzzer Connection
    • K. Remote Switch Final Installation
  • 7. ELT Installation
    • A. Installation and Test
      • Figure 23. ELT Installation Sequence
    • B. Harness ELT Receptacle Sealing
    • C. Installation Documentation
  • 8. Battery Pack Installation
    • A. Battery Reinstallation
      • Figure 24. Battery Pack Installation
      • Figure 25. Battery Pack Screw Tightening Pattern
    • B. New Battery Installation
  • 9. Helicopter Installations - Special Considerations
    • A. Background
    • B. Recommendations
      • Figure 26. ELT Orthogonal Axes
    • C. Orientation
      • Figure 27. Orientation of ELT for Helicopter Installations
• Appendix A – ELT Registration
  • 1. Background Information
    • A. Hex ID Code
    • B. Reason for Registration
    • C. Registration Information Resources
  • 2. Registration
    • A. Responsibility
    • B. Required Information
    • C. Where to Register
• Illustrated Parts List
  • 1. Introduction
    • A. Purpose
    • B. IPL Usage Guide
  • 2. Manufacturer Name and Address
    • A. Ordering Information
  • 3. Explanation of Detailed Parts List Entries
    • A. Fig # & Item Column
    • B. Part # Column
    • C. Nomenclature Column
    • D. UPA (Units Per Assembly) Column
  • 4. Detailed Parts List
    • Figure 28. C406-1 Series ELT Main Assembly and Installation
    • Figure 29. Electrical Components
    • Figure 30. Antennas