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ARTEX PRODUCTS / ACR ELECTRONICS, INC. 

5757 Ravenswood Rd, Ft. Lauderdale, FL 33312 

Phone (954) 981-3333, Fax (954) 983-5087 

www.acrartex.com

  

 

 

 
 

ARTEX ELT C406-N / ARTEX ELT C406-N HM 

Emergency Locator Transmitter

 

 

 
 

 
 
 

 
 

 
 

 
 
 

 
 

 
 
 

 
 

 
 

 
 

 

 

Description, Operation, Installation and Maintenance Manual 

570-5060 Rev. M 

 

 
 

Summary of Contents for ELT C406-N

Page 1: ...ICS INC 5757 Ravenswood Rd Ft Lauderdale FL 33312 Phone 954 981 3333 Fax 954 983 5087 www acrartex com ARTEX ELT C406 N ARTEX ELT C406 N HM Emergency Locator Transmitter Description Operation Installation and Maintenance Manual 570 5060 Rev M ...

Page 2: ...ion ACR Electronics Inc makes no warranty with regard to the documentation or data contained herein ACR Electronics Inc 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 ...

Page 3: ...ovals 14 A C406 N and C406 N HM 14 B Battery 14 C RTCA DO 160D Compliance 15 4 Frequency Allocations 16 A Application 16 B Discussion 16 5 References 16 A Regulatory Documents 16 B Other Documents 17 DESCRIPTION AND OPERATION 18 1 Description 18 A Functional Overview 18 B Components 19 2 Operation 22 A Operational Overview 22 B Normal Operation 23 C Manual Activation 23 D ELT Reset 23 E Functional...

Page 4: ...ement Item 5e 31 M Current Draw Test Item 5f 32 N Digital Message Verification Item 5g 33 O ELT Reset Check Item 5h 34 P Installed Transmitter Test Item 6 34 Q Antenna Test Item 7 35 R Inspection and Test Documentation Item 8 35 3 Fault Isolation 36 A Self Test Error Troubleshooting Guidelines 36 B ELT Troubleshooting Guidelines 38 REMOVAL 39 1 ELT 39 A ELT Removal 39 2 Battery 40 A Battery Pack R...

Page 5: ...st Installation Testing 61 C Installation Documentation 61 8 Battery Pack Installation 62 A Battery Reinstallation 62 B New Battery Installation 63 9 Helicopter Installations Special Considerations 64 A Background 64 B Recommendations 64 C Orientation 65 APPENDIX A ELT REGISTRATION 66 1 Background Information 66 A Hex ID Code 66 B Reason for Registration 66 C Registration Information Resources 66 ...

Page 6: ...Panel Wiring Fabrication 75 B Modified Buzzer Wiring Fabrication 77 C Remote Switch Control Panel Wiring Installation 77 D Modified Buzzer Wiring Installation 78 E Standard Buzzer Installation 78 F Remote Switch Control Panel Final Installation 78 G Remote Switch Control Panel Functional Test 80 ILLUSTRATED PARTS LIST 81 1 Introduction 81 A Purpose 81 B IPL Usage Guide 81 2 Manufacturer Name and A...

Page 7: ...m For a complete description go to the official web site for the International COSPAS SARSAT Program DER Designated Engineering Representative An individual qualified and designated by the FAA to approve or recommend approval of technical data to the FAA Drip Loop Extra wire length used to form a U shaped bend in a wire or cable Water or other fluids will flow down to the bottom of the loop and dr...

Page 8: ... detect radio waves RTCA Radio Technical Commission for Aeronautics Organization that makes recommendations for airworthiness Refer to http www rtca org aboutrtca asp for more information RTV A rubbery silicon based adhesive typically used to prevent vibration problems and water intrusion SAR Search and Rescue Screen Room The term Screen Room within the context of this document refers to a room de...

Page 9: ...0 340 and 110 341 Outlines and Dimensions 49 Figure 18 Remote Switch Outline and Dimensions 50 Figure 19 Buzzer Outline and Dimensions 51 Figure 20 Remote Switch Harness Arrangement 53 Figure 21 Remote Switch Harness Wiring Diagram 54 Figure 22 Harness ELT 22 Pin Plug Arrangement 56 Figure 23 ELT Installation Sequence 60 Figure 24 Battery Pack Installation 62 Figure 25 Battery Pack Screw Tightenin...

Page 10: ...ARTEX PRODUCTS ACR ELECTRONICS INC DESCRIPTION OPERATION INSTALLATION AND MAINTENANCE MANUAL C406 N C406 N HM Page 10 of 88 Figure 37 Electrical Components 86 Figure 38 Antennas 88 ...

Page 11: ...EASE May 12 2003 A DCN 2227 Jul 11 2003 A DCN 2273 Sep 08 2003 B DCN 2380 Mar 22 2004 C DCN 2444 Aug 05 2004 C DCN 2730 Mar 09 2006 C DCN 2870 Oct 05 2006 D DCN 2961 Mar 13 2007 D DCN 2968 Mar 20 2007 E DCA W9414 Apr 06 2010 F ECO 14756 Jul 28 2011 G ECO 15149 Jul 31 2012 H ECO 15329 Mar 1 2013 J ECO 15726 Aug 13 2014 K ECO 15830 Dec 01 2014 L ECO 16813 Jan 22 2018 M ECO 16838 Jan 25 2018 ...

Page 12: ...PRODUCTS ACR ELECTRONICS INC DESCRIPTION OPERATION INSTALLATION AND MAINTENANCE MANUAL C406 N C406 N HM Page 12 of 88 SERVICE BULLETIN LIST SERVICE BULLETIN NO ISSUE DATE SUBJECT MANUAL REV NO MANUAL REV DATE ...

Page 13: ...he C406 N Series ELT including a Description and Operation b Test and Fault Isolation includes inspection criteria c Removal d Installation e Registration f Illustrated Parts List 2 In the United States the C406 N 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 3 In Canada the C...

Page 14: ...rticle either on or within a specific type or class of aircraft to 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 if performed under 14 CFR Part 43 or the applicable airworthiness requirements 2 Transport Canada Type Certificate Data Sheet AP 56 3 Industry Canada...

Page 15: ...of Cooling B 5 0 Temperature Variation C 6 0 Humidity B204 7 0 Operational Shock and Crash Safety 204 8 0 Vibration X 9 0 Explosion R 10 0 Waterproofness X 11 0 Fluids Susceptibility X 12 0 Sand and Dust X 13 0 Fungus X 14 0 Salt Spray X 15 0 Magnetic Effect Z 16 0 Power Input A 17 0 Voltage Spike Z 18 0 Audio Frequency Susceptibility Z 19 0 Induced Signal Susceptibility 204 20 0 Radio Frequency S...

Page 16: ... 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 documen...

Page 17: ...e ELT AP Automatic Deployable ELT AD Survival ELT S Operating on 121 5 and 243 0 MHz e DO 204 Minimal Operational Performance Standards for 406 MHz Emergency Locator Transmitters ELT B Other Documents 1 The following documents are available online at the Artex products web site at www acrartex com or from ACR Electronics upon request a Document number 570 1000 ELT Test Set Operations Manual b Docu...

Page 18: ...raft navigation system Other formats such as RS 232 RS 422 etc are not supported 3 The 406 MHz transmitter will operate for 24 hours and then shuts down automatically The 121 5 243 0 transmitter will continue to operate until the batteries are exhausted which is typically at least 50 hours 4 The 406 MHz transmitter produces a much more accurate position typically 3 kilometers as compared with 15 t...

Page 19: ... ELT main assembly is housed in a high impact fire resistant polycarbonate plastic case which is enclosed in a protective mounting frame assembly made of similar material See Figure 2 C406 N Series ELT and Mounting Frame Assembly NOTE The ELT main assembly and its mounting frame assembly are capable of withstanding extremely harsh environments and have been subjected to the rigorous environmental ...

Page 20: ...ed or disabled from the cockpit Cockpit operation is limited to deactivating or manually activating the ELT Figure 3 Cockpit Remote Switch 3 The buzzer i e horn provides an audible alert when the ELT is active See Figure 4 Buzzer Figure 4 Buzzer 4 The battery pack for the C406 N Series ELT consists of four D size lithium manganese dioxide cells connected in series In an effort to increase the safe...

Page 21: ...re 5 Battery Pack Assembly 5 Four single input antennas are approved for use with the C406 N Series ELT Selection of the proper antenna is dependent upon end use aircraft configuration and speed and other factors See Figure 6 Rod and Whip Antennas and Figure 7 Blade Antennas Figure 6 Rod and Whip Antennas Figure 7 Blade Antennas ...

Page 22: ...regards to automatic activation The ELT cannot be activated by dropping rough handling or during shipping 4 When the ELT is activated the presence of the emergency sweep tone and the flashing cockpit remote switch panel LED indicates an active normal functioning ELT The remote switch LED must immediately begin to flash continuously upon ELT activation 5 The ELT is considered to be either ACTIVE or...

Page 23: ...or the ELT to incorporate position data into the 406 MHz message C Manual Activation 1 The ELT may be manually activated by placing either the remote switch or the ELT local switch in the ON position NOTE As long as the cockpit remote switch and the ELT local switch are in the ARM OFF positions respectively the ELT will automatically activate on impact D ELT Reset 1 If the ELT is accidently activa...

Page 24: ...998 CRITERIA PARAMETER CHARACTERISTIC Temperature Storage 55 C to 85 C Operating 20 C to 55 C Mechanical Vibration 10 g 5 Hz to 2 000 Hz Shock 500 g for 4 ms Crashworthiness 100 g for 23 ms Humidity 95 for 50 hours Penetration 55 lbs from 6 in 25 kg from 15 cm Crush 1 000 lbs 454 kg Altitude 55 000 ft 16 764 m Automatic Activation C406 N Series Primary G Switch 4 5 0 5 ft sec 2 3 g C406 N HM Auxil...

Page 25: ...fective Radiated Power PERP 406 MHz 5 W 37 2 dB PERP or EIRP for 24 hrs 20 to 55 C 121 5 and 243 0 MHz Min 50 mW 17 dBm PERP for 50 hrs 20 to 55 C or 100 mW EIRP 20 dBm for 48 hrs 20 to 55 C Occupied Bandwidth 406 MHz 20 KHz max 121 5 and 243 0 MHz 25 KHz max Spurious Emissions 406 MHz Per RTCA DO 204 121 5 and 243 0 MHz Per CFR Title 47 FCC Part 87 Input Power NAV Function 28 VDC 5 VDC 120 mA Max...

Page 26: ... MHz 1 5 1 Max 121 5 243 0 MHz 1 75 1 or better 406 MHz 1 5 1 or better 121 5 243 0 MHz 2 5 1 or less 406 MHz 1 5 1 or less Polarization Vertical Monopole Radiation Pattern 121 5 and 243 0 MHz Omnidirectional 406 MHz Hemispherical Impedance ohms 50 Nominal Weight 0 45 lbs 0 20 kg 1 40 lbs 0 64 kg 0 80 lbs 0 36 kg 0 31 lbs 0 14 kg Drag 2 9 lbs 1 3 kg 350 KTS 25 000 ft 1 3 lbs 0 6 kg 241 KTS EAS 8 l...

Page 27: ...ion and poor condition d Antenna including trailing antenna for poor condition insecure mounting and improper operation B Canada 1 CAR Part VI Standard 625 Appendix C requires the ELT to be inspected at intervals not exceeding 12 months 2 All maintenance and testing shall be performed in accordance with the requirements of CAR Part V Standard 571 Appendix G which requires a Corrosion inspection b ...

Page 28: ...r inspection and test requirements listed in Table 5 ITEM NO DESCRIPTION BY 1 Coax Cable and Wiring Connections Inspection 2 ELT Mounting Tray and Hardware Inspection 3 ELT Battery Pack Inspection 4 G Switch Functional Check 5a 121 5 MHz Frequency Measurement 5b Audio Modulation Check 5c 121 5 243 0 MHz Power Output Measurement 5d 406 MHz Frequency Measurement 5e 406 MHz Power Output Measurement 5...

Page 29: ...E EXPOSED CIRCUIT BOARD AND CONNECTOR PINS ON THE BOARD CAUTION DO NOT USE CONTACT CLEANER ON ELT COMPONENTS SUCH CHEMICAL AGENTS CAN BE HIGHLY DESTRUCTIVE TO THE MOUNTING HARDWARE AND ELT HOUSING CAUSING CRACKING FRACTURING AND OTHER DAMAGE 1 Check battery cells components and connectors for corrosion and other damage 2 Check wiring for breaks damaged insulation and improper or damaged connection...

Page 30: ...s is added to the battery usage total each time the ELT is activated and de activated If the ELT is left activated beyond the first 30 seconds additional time is added in 30 second increments NOTE Careful planning of the performance tests is necessary to avoid activating the ELT more than necessary Plan the performance testing in a manner that allows tests to be run concurrently and test equipment...

Page 31: ...e the ELT if necessary by placing the control switch in the ON position 3 Wait three minutes 4 Read the displayed amplitude The amplitude must be within the minimum specified for 121 5 MHz in Table 3 Electrical Specifications on page 25 at the terminal output 5 Change to 243 0 MHz and repeat the procedure for 243 0 MHz K 406 MHz Frequency Measurement Item 5d CAUTION POWER OUTPUT IS APPROXIMATELY 3...

Page 32: ...HORT CIRCUIT CONDITION WHICH WILL BLOW THE FUSES IN THE BATTERY PACK THIS TEST SHOULD ONLY BE PERFORMED BY AN EXPERIENCED TECHNICIAN MECHANIC CAUTION ALL ON STATE CURRENT MEASUREMENTS MUST BE MADE WITH THE RF OUTPUT I E ELT ANTENNA CONNECTOR LOADED WITH 50 OHMS RATED FOR 5 WATTS EITHER A RESISTIVE LOAD OR EQUIPMENT WITH 50 OHM IMPEDANCE PADDED WITH 10 DB 5 WATT ATTENUATOR SEE PERFORMANCE TESTING S...

Page 33: ...on reader equivalent to the ETS may be used provided it is capable of receiving and decoding the 406 MHz digital message 4 Deactivate the ELT and read the test message broadcast at turn off A message example is shown in Figure 11 Long 406 MHz Message Example a The test message broadcast by the ELT at turn off contains all the information in an actual distress message except there is a special digi...

Page 34: ... Installation instructions on page 60 2 Perform the following functional check within the first 5 minutes after the hour UTC as required by AC 43 13 1 Chapter 12 12 22 Note 3 3 Notify any nearby control tower of your intentions 4 Tune a receiver usually the aircraft transceiver to 121 5 MHz NOTE An AM radio may be used to receive the signal 5 Activate the ELT by placing the cockpit remote switch i...

Page 35: ...ate the ELT by placing the cockpit remote switch in the ON position NOTE Perform this test within the first five minutes after the hour UTC 4 Listen for 3 audible sweeps on the radio which takes about 1 second An audible signal verifies energy is being transmitted by the antenna 5 Reset the ELT by placing the cockpit remote switch in the ARM position R Inspection and Test Documentation Item 8 1 Ma...

Page 36: ...nnector and tighten as necessary ELT connector pins bent or broken Check condition of connector pins and repair or replace as necessary Connector pins 12 and 13 jumper open internal to remote switch harness connector at ELT end Repair open jumper 2 Flash long short Indicates a programming adapter problem Jumper missing between Pin 3 and Pin 4 of ELT plug or connection interrupted and Programming A...

Page 37: ... 10 12 inches away from upright metal structures Low power output Battery low 3A fuse on battery pack circuit board faulty Improper programming Verify 406 MHz programming Transmitter module faulty Cannot be repaired in field Return to factory for servicing 5 Flash Indicates there is no navigation position data present Aircraft navigation system off Turn on navigation system Faulty system interface...

Page 38: ...rayed insulation Verify integrity of all crimp and solder connections ELT will not turn off Battery too low to support 406 burst and causes circuit to reset Remove battery pack to disable ELT and replace battery pack Turn off ELT using local switch If ELT turns off Defective remote switch harness reset circuit wiring Check wiring continuity and repair as necessary Defective remote switch Replace r...

Page 39: ...ounting frame cap back away from the ELT 4 Lift the protective top cover up away from the ELT and set it aside 5 Disconnect the antenna coax cable from the ELT 6 Disconnect the harness receptacle from the ELT if necessary NOTE The receptacle may disconnect when the mounting frame cap is pulled back 7 Lift the ELT up from the connector end NOTE Careful use of a flat blade screwdriver as a lever wil...

Page 40: ...CTED TO THE ELT VIA SHORT INTERCONNECT HARNESSES WHICH LIMITS THE DISTANCE THE TWO COMPONENTS CAN BE SEPARATED UNTIL THE HARNESSES ARE DISCONNECTED 1 See Figure 13 Battery Pack Removal Figure 13 Battery Pack Removal 2 Turn the ELT upside down such that the battery pack is bottom side up 3 Remove the four retaining screws 4 Lay the ELT on its side while keeping the ELT and battery pack securely hel...

Page 41: ...ch notice ACR Electronics Inc will issue a Return Material Authorization RMA number which then authorizes return of the material or equipment to the following address Repair and Overhaul ACR Electronics Inc 5757 Ravenswood Road Fort Lauderdale FL 33312 USA Phone 954 981 3333 Fax 954 983 5087 a Failure to obtain a RMA number and provide the details required may cause unnecessary delay and or reject...

Page 42: ...126 Paragraph D 1 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 For installations outside the US contact your local civil aviation regulatory agency for details a The remote switch is a requirement of TSO C126 and installation is not optional b The buzzer is a requ...

Page 43: ...ore than 3 feet 1 0 meters from the mounting location 2 DO 182 6 2 2 b recommends that a To maximize the probability of the ELT transmitting a detectable signal after a crash all ELT system components which must survive a crash intact e g transmitter and external antenna should be attached to the airframe in such a manner that the attachment system can support a 100 g load ELT weight x 100 ELT ant...

Page 44: ...TING THE ELT DIRECTLY TO THE AIRCRAFT SKIN INDUCES CRASH HIDING VIBRATIONS AND PROVIDES A VERY POOR MOUNTING SURFACE CAUTION AVOID LOCATING THE ELT WHERE IT WILL BE SUBJECTED TO UNPROTECTED EXPOSURE TO HARSH CHEMICAL FLUIDS SUCH AS DEICING COMPOUNDS THESE TYPES OF CHEMICAL FLUIDS CAN PROMOTE CRACKING AND FRACTURING OF THE ELT MOUNTING FRAME AND HOUSING COMPONENTS BY DEGRADING THE STRUCTURAL INTEGR...

Page 45: ...earance for installation and removal 3 Mount the ELT as far aft as practical but where it can be easily retrieved for maintenance NOTE Statistics show that the tail section of an airplane is likely to be less damaged during a crash therefore providing a good mounting environment for the ELT 4 Additional installation guidance may be found in AC 43 13 2 Chapter 2 Paragraph 28 which specifically addr...

Page 46: ...opter Installations on page 64 for guidelines on ELT orientation in a helicopter 4 Mark the four holes needed for mounting the tray using the tray as a pattern The hole pattern is also illustrated in Figure 14 C406 N Series ELT Outline and Dimensions on page 44 5 Drill the four mounting holes with a 19 or 4 25 mm drill 6 Install the mounting tray with the 8 32 x 5 8 SS pan head Philips screws flat...

Page 47: ...AC 43 13 2 Chapter 3 which deals specifically with antenna installations C Installation NOTE Refer to the airframe manufacturer s written instructions and AC 43 13 2 Chapter 3 for antenna installation practices and requirements 1 Install a doubler plate if necessary to meet rigidity requirements A 20 lb 9 1 kg force applied to the antenna in all directions should not cause an appreciable distortio...

Page 48: ...ARTEX PRODUCTS ACR ELECTRONICS INC DESCRIPTION OPERATION INSTALLATION AND MAINTENANCE MANUAL C406 N C406 N HM Page 48 of 88 Figure 16 Rod Antenna 110 338 and Whip Antenna 110 343 Outlines and Dimensions ...

Page 49: ...ARTEX PRODUCTS ACR ELECTRONICS INC DESCRIPTION OPERATION INSTALLATION AND MAINTENANCE MANUAL C406 N C406 N HM Page 49 of 88 Figure 17 Blade Antennas 110 340 and 110 341 Outlines and Dimensions ...

Page 50: ...33 mm on the panel surface and behind the panel See Figure 18 Remote Switch Outline and Dimensions Figure 18 Remote Switch Outline and Dimensions B Installation 1 Mark out the cutout on the cockpit panel See Figure 18 Remote Switch Outline and Dimensions 2 Fit the switch assembly into the cutout and mark the four screw holes then remove the switch 3 Drill the screw holes with a 28 or 3 6 mm drill ...

Page 51: ...e cockpit remote switch assembly will warn the pilot the ELT is active B Installation 1 See Appendix C Remote Switch Control Panel Option on page 72 for instructions on installation of an alternate modified buzzer used with the optional remote switch control panel in Boeing configurations 2 Fabricate a bracket suitable for supporting the buzzer Buzzer dimensions are shown in Figure 19 Buzzer Outli...

Page 52: ...22 AWG wire size b Shielding is recommended to help prevent EMI and RF interference c Use high quality conductor meeting MIL W 16878 M22759 M27500 or a commercial equivalent acceptable for use in aircraft applications d Provide a Drip Loop in the remote switch harness connection to the ELT to divert moisture from the connector See the list of Acronyms Abbreviations and Definitions on page 3 e Prov...

Page 53: ... reach from the harness ELT plug to the aircraft navigation system ARINC 429 output a Strip approximately 0 19 in 5 mm from the ELT ends b Prepare the wire ends at the navigation system ARINC 429 output in accordance with the manufacturer s written instructions c Dress and tin the bare wires to prevent the strands from fraying during terminal crimping operations 4 See Figure 21 Remote Switch Harne...

Page 54: ...ARTEX PRODUCTS ACR ELECTRONICS INC DESCRIPTION OPERATION INSTALLATION AND MAINTENANCE MANUAL C406 N C406 N HM Page 54 of 88 Figure 21 Remote Switch Harness Wiring Diagram ...

Page 55: ...s provide power and ground for the buzzer Use appropriate means of identification for the wires such that the wires can be readily identified g Prepare the wires as follows 1 Strip approximately 0 15 in 3 mm of insulation from the remote switch wire ends and 0 19 in 5 mm from the ELT wire ends 2 Dress and tin the bare wires to prevent the strands from fraying during terminal crimping operations 6 ...

Page 56: ...ompatible with the aircraft navigation system ARINFC 429 output source 11 Crimp female terminal pins 151 6628 to the cockpit remote switch end as follows NOTE Use Molex crimp tool 63811 3300 or an equivalent tool for 0 062 in terminal pins a Each harness wire b Remote switch ground wire c Remote switch 28 VDC battery power wire 12 Bundle the wiring into a complete harness with breakouts as appropr...

Page 57: ...record of wire identification and pin relationships for reference when terminating the harness wires in the remote switch plug b The airframe ground wire Pin 11 c The buzzer power and ground wires Pins 14 and 21 respectively d The 28 VDC power source wire e The ARINC 429 twisted pair wires Pins 5 and 17 6 Fill the empty plug pin locations as follows NOTE Filling the empty plug pin locations is imp...

Page 58: ...train on the connection G Cockpit Remote Switch Power Connection 1 Connect the remote switch power wire directly to battery power using a 1 amp in line fuse or circuit breaker NOTE If the wire is spliced fabricate the splice in a manner acceptable to the aircraft manufacturer or as described in AC 43 13 1 13 NOTE This power source provides energy for the remote switch assembly LED but has no effec...

Page 59: ...e 59 of 88 J Buzzer Connection 1 Connect the power wire to the buzzer positive terminal 2 Connect the ground wire to the buzzer negative terminal K Remote Switch Final Installation 1 Insert the harness plug into the remote switch receptacle 2 Install the remote switch assembly referring to page 50 for instructions ...

Page 60: ... ELT by fitting the cover locking slots over the locking ears on the ELT 6 Push the cover toward the connector end of the ELT and seat it down in place on the ELT 7 Route the antenna coax cable and remote switch harness plug through the appropriate access holes in the mounting frame cap 452 5066 8 Connect the antenna coax cable to the ELT 9 Connect the 22 pin harness plug to the ELT 10 Slide the m...

Page 61: ... 2 Comply with the GPS FMC manufacturer s written post installation checkout instructions and verify connection to the C406 N Series ELT has not caused any degradation in GPS FMC performance NOTE For all live RF testing of the 406 MHz message output only the test message transmitted at ELT turn off is required to verify C406 N functions See Digital Message Verification on page 33 C Installation Do...

Page 62: ...re 24 Battery Pack Installation Figure 24 Battery Pack Installation 3 Apply a thin coating of non petroleum based silicone grease such as GE G 635 to the rubber seal to facilitate installation and allow the ELT and battery pack to slide together without binding on the rubber seal 4 Lay the battery pack and ELT on their sides such that the two components are aligned but separated enough to allow th...

Page 63: ...ng expected error codes which should be ignored 1 1 flash and 3 flash errors which are generated because the ELT is not installed and connected to the antenna etc 2 A 5 flash error will be indicated if the ELT is programed with a location protocol and is generated because the ELT is not connected to the navigation system and receiving position data c If a 7 flash error code is indicated there is a...

Page 64: ...s of helicopters b Mounting the ELT at this attitude and orientation is currently specified by CAR Part 5 and Subpart 551 104 c Experience has indicated this mounting angle tends to preload the G switch and nuisance activation can occur as a result of severe aircraft maneuvers and abrupt takeoffs and landings 3 ACR Electronics Inc does not recommend installing ELTs designed with a single axis G sw...

Page 65: ... forward See Figure 27 Orientation of ELT for Helicopter Installations NOTE This is the orientation of the primary G switch in the ELT 2 The ELT may be angled downward as much as 25 if necessary NOTE Keep in mind the steeper the mounting angle the more pre load on the primary G switch and the increased likelihood of nuisance activations 3 All other installation requirements contained herein are ap...

Page 66: ...nd longitude position data when connected to aircraft navigation system B Reason for Registration 1 ELT registration aids the Rescue Coordination Center RCC in determining if an actual emergency exists by accessing a database containing the registration information which facilitates inquiries as to the whereabouts of the aircraft existence of a flight plan etc a Owner s name b Address c Telephone ...

Page 67: ... address telephone number etc filed as part of the registration process should be kept up to date C Where to Register 1 In the United States the National Oceanic and Atmospheric Administration NOAA is the registration agency 2 Specific registration web sites and information may be found at a The Artex products web site at www acrartex com which has links to online registration sites and also a lin...

Page 68: ...cription 1 The PA is housed in a back shell extension designed for use with the remote switch harness 22 position plug that mates with the ELT 1 The PA circuitry is encapsulated in the back shell extension and has six wires with pre installed contact sockets that exit the rear of the PA See Figure 28 Programming Adapter 2 A wire path through the back shell allows passage of the remote switch wires...

Page 69: ... PA with installation of the remote switch harness ELT plug Refer to ELT 22 Pin Plug Installation on page 56 2 If the PA is undergoing installation on an aircraft with an existing ELT and remote switch harness perform the following procedure otherwise proceed to Step 3 a Loosen the strain relief clamp and unscrew the strain relief from the plug body b Remove the wiring from the ELT mating plug by ...

Page 70: ...ciated with the ELT installation through the PA wire path 7 Terminate the remote switch harness wires and other wires associated with the ELT installation in ELT plug in accordance with ELT 22 Pin Plug Installation on page 56 B Assembly CAUTION ORIENT THE PA BODY TO THE PLUG SUCH THAT THE WIRE PATH IS AT THE BOTTOM THIS ORIENTATION PREVENTS MOISTURE BUILDUP IN THE PA AND AROUND THE BACK OF THE PLU...

Page 71: ...eptacle See Installation ELT on page 60 Figure 30 Programming Adapter Installation D Aircraft ID Verification Test 1 Apply 28 VDC power to the ELT The ELT is not activated only the 28 VDC power source for the ELT is active which initiates ELT reprogramming Refer to Table 6 on page 37 if a long short 2 flash error code is displayed on the ELT status LED when power is applied 2 Disconnect the antenn...

Page 72: ... instructions and a wiring diagram are provided for installing the standard buzzer with the remote switch control panel The difference between the two buzzer options is the means by which the buzzer is activated and controlled a The modified buzzer is activated by the ELT ON circuit and powered by the aircraft battery b The standard buzzer is controlled and powered by the ELT B Control Panel Descr...

Page 73: ...anel space and wiring have been pre provisioned by the aircraft manufacturer for the control panel however location and installation requirements are defined for installations in aircraft not pre provisioned for this control panel 2 The panel assembly requires a space approximately 5 74 x 2 24 in 146 x 57 mm on the panel or console surface with a depth of 3 00 in 77 mm excluding room for the harne...

Page 74: ...uitable location for the buzzer NOTE The buzzer may be located anywhere in the aircraft however the recommended location is near the ELT as the buzzer is loud enough to be heard outside the aircraft when the engine s is not running When the engine s is running the LED on the cockpit remote switch panel will warn the pilot the ELT is active B Installation 1 Fabricate a bracket suitable for supporti...

Page 75: ...witch panel Pin 9 and or ELT Pin 2 must be connected to remote switch panel Pin 8 if a horn is not installed See Figure 34 Remote Switch Control Panel Wiring Diagram 130 4005 Modified Buzzer on page 76 a Strip approximately 0 15 in 3 mm of insulation from the ends of each of the harness wires b Dress and tin the bare wires to prevent the strands from fraying during terminal crimping operations 3 F...

Page 76: ...ARTEX PRODUCTS ACR ELECTRONICS INC DESCRIPTION OPERATION INSTALLATION AND MAINTENANCE MANUAL C406 N C406 N HM Page 76 of 88 Figure 34 Remote Switch Control Panel Wiring Diagram 130 4005 Modified Buzzer ...

Page 77: ...wires and connector pin relationships such that the wiring can be terminated at the appropriate locations at the ELT mating plug 2 Install the remote switch control panel harness as follows a Bundle the wiring into a complete harness with breakouts as appropriate such that the wiring can be properly supported and attached to the airframe Refer to the aircraft manufacturer s written instructions or...

Page 78: ...ire to remote switch control panel connector Pin 8 Coordinate with Remote Switch Control Panel Wiring Installation Step 1 on page 75 b YELLOW wire to ELT mating plug Pin 7 Coordinate with Modified Buzzer Wiring Fabrication on page 77 c RED wire to the 28 VDC aircraft battery power source d BLACK wire to aircraft ground See Airframe Ground Connections on page 58 E Standard Buzzer Installation See F...

Page 79: ...ARTEX PRODUCTS ACR ELECTRONICS INC DESCRIPTION OPERATION INSTALLATION AND MAINTENANCE MANUAL C406 N C406 N HM Page 79 of 88 Figure 35 Remote Switch Control Panel Wiring Diagram 130 4004 Buzzer ...

Page 80: ... the post installation ELT testing requirements in Aircraft ID Verification Test on page 71 2 Place the remote switch in the ON position 3 Verify the cockpit remote switch panel light illuminates immediately If the light fails to illuminate immediately and stay on steady recheck the interface wiring and connections between the ELT and the remote switch control panel 4 Place the remote switch in th...

Page 81: ...tion in the applicable IPL figure to find attaching hardware and related assembly parts 3 In cases where multiple item numbers are shown on an illustration for the same item there is more than one part number option associated with that item 2 Manufacturer Name and Address A Ordering Information 1 Approved parts may be ordered from ACR Electronics or any authorized dealer CONTACT INFORMATION Sales...

Page 82: ...n 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 4 The terms defined below are used when applicable to indicate the interchangeability of pa...

Page 83: ...s interchangeable with the item number designated in the notation D UPA Units Per Assembly Column 1 The quantity shown in this column represents the units required for one next higher assembly or when referring to attaching parts the quantity to attach one such item 2 The abbreviation RF reference indicates the end item assembly is listed for reference purposes ...

Page 84: ... FIG ITEM PART 1234 NOMENCLATURE UPA Figure 36 01 452 3052 Protective Top Cover Assembly 1 02 452 5066 Mounting Frame Cap Assembly 1 03 452 5050 Mounting Tray Assembly 1 ATTACHING PARTS 201 0810 Screw PHP 8 32 x 5 8 SS 4 246 0008 Washer Flat 1 2 SS 8 4 247 0800 Washer Lock Internal Tooth SS 8 4 241 0832 Nut 8 32 x 1 4 Hex SS 4 04 453 5060 C406 N Main Assembly 1 05 453 5061 C406 N HM Main Assembly ...

Page 85: ...RATION INSTALLATION AND MAINTENANCE MANUAL C406 N C406 N HM Page 85 of 88 FIG ITEM PART 1234 NOMENCLATURE UPA 591 0999 Label Hex Code 1 591 049 01 Label Country Code 1 06 452 0133 406 Lithium Battery Pack 1 ATTACHING PARTS 217 0606 Screw with O Ring 4 ...

Page 86: ...ectrical Components FIG ITEM PART 1234 NOMENCLATURE UPA Figure 37 01 345 6196 04 Switch Cockpit Remote 1 ATTACHING PARTS 201 0408 Screw PHP 4 40 x 1 4 SS 4 247 0400 Washer Internal Lock SS 4 4 241 0440 Nut 4 40 x 1 4 Hex SS 4 02 453 0161 Control Panel G737 Optional 1 591 0428 Label ELT Cautionary Use Advisory 1 03 151 5009 Plug 9 Pin 1 ...

Page 87: ...male 0 062 Dia 9 04 150 5061 Connector 22 Position Plug Shell Size 12 1 04A 151 6657 Contact 22D Crimp Socket 22 04B 151 6658 Plug Sealing Grommet 13 05 151 5061 Strain Relief Shell Size 12 1 06 453 5078 Programming Adapter Programmed Optional 1 07 453 5068 Programming Adapter Blank ALT 1 08 130 4004 Buzzer ELT Audible Alert 1 09 130 4005 Horn Mod ELT Buzzer Optional Use with Item 02 1 ...

Page 88: ...e 88 of 88 Figure 38 Antennas FIG ITEM PART 1234 NOMENCLATURE UPA Figure 38 01 110 340 Antenna Tri Band CI319 1 Single Input 1 02 110 341 Antenna Tri Band Blade 16 21 Single Input 1 03 110 338 Antenna Tri Band CI319 1 Single Input 1 04 110 343 Antenna Tri Band Whip 21 41 1 611 6013 04 Cable Coax BNC to BNC 6 ft 1 ...

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