To Next PageTo Next PageWhat to do if my COBHAM C406-N shows a 3-Flash error?
If your COBHAM Transmitter is showing a 3-Flash error, it indicates a 406 MHz transmission problem. First, verify the coax cable and antenna are properly connected and in good condition. Perform a continuity check of the center conductor and shield to check for a shorted cable. Also, check for intermittent connections in the coax cable.
Why is my COBHAM C406-N showing a 2-Flash (long/short) error?
If your COBHAM Transmitter shows a 2-Flash (long/short) error, it could indicate a programming adapter problem. Ensure there's a jumper installed between Pin 3 and Pin 4 of the ELT plug; if not, install one or repair the connection. If a Programming Adapter (PA) is in use, it may need programming—refer to Appendix B for instructions. If the PA is used and there is a communications or wiring error, repair or replace the wiring as necessary.
How to fix a 1-Flash error on a COBHAM Transmitter?
If your COBHAM Transmitter is showing a 1-Flash error, it indicates a G-switch loop open (Pins 12 and 13). Check if the remote switch harness connector is loose or disconnected at the ELT and tighten it if necessary. Inspect the ELT connector pins for any bending or breakage, and repair or replace them as needed. Also, check the connector pins 12 and 13 jumper for any breaks internal to the remote switch harness connector at the ELT end, and repair any open jumpers.
General| Brand | COBHAM |
|---|---|
| Model | C406-N Series |
| Category | Transmitter |
| Language | English |
Explains the manual's purpose, accuracy, and general information.
Explains the manual's purpose, accuracy, and general information.
Details the manual's scope and applicability to the C406-N Series ELT.
Describes the C406-N model ELT, its functions, and system components.
Describes the C406-N model ELT, its functions, and system components.
Describes the C406-N HM model, highlighting its helicopter-specific features.
Lists the TSO, TC, and other certifications for the ELTs.
Lists the TSO, TC, and other certifications for the ELTs.
Details the TSO certification for the lithium battery pack.
Refers to DO-160D environmental categories and their breakdown.
Addresses the 406.0-406.1 MHz transmitter window and frequency allocations.
Addresses the 406.0-406.1 MHz transmitter window and frequency allocations.
Discusses changes to the 406 MHz frequency and product label information.
Lists regulatory documents referred to in the manual.
Lists regulatory documents referred to in the manual.
Lists other documents available from Artex or Wulfsberg Electronics.
Describes the ELT's automatic activation and transmission process.
Describes the ELT's automatic activation and transmission process.
Lists and illustrates the main components of the ELT and its assembly.
Provides a general overview of the ELT's operational flow and activation.
Provides a general overview of the ELT's operational flow and activation.
Details the conditions for normal ELT operation and aircraft navigation system interaction.
Explains how to manually activate the ELT using control switches.
Describes the procedure for resetting the ELT after accidental activation.
Recommends monthly functional checks to verify ELT operational status.
Lists environmental and physical specifications for the ELT, including shock and weight.
Lists environmental and physical specifications for the ELT, including shock and weight.
Details electrical specifications such as operating frequencies and power output.
Lists specifications for approved antennas used with the ELT.
Outlines inspection requirements based on US FARs.
Outlines inspection requirements based on US FARs.
Details inspection requirements according to Canadian regulations.
States compliance with applicable national regulatory authorities.
Provides a checklist for ELT inspection and test completion.
Provides a checklist for ELT inspection and test completion.
Describes preparatory steps before performing inspections and tests.
Details inspection of coax cable and wiring connections for damage.
Outlines inspection of the ELT mounting tray and hardware.
Provides instructions for inspecting the battery pack, including expiration date.
Details the procedure for testing the G-switch functionality.
Explains the setup for performing performance tests on the ELT.
Describes the process for measuring the 121.5 MHz frequency.
Explains how to perform an audio modulation check.
Details measuring the power output for 121.5/243.0 MHz.
Describes how to measure the 406 MHz frequency.
Details measuring the 406 MHz power output.
Explains how to perform a current draw test on the ELT.
Describes verifying the ELT's digital message transmission.
Details how to check the ELT reset function.
Outlines the test for the installed transmitter.
Describes the procedure for testing the antenna.
Covers making entries in aircraft records after testing.
Provides guidelines for troubleshooting ELT self-test error codes.
Provides guidelines for troubleshooting ELT self-test error codes.
Offers general troubleshooting guidelines for ELT operational issues.
Details the step-by-step procedure for removing the ELT.
Details the step-by-step procedure for removing the ELT.
Explains how to remove the ELT battery pack.
Explains how to remove the ELT battery pack.
Provides information required for returning material to the factory.
Provides information required for returning material to the factory.
Details the process for obtaining and using an RMA number.
Covers TSO approval and installation requirements.
Covers TSO approval and installation requirements.
Details FAA requirements and supporting documentation for installation.
Outlines installation requirements according to Canadian regulations.
States compliance with applicable national regulatory authorities.
Provides RTCA guidelines for mounting and component attachment.
Guides the selection of a suitable location for the mounting tray.
Guides the selection of a suitable location for the mounting tray.
Details the installation procedure for the mounting tray.
Advises on selecting approved antennas based on installation needs.
Advises on selecting approved antennas based on installation needs.
Guides the selection of a suitable location for antenna installation.
Details the procedure for installing the antenna.
Guides placement of the remote switch in the cockpit.
Guides placement of the remote switch in the cockpit.
Details the installation procedure for the remote switch.
Guides the selection of a suitable location for the buzzer.
Guides the selection of a suitable location for the buzzer.
Details the installation procedure for the buzzer.
Provides general wiring and grounding recommendations.
Provides general wiring and grounding recommendations.
Details fabricating the remote switch harness.
Explains the installation of the ELT 22-pin plug.
Details installing the cockpit remote switch plug.
Covers routing and supporting wiring through the airframe.
Describes connecting the antenna coax cable.
Details connecting power to the remote switch.
Explains connecting power to the ELT.
Covers making airframe ground connections.
Details connecting the buzzer wires.
Covers final installation of the remote switch.
Details the step-by-step procedure for installing the ELT.
Details the step-by-step procedure for installing the ELT.
Outlines post-installation testing procedures for the ELT.
Covers documentation requirements for installation approval.
Details the procedure for reinstalling an existing battery pack.
Details the procedure for reinstalling an existing battery pack.
Explains the process for installing a new replacement battery.
Discusses prior considerations for ELT mounting in helicopters.
Discusses prior considerations for ELT mounting in helicopters.
Recommends the C406-N HM ELT for helicopters due to its G-switch.
Provides guidelines for orienting the ELT during helicopter installation.
Explains the Hex ID code and its transmitted information.
Explains the Hex ID code and its transmitted information.
Details why ELT registration is important for rescue coordination.
Points to COSPAS-SARSAT documents for programming and registration.
Clarifies the aircraft owner's responsibility for ELT registration.
Clarifies the aircraft owner's responsibility for ELT registration.
Lists the information needed for ELT registration.
Provides agency details for ELT registration in the US and other countries.
Explains the function of the Programming Adapter for reprogramming ELTs.
Explains the function of the Programming Adapter for reprogramming ELTs.
Describes the physical characteristics of the Programming Adapter.
Covers programming the PA with aircraft ID information.
Explains the automatic operation of the PA.
Details the wiring procedures for PA installation.
Details the wiring procedures for PA installation.
Covers the assembly of the PA onto the ELT plug.
Details the physical installation of the PA assembly.
Outlines the test to verify aircraft ID reprogramming.
Explains the G737 control panel as an optional replacement.
Explains the G737 control panel as an optional replacement.
Describes the components of the control panel.
Describes the modified buzzer for Boeing configurations.
Explains the operation of the remote switch control panel.
Guides the selection of a cockpit location for the control panel.
Guides the selection of a cockpit location for the control panel.
Details the installation procedure for the control panel.
Guides the selection of a location for the modified buzzer.
Guides the selection of a location for the modified buzzer.
Details the installation procedure for the modified buzzer.
Details fabricating the wiring harness for the control panel.
Details fabricating the wiring harness for the control panel.
Fabricates wires for the modified buzzer.
Covers installing the wiring for the control panel.
Details wiring installation for the modified buzzer.
Covers installing the standard buzzer wiring.
Covers the final installation steps for the control panel.
Details functional testing of the control panel.
Explains the IPL's purpose and listing of spare parts.
Explains the IPL's purpose and listing of spare parts.
Provides guidance on how to use the Illustrated Parts List.
Details how to order parts from Wulfsberg Electronics.
Details how to order parts from Wulfsberg Electronics.
Explains the 'Fig # & Item' column in the parts list.
Explains the 'Fig # & Item' column in the parts list.
Explains the 'Part #' column in the parts list.
Explains the 'Nomenclature' column and its indenture system.
Explains the 'Units Per Assembly' column.
Lists the detailed parts for the ELT main assembly.
