COBHAM ELT/NAV INTERFACE Abbreviated Component Maintenance Manual
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COBHAM ELT/NAV INTERFACE Abbreviated Component Maintenance Manual

COBHAM ELT/NAV INTERFACE Abbreviated Component Maintenance Manual

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Abbreviated Component Maintenance Manual
This manual includes data for the equipment that follows:
Component
ELT/NAV Interface
ELT/NAV
INTERFACE
Part No.
453-6500
25-69-10
Model No.
N/A
Wulfsberg Electronics Division
6400 Wilkinson Rd., Prescott, AZ 86301
Cage Code: 1B7G3
570-4602 Rev. F
Initial Issue FEB 10/1998
Page 1 of 58
APR 06/10

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  • Page 1 ELT/NAV INTERFACE Abbreviated Component Maintenance Manual This manual includes data for the equipment that follows: Component Part No. Model No. ELT/NAV Interface 453-6500 Wulfsberg Electronics Division 6400 Wilkinson Rd., Prescott, AZ 86301 Cage Code: 1B7G3 25-69-10 Page 1 of 58 APR 06/10 570-4602 Rev.
  • Page 2 COBHAM AVIONICS WULFSBERG ELECTRONICS ABBREVIATED COMPONENT MAINTENANCE MANUAL 453-6500 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. Wulfsberg Electronics makes no warranty, expressed or implied, with regard to this manual, including but not limited to any implied warranties of mer- chantability, fitness for a particular purpose, and non-infringement.

  • Page 3: Record Of Revisions

    COBHAM AVIONICS WULFSBERG ELECTRONICS ABBREVIATED COMPONENT MAINTENANCE MANUAL 453-6500 RECORD OF REVISIONS REV NO. DCN NO. DCN DATE REV NO. DCN NO. DCN DATE RELEASE Feb 10/1998 ECO 811 Apr/24/1998 ECO 887 Jul 23/1998 ECO 948 Oct 14/1998 ECO 1167...
  • Page 4 COBHAM AVIONICS WULFSBERG ELECTRONICS ABBREVIATED COMPONENT MAINTENANCE MANUAL 453-6500 THIS IS A BLANK PAGE 25-69-10 Page 4 of 58 APR 06/10...

  • Page 5: Service Bulletin List

    COBHAM AVIONICS WULFSBERG ELECTRONICS ABBREVIATED COMPONENT MAINTENANCE MANUAL 453-6500 SERVICE BULLETIN LIST SERVICE ISSUE MANUAL MANUAL SUBJECT BULLETIN NO DATE REV NO REV DATE 25-69-10 Page 5 of 58 APR 06/10...
  • Page 6 COBHAM AVIONICS WULFSBERG ELECTRONICS ABBREVIATED COMPONENT MAINTENANCE MANUAL 453-6500 THIS IS A BLANK PAGE 25-69-10 Page 6 of 58 APR 06/10...

  • Page 7: List Of Effective

    COBHAM AVIONICS WULFSBERG ELECTRONICS ABBREVIATED COMPONENT MAINTENANCE MANUAL 453-6500 LIST OF EFFECTIVE PAGES SUBJECT PAGE DATE SUBJECT PAGE DATE Title Page Apr 06/10 Apr 06/10 Notices Apr 06/10 Test and Fault Isolation Apr 06/10 Record of Revisions Apr 06/10 Apr 06/10...
  • Page 8 COBHAM AVIONICS WULFSBERG ELECTRONICS ABBREVIATED COMPONENT MAINTENANCE MANUAL 453-6500 THIS IS A BLANK PAGE 25-69-10 Page 8 of 58 APR 06/10...

  • Page 9: Table Of Contents

    A. ELT/NAV Interface ........
  • Page 10 1. ELT/NAV Interface ........
  • Page 11 COBHAM AVIONICS WULFSBERG ELECTRONICS ABBREVIATED COMPONENT MAINTENANCE MANUAL 453-6500 ILLUSTRATED PARTS LIST 1. Introduction ............. 53 A.
  • Page 12 COBHAM AVIONICS WULFSBERG ELECTRONICS ABBREVIATED COMPONENT MAINTENANCE MANUAL 453-6500 THIS IS A BLANK PAGE 25-69-10 Page 12 of 58 APR 06/10...

  • Page 13: List Of Figures

    ELT/NAV Interface Mechanical Installation ........
  • Page 14 COBHAM AVIONICS WULFSBERG ELECTRONICS ABBREVIATED COMPONENT MAINTENANCE MANUAL 453-6500 THIS IS A BLANK PAGE 25-69-10 Page 14 of 58 APR 06/10...

  • Page 15: Introduction

    Removal Installation Illustrated Parts List In the United States, the ELT/NAV Interface 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 ELT/NAV Interface must be installed and maintained in accordance with the requirements herein and Canadian Aviation Regulations (CAR), Part V and other CAR airworthiness requirements, as applicable.

  • Page 16: Model Description

    2. Model Description SUBTASK 25-69-10-990-001 ELT/NAV Interface The ELT/NAV Interface provides the means to transmit position data received from the aircraft navigation system to the ELT. The ELT/NAV Interface is available in two installation configurations: 24-bit auto reprogramming and position data, or Position data only.

  • Page 17: Approvals

    FAA TSO C126 System Component NOTE: Details of TSO certification for the ELT/NAV Interface are available in the “TSO Qualification Test Report for the ELT/NAV Interface System” (Document 6288). The conditions and tests required for TSO approval of this article are minimum performance standards.
  • Page 18 COBHAM AVIONICS WULFSBERG ELECTRONICS ABBREVIATED COMPONENT MAINTENANCE MANUAL 453-6500 CATEGORY SECTION DESCRIPTION 15.0 Magnetic Effect 16.0 Power Input 17.0 Voltage Spike 18.0 Audio Frequency Susceptibility 19.0 Induced Signal Susceptibility 20.0 Radio Frequency Susceptibility 21.0 Emission of Radio Frequency Energy 22.0 Lightning 23.0...

  • Page 19: List Of Acronyms, Abbreviations, And Definitions

    COBHAM AVIONICS WULFSBERG ELECTRONICS ABBREVIATED COMPONENT MAINTENANCE MANUAL 453-6500 TASK 25-69-10-990-804 4. List of Acronyms, Abbreviations, and Definitions SUBTASK 25-69-10-990-001 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 20 COBHAM AVIONICS WULFSBERG ELECTRONICS ABBREVIATED COMPONENT MAINTENANCE MANUAL 453-6500 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 anytime a major repair and/or major altera- tion is performed on an aircraft.

  • Page 21: References

    COBHAM AVIONICS WULFSBERG ELECTRONICS ABBREVIATED COMPONENT MAINTENANCE MANUAL 453-6500 TASK 25-69-10-990-805 5. References SUBTASK 25-69-10-990-001 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 22: Other Documents

    The following documents are available on-line at the Artex web site at www.artex.net, or from Wulfsberg Electronics upon request. 570-1000, “ELT Test Set (ETS) Operation Manual” 6288, “TSO Qualification Test Report for the ELT/NAV Interface System” 25-69-10 Page 22 of 58...

  • Page 23: Description And Operation

    AIRCRAFT POWER Figure 1. ELT/NAV Interface System Integration The ELT/NAV Interface is designed to work with “ELT with 24-bit Address” and “ELT with Serial Number” location protocols. In both cases, the ELT/NAV Interface provides position coordinates (latitude and longitude) to the ELT.

  • Page 24: Physical Description

    Position data is continually updated and overwritten in the ELT RAM as long as the ELT is idle and waiting for an activation signal. If power to the ELT/NAV Interface is lost, the ELT holds the last known position data for 30 seconds and the ELT must be activated within that time frame to transmit position information.

  • Page 25: 24-Bit Address Reprogramming Functionality

    This capability facilitates swapping ELTs from one aircraft to another when performing routine maintenance, etc., without losing a significant amount of time reprogramming ELTs. If the ELT is not programmed with a 24-bit address location protocol, the ELT/NAV Interface will not reprogram the ELT.

  • Page 26: Navigation System Interface Requirements

    2. Navigation System Interface Requirements SUBTASK 25-69-10-870-001 ARINC 429 Latitude and Longitude Data Input The ELT/NAV Interface will accept signals “A” and “B” from any ARINC 429 navigation system. The interface looks for labels “310” (latitude) and “311” (longitude), which contain position data.

  • Page 27: Operation

    +28 VDC power source. When +28 VDC power is applied to the ELT/NAV Interface, it reads the ELT 24-bit address data and compares it to the 24-bit address data hard wired to the ELT/NAV Interface.

  • Page 28: Specifications

    ABBREVIATED COMPONENT MAINTENANCE MANUAL 453-6500 TASK 25-69-10-870-804 4. Specifications SUBTASK 25-69-10-870-001 Physical and Environmental Table 3 lists the ELT/NAV Interface physical and environmental specifications. Table 3. Physical and Environmental Specifications PARAMETER CHARACTERISTIC Temperature (Storage) -55° C to +85° C Temperature (Operating) -20°...

  • Page 29: Input/Output

    COBHAM AVIONICS WULFSBERG ELECTRONICS ABBREVIATED COMPONENT MAINTENANCE MANUAL 453-6500 SUBTASK 25-69-10-870-002 Input/Output Table 4 lists the ELT/NAV Interface input/output specifications. Table 4. Input/Output Specifications DESCRIPTION CHARACTERISTIC +28 VDC ±5 VDC P2-1 Power Input 300 mA max. Vmax = 6.0 VDC P2-2 5.6 VDC Output...

  • Page 30: Electrical

    COBHAM AVIONICS WULFSBERG ELECTRONICS ABBREVIATED COMPONENT MAINTENANCE MANUAL 453-6500 SUBTASK 25-69-10-870-003 Electrical Table 5 lists the ELT/NAV Interface electrical specifications. Table 5. Electrical Specifications PARAMETER CHARACTERISTIC Power Input Per RTCA/DO-160C Voltage Spike Per RTCA/DO-160C Audio Frequency Susceptibility Per RTCA/DO-160C Induced Signal Susceptibility...

  • Page 31: Test And Fault Isolation

    SUBTASK 25-69-10-990-002 Regulatory Requirements The ELT/NAV Interface is considered an integral part to the ELT system, and as such is subject to the periodic inspection and testing required by the regulatory authorities governing the installation, operation, and maintenance of ELT systems.

  • Page 32: Periodic Inspection

    Inspect the P2 interface wiring between the ELT/NAV Interface and the ELT for: Security, Evidence of damage, and Evidence of insulation deterioration. Inspect the P1 24-bit address wiring between the ELT/NAV Interface and ground or 24-bit address switch block for: Security, Damage, Insulation deterioration, and Grounding points for corrosion.

  • Page 33: Periodic Testing

    Notify any nearby control tower of your intentions. Turn on the aircraft navigation system and verify it is receiving valid position data. Verify the ELT/NAV Interface is powered up and has at least 30 seconds to initialize. Tune a receiver, usually the aircraft transceiver, to 121.5 MHz.

  • Page 34: Post-Installation Functional Testing

    Turn on the aircraft navigation system and verify it is receiving valid position data. Verify the ELT/NAV Interface is powered up and has at least 30 seconds to initialize. Set the 453-1000 ELT Test Set (ETS) beacon reader to receive and decode the ELT digital message.

  • Page 35: Figure 3. Examples Of Location Protocol 406 Mhz Messages

    If the ELT is programmed with a location (long message) protocol and disconnected from the ELT/NAV Interface or the aircraft navigation system is not transmitting position data, the message will indicate “Position Invalid” in lieu of position data. See "Figure 4.

  • Page 36: 24-Bit Address Reprogramming Verification Test

    453-6500 SUBTASK 25-69-10-750-002 24-Bit Address Reprogramming Verification Test This test procedure verifies the ELT/NAV Interface has updated the aircraft 24-bit address ID in the ELT programming. Apply power to the ELT/NAV Interface, while the ELT remains off (i.e, inactive). Re- programming takes place within 30 seconds of power up.

  • Page 37: Post-Reprogramming Check

    AC 43.13-1, Chapter 12, § 12-22, Note 3. Notify any nearby control tower of your intentions. Verify the ELT/NAV Interface is powered up and has at least 30 seconds to initialize. NOTE: The aircraft navigation system is NOT turned on for this test. For ELT registration purposes, the 15 digit hex ID shall contain the “default”...

  • Page 38: Fault Isolation

    SYMPTOM PROBABLE CAUSE POSSIBLE SOLUTION Aircraft navigation system off Turn on navigation system Turn on power No power to ELT/NAV Interface Check breaker/fuse ELT and remote switch LED Check for frayed insulation display 5-flash error causing short or ground (No navigation data present)

  • Page 39: Removal

    See "Figure 5. ELT/NAV Interface Removal". Disconnect ELT/NAV Interface plugs: P2, and P1, if installed. Install connector covers to protect the ELT/NAV Interface receptacles. Remove the screws attaching the ELT/NAV interface to the mounting structure. ELT (REF.) REMOVE SCREWS (6 PLCS) MOUNTING STRUCTURE (REF.)

  • Page 40: Material Or Equipment Return

    COBHAM AVIONICS WULFSBERG ELECTRONICS ABBREVIATED COMPONENT MAINTENANCE MANUAL 453-6500 TASK 25-69-10-500-801 2. Material or Equipment Return SUBTASK 25-69-10-510-001 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 41: Installation

    The regulatory requirements and guidelines for ELT installations discussed in the following subtasks are applicable to installation of the ELT/NAV Interface and must be applied to the ELT/NAV Interface. Where the word “ELT” is used in the following subtasks, read “ELT/NAV Interface”.

  • Page 42: Rtca

    COBHAM AVIONICS WULFSBERG ELECTRONICS ABBREVIATED COMPONENT MAINTENANCE MANUAL 453-6500 SUBTASK 25-69-10-990-006 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.

  • Page 43: Mechanical

    COMPOUNDS. THESE TYPES OF CHEMICALS MAY CAUSE DAMAGE TO FASTENERS AND ELECTRICAL COMPONENTS, AS WELL AS ELECTRICAL CONNECTOR CORROSION. Mount the ELT/NAV Interface within 2 feet (610 mm) of the ELT, such that the interface harness does not exceed 3 feet (914 mm) including strain relief.

  • Page 44: Figure 7. Elt/Nav Interface Mechanical Installation

    Drill the six mounting holes with a #19 or 4.25 mm drill. Install the ELT/NAV Interface chassis with the 8-32 x 5/8” SS pan head phillips screws, flat washers, lock washers, and nuts provided in the installation kit (455-6500), as shown in "Figure 7.

  • Page 45: Wiring

    Minimum 24 AWG wire size for 24-bit address reprogramming ground wires. Switch block, if used, must be located less than 3 feet (0.9 m) from the ELT/NAV Interface and wiring must not exceed 3 feet (0.9 m) including strain relief.

  • Page 46: Elt And Navigation System Interfaces

    PIN INSERTION VIEW Figure 8. ELT/NAV Interface Wiring Diagram Fabricate a shielded 4-wire harness long enough to reach between the ELT/NAV Interface and the ELT, including strain relief and drip loop. Strip approximately 0.15 in. (3 mm) of insulation from the ELT receptacle end of the four cable wires and 0.19 in.

  • Page 47: Figure 9. Wiring Installation At Elt End

    ABBREVIATED COMPONENT MAINTENANCE MANUAL 453-6500 Fabricate a ground wire of sufficient length to reach from the ELT/NAV Interface to a suitable aircraft ground location. Strip approximately 0.19 in. (5 mm) of insulation from each end of each of the ground wire.

  • Page 48: Figure 10. Elt/Nav Interface Wiring Installation

    COBHAM AVIONICS WULFSBERG ELECTRONICS ABBREVIATED COMPONENT MAINTENANCE MANUAL 453-6500 (11) Feed the interface wires at the ELT/NAV Interface end through the 183-6503 strain relief. See "Figure 10. ELT/NAV Interface Wiring Installation". P1 #18 31-PIN PLUG CONTACT PINS #18 STRAIN RELIEF...

  • Page 49: 24-Bit Address Reprogramming - Hard Wire Method

    453-6500 (18) Connect the P2 plug to the ELT/NAV Interface. (19) Install the 150-6504 protective cap on the ELT/NAV Interface P1 plug, if the 24-bit address reprogramming option is not used. (20) Test the installation in accordance with the procedure outlined in SUBTASK 25-69-10-750-001, on page 34.

  • Page 50: 24-Bit Address Reprogramming - Switch Block Method

    (12) Test the installation in accordance with SUBTASK 25-69-10-750-002, on page 36. SUBTASK 25-69-10-450-003 24-Bit Address Reprogramming – Switch Block Method Locate and install the 24-bit switch block less than 3 feet (0.9 m) from the ELT/NAV Interface in accordance with the manufacturer’s written instructions. Prepare twenty-six (26) wires as follows: Strip approximately 0.19 in.
  • Page 51 (10) Verify the wiring P1 plug pin locations and block switch positions are correct based on the applicable 24-bit address. See "Figure 8. ELT/NAV Interface Wiring Diagram”, on page 46. (11) Support the wiring by clamping or other suitable means, such that the wiring is properly supported and protected from chaffing and strain.
  • Page 52 COBHAM AVIONICS WULFSBERG ELECTRONICS ABBREVIATED COMPONENT MAINTENANCE MANUAL 453-6500 THIS IS A BLANK PAGE 25-69-10 Page 52 of 58 APR 06/10...

  • Page 53: Illustrated Parts List

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

  • Page 54: Manufacturer Name And Address

    COBHAM AVIONICS WULFSBERG ELECTRONICS ABBREVIATED COMPONENT MAINTENANCE MANUAL 453-6500 TASK 25-69-10-990-802 2. Manufacturer Name and Address SUBTASK 25-69-10-990-001 Ordering Information Approved parts may be ordered from Wulfsberg Electronics, or any authorized dealer. CONTACT INFORMATION Sales, Wulfsberg Electronics 6400 Wilkinson Dr.

  • Page 55: Explanation Of Detailed Parts List Entries

    COBHAM AVIONICS WULFSBERG ELECTRONICS ABBREVIATED COMPONENT MAINTENANCE MANUAL 453-6500 TASK 25-69-10-990-803 3. Explanation of Detailed Parts List Entries SUBTASK 25-69-10-990-001 Fig # & Item Column The first number at the top of the column is the figure number of the corresponding illustration.

  • Page 56: Upa (Units Per Assembly) Column

    COBHAM AVIONICS WULFSBERG ELECTRONICS ABBREVIATED COMPONENT MAINTENANCE MANUAL 453-6500 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 57: Detailed Parts List

    COBHAM AVIONICS WULFSBERG ELECTRONICS ABBREVIATED COMPONENT MAINTENANCE MANUAL 453-6500 TASK 25-69-10-990-804 4. Detailed Parts List Figure 12. ELT/NAV Interface Installation FIG # ITEM PART # 1234 NOMENCLATURE 453-6500 Main Assembly, ELT/NAV Interface ATTACHING PARTS 201-0810 Screw, PHP 8-32 x 5/8” SS 246-0008 Washer, Flat 1/2”...

  • Page 58: Figure 13. Electrical Components

    COBHAM AVIONICS WULFSBERG ELECTRONICS ABBREVIATED COMPONENT MAINTENANCE MANUAL 453-6500 Figure 13. Electrical Components ELT/NAV INTERFACE (REF.) FIG # ITEM PART # 1234 NOMENCLATURE 150-6503 Connector, #16 Circular (24-Position) 151-2100 . Contact, Socket #20 183-6503 Strain Relief, #16 150-6502 Connector, #18 Circular (31-Position) 151-2101 .

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