-------------------- ------------- -- -------------------------- ------------------- --------------------
  **SYSTEM SUPPORT                                                                     
  DIRECTIVE**                                                                          

  **ARSR4**                                                        **SSM-ARSR4-016**   

  **TYPE FA-10307,                                                                     
  FA-10308,                                                                            
  FA-10312,**                                                                          
  **FA-10331**                                                                         

                                                                                       

  **System Support     MODIFICATON                                                     Highlights
  Modification**       TO ADD                                                          
                       ATCBI-6                                                         
                       INTERFACE TO                                                    
                       THE ARSR-4                                                      

                                                                                       

                                                                                       **XX/XX/XXXX**
  -------------------- ------------- -- -------------------------- ------------------- --------------------

1.  **PURPOSE.** This system support modification (SSM) provides
    instructions to modify the Air Route Surveillance Radar-4 (ARSR-4)
    in order to support the Air Traffic Control Beacon Interrogator-6M
    (ATCBI-6M).

2.  **DISTRIBUTION.**

    a.  This document is made available to sites with this Facility,
        Service, and Equipment Profile (FSEP): ARSR-4.

    b.  Administrative offices do not receive printed copies since 2004.
        Documents and reports are available at <http://nas.amc.faa.gov/>
        under "Technical Documentation".

    c.  FSEP facilities receive printed copies through accurate FSEP and
        Directive Distribution System (DDS) records. Ask your Service
        Area System Management Offices (SMOs) to correct inaccurate
        records. Using Lotus Notes, SMOs can send e-mail to
        [9-AMC-Publications-Request@faa.gov]{.underline} to get a
        maximum of 5 copies.

3.  **WITHDRAWALS.** None.

4.  **REFERENCES.**

    a.  Technical Instruction Book TI 6340.23, Instruction Book Field
        Maintenance, ARSR-4 System, Type FA-10331, Sections 1-10, Volume
        1.

    b.  Technical Instruction Book TI 6340.38, Instruction Book Field
        Maintenance, ARSR-4 System, Mode-4 Vault No. 1 (Unit 1) Type
        FA-10307, Mode-4 Vault No. 2 (Unit 2) Type FA-10308, Sections
        1-11.

    c.  Technical Instruction Book TI 6340.35, Troubleshooting Support
        Data, Field Maintenance, ARSR-4 System, Data Processor Unit
        (Unit 6), Type FA-10312, Section 11, Volume 2.

    d.  Interface Control Document ATCBI-6-TO16-SE13-007, Air Traffic
        Control Beacon Interrogator Replacement (ATCBI-6), Interface
        Control Document for the ATCBI-6 to ARSR-4 KIR Vault.

    e.  Configuration Control Decision (CCD) No. N30611, ARSR-4
        Modifications to Support the ATCBI-6M.

    f.  System Documentation Release (SDR) SDR-ARSR4-009, Update to TI
        6340.35 to Merge Major and Minor Version Software Builds.

    g.  Greenlee document IM 1069, Safety Instructions and Parts List
        for 229, 231, RS232, 234, and 238 Connector Punches.

5.  **BACKGROUND.**

    a.  In order to successfully perform mode-4 interrogations, the
        ATCBI-6M requires two additional signals from the mode 4
        cryptographic device (KIR) that are not in the existing mode-4
        vault wiring harness. Specifically, the ATCBI-6M requires the
        signals KIR\$INTLK and KIR\$INTLKRTN added to cable 1W1 of
        mode-4 vault no. 1. Refer to Interface Control Document
        ATCBI-6-TO16-SE13-007, paragraph 3.2.9, for more information on
        these signals.

    b.  Two wires will be added to the harness between 1W1P2 and 1W1P3
        to convey this signal. These are from 1W1P2-28 to 1W1P3-12 and
        from 1W1P2-30 to 1W1P3-24.

    c.  The mode-4 vault status signals are currently conveyed to the
        ARSR-4 from mode-4 vault no.1 to the ARSR-4 data processor
        through W52. Some of these signals are required for mode-4
        operation by the ATCBI-6M. To provide the ARSR-4 the signals
        needed for monitoring vault status while also providing the
        ATCBI-6M the signals needed for mode-4 interrogation, a new
        cable (W52A) will be added between the vault and the ATCBI-6M.
        Another new cable (W52B) will be added in the mode-4 vault to
        distribute the signals between the ARSR-4 and ATCBI-6M.

    d.  The ATCBI-6M has an input for manual mode-4 interrogation. With
        the installation of the ATCBI-6M, the current LDC switch will
        not work. A new d-sub connector and a switch will be added to
        the ATCBI-6M KIR Interface Unit to locally interrogate mode-4 at
        the ATCBI-6M console.

    e.  The ATCBI-6M requires two users set up on the ARSR-4 to receive
        search and weather data. One user will receive first function
        search data and strobes while the other will receive second
        function search data and weather.

    f.  After installation of the ATCBI-6M and decommissioning of the
        Air Traffic Control Interrogator 5 (ATCBI-5), there are alarms
        on the ARSR-4 that must be turned off in order to run alarm
        free.

6.  **APPLICATION.** This modification applies to all ARSR-4 sites.

7.  ***MATERIALS REQUIRED.** These* *materials are necessary to do the
    modification on each unit. They are available as a kit, NSN
    0000-00-012-1779.*

+-----------------------------------+-----------------+---------------+
| [Description]{.underline}         | [N              | [Quantity     |
|                                   | SN]{.underline} | ]{.underline} |
+-----------------------------------+-----------------+---------------+
| a.  Cable Assembly, mode-4        |                 | 1             |
|     harness modification          |                 |               |
+-----------------------------------+-----------------+---------------+
| b.  Installation/Removal tool,    |                 | 1             |
|     for sockets M39029/5-115      |                 |               |
|     (M81969/14-02)                |                 |               |
+-----------------------------------+-----------------+---------------+
| c.  Installation/Removal tool,    |                 | 1             |
|     for pins M39029/64-369        |                 |               |
|     (M81969/1-02)                 |                 |               |
+-----------------------------------+-----------------+---------------+
| d.  Zip tie, 14.7-inch, low       |                 | 24            |
|     profile                       |                 |               |
+-----------------------------------+-----------------+---------------+

+-----------------------------------+-----------------+---------------+
| [Description]{.underline}         | [N              | [Quantity     |
|                                   | SN]{.underline} | ]{.underline} |
+-----------------------------------+-----------------+---------------+
| e.  Wire, test, with sockets      | N/A             | 2             |
|     M39029/63-368. Color code     |                 |               |
|     OR/BL/GY                      |                 |               |
+-----------------------------------+-----------------+---------------+
| f.  Wire, test, with pins         | N/A             | 2             |
|     M39029/64-369. Color code     |                 |               |
|     OR/BL/WH                      |                 |               |
+-----------------------------------+-----------------+---------------+
| g.  Cable assembly, W52B,         |                 | 1             |
|     3-headed, ribbon cable        |                 |               |
+-----------------------------------+-----------------+---------------+
| h.  Cable assembly, W52A, 50      |                 | 1             |
|     foot, one end terminated      |                 |               |
+-----------------------------------+-----------------+---------------+
| i.  Label (J4)                    |                 | 1             |
+-----------------------------------+-----------------+---------------+
| j.  Pins, M39029/64-369           |                 | 5             |
|     (OR/BL/WH), for spares        |                 |               |
+-----------------------------------+-----------------+---------------+
| k.  Sockets, M39029/63-368        |                 | 5             |
|     (OR/BL/GY), for spares        |                 |               |
+-----------------------------------+-----------------+---------------+
| l.  Sockets, M39029/5-115         |                 | 2             |
|     (BR/BR/GN), for spares        |                 |               |
+-----------------------------------+-----------------+---------------+
| m.  Label, heat shrink,           |                 | 1             |
|     (W52AP2/1A2J4)                |                 |               |
+-----------------------------------+-----------------+---------------+
| n.  Connector, DB-50F             |                 | 1             |
|     (M24308/2-5F)                 |                 |               |
+-----------------------------------+-----------------+---------------+
| o.  Backshell, metal, DB-50, kit, |                 | 1             |
|     Amp 745175-6                  |                 |               |
+-----------------------------------+-----------------+---------------+
| p.  Ferrule, crimp, split ring,   |                 | 1             |
|     Amp 745508-6                  |                 |               |
+-----------------------------------+-----------------+---------------+
| q.  Screw locks, male,            |                 | 2             |
|     M24308/25-10F                 |                 |               |
+-----------------------------------+-----------------+---------------+
| r.  Switch assembly, mode-4,      |                 | 1             |
|     DB-25                         |                 |               |
+-----------------------------------+-----------------+---------------+
| s.  Screw locks, female, .250 in. |                 | 3 sets        |
|     long, AMP 745503-3            |                 |               |
+-----------------------------------+-----------------+---------------+

8.  **SOURCE OF MATERIALS.** Use the FAA Logistics and Inventory System
    to get the materials. Only use the materials to do the modification
    in paragraph 6. Do not order more kits to get individual parts. If
    more materials are necessary, order them individually.

9.  **SPECIAL TOOLS AND TEST EQUIPMENT REQUIRED.**

    a.  Volt Ohm Meter (VOM)

    b.  Wrench, open end, 11/32-inch

    c.  Screwdriver, Philips, no. 2

    d.  Screwdriver, standard, no. 1

    e.  Drop light

    f.  Diagonal cutters

    g.  Stepladder, 6'

    h.  Pencil, marking

    i.  Punch, automatic

    j.  Drill, 3/8-inch

    k.  Drill bit, 7/16-inch, reduced shank, 3/8-inch drive

    l.  Drill bit, 1/8-inch

    m.  Nut driver, 3/16-inch

    n.  Heat gun

    o.  Pliers, channel lock, medium

    p.  Hole punch set, D-50, Greenlee 34444

    q.  Ratcheting wrench, Greenlee 34941 or equivalent

    r.  Grease, AeroShell 17, molybdenum disulfide, MIL-G-21164D
        qualified

10. **PROCEDURE TO BE PERFORMED BY.** Certified technicians or personnel
    specified by the Service Area office must do the procedure.

11. **WHEN MODIFICATION IS TO BE PERFORMED.** There are four procedures
    to complete.

    a.  The first two procedures are the mode-4 vault wiring harness
        modification and the ATCBI-6M user setup. These two must be done
        as soon as practical after receipt of this modification.

    b.  The third procedure is the installation of the ATCBI-6M mode-4
        vault cable. This requires a d-sub hole punch, which is not
        supplied in the modification kit. The procedure must be done
        when the ATCBI-6M Air Route Radar Systems optimization team is
        on site.

    c.  The fourth procedure is to decommission the ATCBI-5. This must
        be done when the ATCBI-6M is commissioned and the ATCBI-5 is
        removed.

12. **ESTIMATED TIME REQUIRED.**

    a.  The first procedure to modify the mode-4 vault wiring harness
        requires two persons, 4 hours per facility.

    b.  The second procedure to setup the ATCBI-6M search data users
        requires one person, 4 hours per facility. These two procedures
        can be completed together in one 8 hour step or individually. A
        full service outage is necessary during both procedures.

    c.  The third procedure to install the ATCBI-6M vault cable requires
        two persons, 4 hours per facility. A full service outage is
        necessary during this procedure.

    d.  The fourth procedure to decommission the ATCBI-5 requires one
        person, 4 hours per facility. A full service outage is necessary
        for this procedure. Estimated time does not include modification
        preparation or updating of the instruction books.

13. **DISPOSITION OF SURPLUS PARTS.** None.

14. **PROCEDURE.**

    Start the mode-4 vault wiring harness modification procedure in
    appendix 3.

    a.  Continue with Appendix 4, Test After Modification Procedure for
        the Mode-4 Vault Wiring Harness Modifications.

    b.  Complete the ATCBI-6M User Setup Procedure in appendix 5.

    c.  Continue with Appendix 6, the Test After Modification Procedure
        for the ATCBI-6M User Setup.

    d.  When the ATCBI-6M optimization team is on site, complete the
        ATCBI-6M Mode-4 Vault Cable Modification in appendix 7.

    e.  Continue with Appendix 8, the Test After Modification Procedure
        for the ATCBI-6M Mode-4 Vault Cable Modification.

    f.  When the ATCBI-5 is decommissioned, complete the modification
        procedure in appendix 9.

    g.  Continue with Appendix 10, the Test After Modification Procedure
        for ATCBI-5 Decommissioning.

15. **TEST AFTER MODIFICATION.**

    a.  The mode-4 vault modification test after modification procedure
        is in appendix 4.

    b.  The ATCBI-6M user setup test after modification procedure is in
        appendix 6.

    c.  The ATCBI-6M mode-4 vault cable modification test after
        modification procedure is in appendix 8.

    d.  The ATCBI-5 decommissioning test after modification procedure is
        in appendix 10.

16. **RESULT OF MODIFICATION.** This modification allows the ATCBI-6M to
    do the mode-4 interrogations while allowing the ARSR-4 to continue
    to monitor the vault status. The ATCBI-6M will also get the first
    and second function search that it requires. A local mode-4
    interrogation will be possible from the ATCBI-6M.

17. **CHANGES TO INSTRUCTION BOOKS.** All instruction book (IB) holders
    must make these changes to the IB.

  ------------------ ------------------ ------------------ -----------------
  PAGE CONTROL CHART                                       

                                                           

  Remove Pages       Dated              Insert Pages       Dated

  [SSD                                                     
  TOC]{.underline}                                         

  All Pages          All Dates          All Pages          Latest Date

                                                           

  [TI 6340.38,                                             
  VOLUME                                                   
  2]{.underline}                                           

  8-1 thru 8-4       8 May 1995         8-3                8 May 1995

                                        8-4                XX/XX/XXXX

  11-2               8 May 1995         11-2               XX/XX/XXXX

  11-3               8 May 1995         11-3               XX/XX/XXXX

  11-6               8 May 1995         11-6               XX/XX/XXXX

                                                           

  [TI 6340.23,                                             
  VOLUME 1, APPENDIX                                       
  B]{.underline}                                           

  B-1                6/04/2004          B-1                

  B-2                4/3/2003           B-2                4/3/2003

  B-17 thru B-20     1 April 1995       B-17               1 April 1995

                                        B-18               XX/XX/XXXX

                                        B-18A and B-18B    XX/XX/XXXX

                                        B-19               XX/XX/XXXX

                                        B-20               1 April 1995
  ------------------ ------------------ ------------------ -----------------

18. **CHANGES TO INSTALLATION DRAWINGS.** None.

19. **CHANGES TO RECORDED DATA.** Use the latest version of Order
    6032.1, National Airspace System Modification Program, and Order
    6030.45, Facility Reference Data File.

    a.  Make a modification record and put this record into the Facility
        Reference Data File (FRDF).

    b.  You can discard the SSD document after you save the record.

20. **Address changes.** Send facility address changes to your Service
    Area DDS point of contact. You can get a list of DDS contacts at
    [http://nas.amc.faa.gov/technical_library/DDSList.html](http://aos-ext.amc.faa.gov/technical_library/DDSList.html).

21. **CLARIFICATION OR COMMENTS.** None.

22. **RISKS.** There is no risk to the site during the installation of
    this modification.

    a.  
    b.  
    c.  

23. **FALLBACK PROCEDURES.** If changes are not made or cunattainable by
    the installer, contact National Airway Systems Engineering, Air
    Route Radar Systems, AJW-142, for field support assistance..

24. **STATUS ACCOUNTING.** Refer to appendix 2.

25. **RECOMMENDATIONS FOR CHANGES.** Send recommendations for changes to
    this document to Air Route Radar Systems, AJW-142, at (405)
    954-7445.

^for^ Richard A. Thoma

Director, Safety and Operations Support

+-----------------+-----------------------------------------+---------+
| LIST OF         |                                         |         |
| APPENDIXES AND  |                                         |         |
| ATTACHMENTS     |                                         |         |
+-----------------+-----------------------------------------+---------+
| > ITEM          | DESCRIPTION                             | Q       |
|                 |                                         | UANTITY |
+-----------------+-----------------------------------------+---------+
| > APPENDIX 1    | Test and Evaluation Gold Standard       | 1       |
|                 | considerations                          |         |
+-----------------+-----------------------------------------+---------+
| > APPENDIX 2    | STATUS ACCOUNTING                       | 1       |
+-----------------+-----------------------------------------+---------+
| > APPENDIX 3    | MODE-4 VAULT WIRING HARNESS             | 1       |
|                 | MODIFICATION PROCEDURE                  |         |
+-----------------+-----------------------------------------+---------+
| > APPENDIX 4    | TEST AFTER MODIFICATION PROCEDURE FOR   | 1       |
|                 | THE MODE-4 VAULT WIRING HARNESS         |         |
|                 | MODIFICATION                            |         |
+-----------------+-----------------------------------------+---------+
| > APPENDIX 5    | ATCBI-6M USER SETUP PROCEDURE           | 1       |
+-----------------+-----------------------------------------+---------+
| > APPENDIX 6    | TEST AFTER MODIFICATION PROCEDURE FOR   | 1       |
|                 | THE ATCBI-6M USER SETUP                 |         |
+-----------------+-----------------------------------------+---------+
| > APPENDIX 7    | ATCBI-6M MODE-4 VAULT CABLE             | 1       |
|                 | MODIFICATION PROCEDURE                  |         |
+-----------------+-----------------------------------------+---------+
| > APPENDIX 8    | TEST AFTER MODIFICATION PROCEDURE FOR   | 1       |
|                 | THE ATCBI-6M MODE-4 VAULT CABLE         |         |
|                 | MODIFICATION                            |         |
+-----------------+-----------------------------------------+---------+
| > APPENDIX 9    | ATCBI-5 DECOMMISSIONING PROCEDURE       | 1       |
+-----------------+-----------------------------------------+---------+
| > APPENDIX 10   | TEST AFTER MODIFICATION PROCEDURE FOR   | 1       |
|                 | THE ATCBI-5 DECOMMISSIONING             |         |
+-----------------+-----------------------------------------+---------+
| > ATTACHMENT 1  | SSD TABLE OF CONTENTS                   | 1       |
+-----------------+-----------------------------------------+---------+
| > ATTACHMENT 2  | INSTRUCTION BOOK CHANGES                | 1       |
+-----------------+-----------------------------------------+---------+

# **APPENDIX 1. TEST AND EVALUATION GOLD STANDARD CONSIDERATIONS** {#appendix-1.-test-and-evaluation-gold-standard-considerations .unnumbered}

1.  **Purpose -** This appendix communicates the type of Gold Standard
    testing that was accomplished on this directive, SSM-ARSR4-016. The
    scope of the testing conducted on this modification and test results
    are provided. Any additional unique testing or evaluation beyond the
    normal modification tests, that needs to be conducted during the
    field installation, is included in the Test Limitations paragraph.

2.  **Scope -** This modification has completed development and systems
    testing. The system test was conducted at the facility with the
    system modification baseline at software and hardware modifications
    through SSM-ARSR4-016. Key site testing of this modification was
    conducted at two other facilities with the same baseline as the
    system test.

3.  **Results -** The system test was conducted at the [Makah, WA
    (QKW)]{.mark} over a period of 2 days with customer representatives
    validating the installation procedures. Basic operation was
    validated by AJW-142 (AOS-233), site system specialists, and the
    USAF RADES. The system test was successful and completed on
    [2/21/2006]{.mark}.

Key site testing of this modification was conducted at the Tyndall, FL
(PAM) and Oceana, VA (QVR) facilities. These two sites were selected to
evaluate the modification because of the presence of mode-4 and the
ATCBI-6M. Mode-4 operation was verified on both the ARSR-4 and ATCBI-6M.
An additional key site test was performed at the non mode-4 site of QJA.

4.  **Test Limitations -** This modification was tested and validated in
    all known configurations and no additional unique testing is
    required.

# **APPENDIX 2. STATUS** **ACCOUNTING** {#appendix-2.-status-accounting .Hdng1txt}

#  {#section .Hdng1txt}

1.  A Log Equipment Modification (LEM) record is open in the Maintenance
    Management System (MMS) for each FSEP facility that has the system
    specified in Paragraph 6 of the SSM.

    a.  Change the Maintenance Action Code (MAC) to \"G\".

        1.  
        2.  

    b.  Make sure "N" is in the "REP COD" field.

    c.  Enter this data:

        **MMS FIELD NAME DATA ENTRY**

        FAC/SERV: ARSR

        LOC IDENT: XXXX

        (Enter each location identification code for your FSEP
        facility/service, 52AC)

        SHORT NAME: SYS

        (Change this field to the acronym of the Line Replacement Unit
        (LRU) modified)

        ORDER#/SYSTEM: SSM-ARSR4

        CHAP/SEQ#: 016

        CHG: B_D

# CCD: N30611 {#ccd-n30611 .Hdng1txt}

FA/CA NUMBER: FA-10307, 10308, 10312, 10331

d.  Close the LEM record.

    **NOTE:** For questions about these LEM entries, you can call (405)
    954-4421.

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26. 

27. If you use the National Airspace System Infrastructure Management
    System (NIMS) Event Management System (EMS), refer to
    [http://mdtcm.mps.faa.gov/docs/NIMS Status
    Accounting/NIMS_Status_Accounting.pdf](http://mdtcm.mps.faa.gov/docs/NIMS Status Accounting/NIMS_Status_Accounting.pdf).

# **APPENDIX 3. MODE-4 VAULT WIRING HARNESS MODIFICATION PROCEDURE** {#appendix-3.-mode-4-vault-wiring-harness-modification-procedure .Hdng1txt}

#  {#section-1 .Hdng1txt}

# **NOTE:** Schedule 4 hours of downtime before proceeding. {#note-schedule-4-hours-of-downtime-before-proceeding. .Hdng1txt}

#  {#section-2 .Hdng1txt}

1.  The following procedure will zeroize the KIR by turning off the
    mode-4 vault circuit breaker. This will also clear the CI-13 RCU key
    if the internal battery is faulty. Do not continue unless a
    KIR/CI-13 code reload can be coordinated.

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1.  Find TI 6340.38. Find figure 11-4. This will be used later in the
    procedure.

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28. Go to the ARSR-4 Local Display Console (LDC). Log in and take
    control.

29. At menu 1.1, put the system in REPR. Turn the transmitter off.

30. Go to mode-4 vault no. 1 (Unit 1). Open the vault front door.

31. Turn off CB1 to remove power from the KIR.

32. Plug the drop light, item 9e, into the convenience outlet.

33. Go to the back of the mode-4 vault no. 1. Open the back side door.

34. If there is no KIR at this site, go to step 12.

35. Unscrew the retaining thumb screws on the front of the KIR. Move the
    KIR out of the mode-4 vault and set it aside.

36. Remove the cable relief arm and square connector from the KIR
    chassis. Two people are needed for this procedure. It is necessary
    for the first person to back up the nuts on the square connector
    using the 11/32 inch open end wrench, item 9b. This is best done
    from the back of the vault.

37. From the front of the vault, unscrew the screws holding the square
    connector using the no. 2 Philips screwdriver, item 9c.

38. Find the mode-4 harness modification cable assembly, item 7a.

39. Go to the front of the mode-4 vault no. 1.

40. Put the sockets labeled 1W1P2-28 and 1W1P2-30 into the square
    connector (1W1P2) using the installation end (red) of the
    installation/removal tool M81969/14-02, item 7b. Refer to figure 1,
    below, for the pin out of this connector.

    ![](media/image1.jpeg){width="4.959722222222222in"
    height="4.040277777777778in"}

    Figure 1. KIR Square Connector (1W1P2) Socket Layout, Back View

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1.  In the following steps, the 1A2 subassembly is the 19-inch rack
    mount chassis with the switches on it. On the back of this chassis
    are three d-sub jacks.

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41. Go to the back of the vault. Find the DB-37 plug labeled 1W1P3. This
    is plugged into the back of the mode-4 control panel jack 2, 1A2J2.
    Refer to TI 6340.38, figure 11-4, for the location of this jack.

42. Remove plug 1W1P3 using a no. 1 standard screwdriver, item 9d. Be
    careful not to back the screw locks out all the way. Loosen them
    just enough to remove the connector.

43. Using a no.1 standard screwdriver, remove screws on the cable clamp.
    Some pressure must be applied to the nut to keep it from spinning
    even though it is captured by the cable clamp. This is a nylock nut
    so there will be some resistance while unscrewing the screw.

44. Remove the cable clamp from the backshell.

45. Using a no. 1 standard screwdriver, back screws out of screw locks
    until they can be slid off the connector. Remove the screw locks and
    slide the backshell away from the connector.

46. Find the 12 medium zip ties, item 7d.

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2.  Only 12 of the provided zip ties are needed for the following steps.
    Twelve of the provided 24 are required for the installation of the
    cable W52A.

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47. Starting from the 1W1P2 end (the square connector), use the zip ties
    to attach the new wiring harness to the existing wiring harness.
    There will be approximately 2 feet of extra mode-4 cable harness
    modification left.

48. Tie the extra mode-4 cable harness modification into an
    approximately 8-inch loop.

49. Use the diagonal cutters, item 9f, to trim the zip ties.

50. Find the end of the mode-4 cable harness modification labeled
    1W1P3-12 and 1W1P3-24. Thread these pins through the 1W1P3
    backshell.

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3.  Extra sockets (M39029/5-115, item 7l) and pins (M39029/64-369, item
    7j) are included in the kit to make repairs if needed.

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```
51. Put the pins P3-12 and P3-24 into connector 1W1P3, the installation
    end (red), using installation/removal tool M81969/1-02m, item 7c.
    Refer to figure 2 for the location of these pins.

    ![](media/image2.jpeg){width="5.667361111111111in"
    height="1.8222222222222222in"}

    Figure 2. 1W1P3 Pinout, Front View

52. Move the backshell to the 1W1P3 connector.

53. Move the screw locks onto the connector and the backshell of 1W1P3
    connector. Tighten the screw locks using the no. 1 standard
    screwdriver until they lock on to the backshell and the connector.

54. Reinstall the cable clamp.

55. Tighten the screws of the cable clamp to hold all the cables firmly.
    Do not tighten them too much. From the front of the connector, make
    sure that all the pins are straight.

56. Install connector 1W1P3 to 1A2J2.

57. Tighten the screw locks using a no. 1 standard screwdriver. Do not
    tighten the screw locks too much.

58. Close and lock the vault back door.

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4.  The front door of the mode-4 vault no. 1 must stay open, the KIR
    must be not installed, and the circuit breaker CB1 must stay off for
    the test after modification procedure.

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```
59. If this is not a mode-4 site, skip to step 35, below.

    **NOTE:** The following step requires two people, one to install the
    screws from the front and the other to back up the 3/32-inch nuts on
    the back.

60. At the front of the mode-4 vault, reinstall the square connector
    1W1P2 using the four screws removed when the connector was taken
    off. Use the 3/32-inch open end wrench and the no. 2 Philips
    screwdriver.

61. Place the remaining parts for the modification in mode-4 vault
    no. 2. These will be needed when Air Route Radar Systems, AJW-142,
    arrives on site.

62. The MODE-4 Vault Wiring Harness Modification procedure is complete.

#  {#section-3 .Hdng1txt}

# **APPENDIX 4. TEST AFTER MODIFICATION PROCEDURE FOR THE MODE-4 VAULT WIRING HARNESS MODIFICATION** {#appendix-4.-test-after-modification-procedure-for-the-mode-4-vault-wiring-harness-modification .Hdng1txt}

#  {#section-4 .Hdng1txt}

5.  After doing the procedure in appendix 3, the mode-4 vaults will be
    turned off and the KIR will not be installed.

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1.  Find the drop light, item 9e. Plug it into the front of the data
    processor.

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63. Find the two test wires with sockets on the ends, item 7e.

64. Find the volt-ohm meter (VOM), item 9a.

65. Find the no. 1 standard screwdriver, item 9d.

66. Find the 6 foot stepladder, item 9g. Position the ladder at the rear
    of the data processor.

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6.  Refer to TI 6340.35, Section 11, Vol. 2, Figure 11-1, for the
    location of connector 6J10.

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67. Using the drop light, find jack 6J10 on top of the data processor.
    Remove pin W52P1 from jack 6J10.

68. Insert test wires with sockets into pins W52P1-47 and W52P1-31.

69. Use the VOM to make sure that there is no continuity between the
    test wires on pin W52P1.

70. Find the test wire with pins on both ends, item 7f.

71. Go to the mode-4 vault no. 1. Install the test wire in the square
    connector between sockets 1W1P2-28 and 1W1P2-30.

72. Go to the data processor cabinet.

73. Use the VOM to make sure that there is now continuity between the
    two test wires.

74. Remove the test wires from W52P1. Install pin W52P1 on jack 6J10. Do
    not over tighten the screw locks.

75. Unplug and remove the droplight. Remove the ladder from the rear of
    the data processor cabinet.

76. Go to mode-4 vault no. 1. Remove the test wire from the square
    connector, 1W1P2.

77. If this is a mode-4 site, install the KIR. In mode-4 vault no. 1,
    turn the circuit breaker CB1 ON.

78. Close and secure the mode-4 vault no. 1 front door.

79. Go to the LDC and cold start the ARSR-4.

80. Go to the data reduction personal computer (DRPC). Maximize the
    PAS_COLL screen.

81. At the PAS_COLL screen, scroll to the top (most recent) entry.
    Record the time of the latest entry.

82. Monitor the PAS_COLL for 30 minutes. Make sure that there are no
    mode-4 related alarms present.

83. Go to the LDC. If the transmitter is not on, turn it on.

84. The test after modification procedure for the mode-4 vault wiring
    harness modification is complete.

    **APPENDIX 5. ATCBI-6M USER SETUP PROCEDURE**

    **NOTES:** Schedule 4 hours of downtime before proceeding.

    The ATCBI-6M first function data is on ATCBI-6M jack SK 48 and the
    ATCBI-6M second function data is on jack SK 49. These go to ARSR-4
    ports AF1 and AF2 respectively. AF1 is jack J28 in the ARSR-4 Radar
    Control Junction Box (RCJB) and AF2 is jack J29 in the RCJB.

    The ATCBI-6M azimuth data is on ATCBI-6M jack PL53 and goes to
    ARSR-4 RCJB jack J26. There may be a terminator installed on this
    jack that must be removed prior to hooking up the ATCBI-6M azimuth
    cable. Removing this terminator will have no effect on the ARSR-4.

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1.  Find the spare data collection and disk (DCD) and electronically
    erasable programmable read-only memory (EEPROM) from the sites spare
    storage. These will be installed during the procedure.

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85. Find TI 6340.35. Make sure that Paragraph 6.5.3, Backup Spare
    EEPROM, is present. This was distributed as a part of SDR-ARSR4-009.

86. Go to the ARSR-4 data processor cabinet.

87. Open the cabinet door.

88. Set the boot strap loader switch to EEPROM and push the RESET
    button. This flushes out any changed parameters in the system.

89. Go to the LDC.

90. When the cold start is finished, log in and take control.

91. In TI 6340.35, print menus 5.6.1.1, 5.6.1.5, 5.6.2.1 (all pages),
    5.6.2.2 (all pages), 5.6.2.3 (all pages), and 5.6.2.5 (all pages).

92. Examine menu 5.6.2.1. Make sure that there are no users are
    currently using ports AF1 and AF2. These will be used for the
    ATCBI-6M first and second function users respectively.

93. If any users are currently using ports AF1 and AF2, contact Air
    Route Radar Systems, AJW‑142, for assistance on choosing other
    ports. Restore the system to service and yield back the balance of
    the downtime until user ports AF1 and AF2 are freed up.

94. On menu 5.6.2.1, make sure that all ports on users 19 and 20 are
    OFF. If user 19 or 20 currently have ports allocated to them,
    contact Air Route Radar Systems, AJW-142, field support for
    assistance on choosing other users and restore the system to
    service.

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7.  In order to change the MIL USER setting of any user, the AF Port
    Assignment switch (S3) in mode-4 vault no. 1 must be in the ENABLED
    position. If the MIL USER status of user 19 or 20 needs to be
    changed in the following steps, set the AF Port Assignment switch to
    ENABLED.

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95. Go to menu 5.6.2.1. Setup user 19 and 20 exactly as shown in figure
    1, which is at the end of this appendix.

96. Print menu 5.6.2.1 for the facility reference data file (FRDF).

97. Go to menu 5.6.2.5.

98. Configure AF1 and AF2 ports exactly as shown in figure 2, which is
    at the end of this appendix.

99. Print this menu for the FRDF.

100. Go to menu 5.6.2.3.

101. Configure users 19 and 20 exactly as shown in figure 3, which is at
     the end of this appendix.

102. Print this menu for the FRDF.

103. Press CTRL-T to get to menu 5.6.2. Choose option 8 to load changes.

104. Go to menu 5.6.1.5.

105. Configure users 19 and 20 exactly as shown in figure 4, which is at
     the end of this appendix.

106. Print this menu for the FRDF.

107. Push CTRL-T to get to menu 5.6.1. Choose option 6 to load changes.

108. Go to menu 3.19.2, page 7.

109. Turn on users 19 and 20 alarms 53B2, 53CA, 53E2, 53B3, 53CB, and
     53E3.

110. Print this menu for the FRDF.

111. Go to menu 3.15.14.1, page 3.

112. Disable SIO 1 PORT 3 DSR CTS DOWN alarm (AF1). This is alarm 5179.

113. Print this menu for the FRDF.

114. Go to menu 3.15.14.3, page 3.

115. Disable SIO 3 PORT 3 DSR CTS DOWN alarm (AF2). This is alarm 51B5.

116. Print this menu for the FRDF.

117. Go to menu 1.2.7. Put EEPROM B into STBY and then LOCK.

118. Go to menu 1.3. Make sure that all sectors are in VIP.

119. Push CTRL-T. Choose option 11 to save SAP/FAPS to EEPROM. Choose
     option 1 to execute this command.

120. Make sure that the maintenance display terminal (MDT) shows the
     message "Offline PROM board burned successfully". Press CTRL-G to
     clear this message. Then make sure that the MDT shows the message
     "Online PROM board burned successfully". Press CTRL-G to clear this
     message.

121. Press CTRL-T.

122. After 2 scans choose option 12 to save safe data to the EEPROM.

123. Choose option 1 to execute this command.

124. Make sure that the MDT shows the message "Offline PROM board burned
     successfully". Press CTRL-G to clear this message. Then make sure
     that the MDT shows the message "Online PROM board burned
     successfully". Press CTRL-G to clear this message.

125. Go to menu 1.1.

126. Choose option 202 to execute a cold start.

127. Choose option 1 to execute this command.

128. When the cold start is complete, log in and take control. If the
     transmitter is not already on, turn it ON.

129. Go to menu 5.6.2.1, page 2. Make sure that users 19 and 20 are
     still set up as shown in figure 3, which is at the end of this
     appendix.

130. Go to menu 2.4.8.5, page 1. Wait for 6 scans to complete.

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8.  

9.  Make sure that user 19 is receiving first function data (1st FN RDR
    ONLY).

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131. Make sure that user 20 is receiving second function data (2nd FN
     RDR ONLY).

132. Go to menu 2.4.8.5, page 2.

133. Make sure that a search real-time quality control (RTQC) is being
     sent to users 19 and 20.

134. Make sure that status messages are being sent to users 19 and 20.

135. Go to menu 3.15.14. Make sure that there are no alarms on SIO 1 or
     SIO 3.

136. Complete the procedure in TI 6340.35, Paragraph 6.5.4, Make Data
     Collection Disk (DCD) Bootable, to save the new configuration to
     the DCD.

137. Go to the data processor cabinet. Set the boot loader switch to
     DISK and push the reset button.

138. Go to the LDC. Log in and take control.

139. Go to menu 5.6.2.1, page 2. Make sure that users 19 and 20 are
     still set up as shown in figure 1, which is at the end of this
     appendix.

140. Go to the data processor cabinet. Set the boot loader switch to
     EEPROM and push the reset button.

141. Complete the procedure in TI 6340.35, Paragraph 6.5.5, Backup
     Software and Maps to Data Reduction Personal Computer (DRPC), to
     backup the current DCD.

142. Complete the procedure in TI 6340.35, Paragraph 6.5.6, Backup
     Software to Spare Data Collection Disk (DCD), to backup software to
     the spare DCD. This saves the changes just made onto the spare DCD.

143. Complete the procedure in TI 6340.35, paragraph 6.5.3, to backup
     the spare EEPROM.

144. Go to the LDC, .release control, and log off.

145. Go to the ARSR-4 data processor cabinet and close the door.

146. Pack and return spare EEPROM and DCD to the site spares storage.

147. The ATCBI-6M User Setup Procedure is complete.

5.6.2.1 I/O TYPE AND USER ASSIGNMENTS PAGE 1 OF 2

USER I/O TYPE MIL CHANNEL CHANNEL CHANNEL CHANNEL

USER 1 2 3 4

\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_

1 SOCC Y OFF OFF OFF OFF

2 SOCC Y OFF OFF OFF OFF

3 SOCC Y OFF OFF OFF OFF

4 SOCC Y OFF OFF OFF OFF

5 ARTC N OFF OFF OFF OFF

6 SOCC Y OFF OFF OFF OFF

7 ARTC Y OFF OFF OFF OFF

8 SOCC Y OFF OFF OFF OFF

9 ARTC N OFF OFF OFF OFF

10 NONE N OFF OFF OFF OFF

HELP VIEW GO TO ENTER NEXT RNG RUNLG

ALARMS MAIN DATA OFS ENAB

5.6.2.1 I/O TYPE AND USER ASSIGNMENTS PAGE 2 OF 2

USER I/O TYPE MIL CHANNEL CHANNEL CHANNEL CHANNEL

USER 1 2 3 4

\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_

11 NONE N OFF OFF OFF OFF

12 NONE N OFF OFF OFF OFF

13 NONE N OFF OFF OFF OFF

14 NONE N OFF OFF OFF OFF

15 NONE N OFF OFF OFF OFF

16 NONE N OFF OFF OFF OFF

17 NONE N OFF OFF OFF OFF

18 NONE N OFF OFF OFF OFF

**19 SOCC N AF1 OFF OFF OFF**

**20 SOCC N AF2 OFF OFF OFF**

Figure 1. Menu 5.6.2.1 ATCBI-6M User Setup

5.6.2.5 PORT DEFINITIONS PAGE 1 OF 2

ALARM

PORT \# RS SEL INVERT CLOCK BAUD WORD PROTOCOL MODE 4

DATA SELECT RATE LEN RCV ENABLE

\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\--

**AF 1 RS530 N INT 38400 13 CD2 N**

**AF 2 RS530 N INT 38400 13 CD2 N**

AF 3 RS530 N EXT 9600 13 CD2 N

AF 4 RS530 N EXT 9600 13 CD2 N

AF 5 RS530 N EXT 2400 13 CD2 N

AF 6 RS530 N EXT 9600 13 CD2 N

PORT 1 RS530 N EXT 2400 13 CD2 N

PORT 2 RS530 N EXT 2400 13 CD2 N

PORT 3 RS530 N EXT 2400 13 CD2 N

PORT 4 RS530 N INT 9600 13 CD2 N

PORT 5 RS232 Y INT 2400 13 CD2 N

HELP VIEW GO TO ENTER NEXT RNG RUNLG

ALARMS MAIN DATA OFS ENAB

5.6.2.5 PORT DEFINITIONS PAGE 2 OF 2

ALARM

PORT \# RS SEL INVERT CLOCK BAUD WORD PROTOCOL MODE 4

DATA SELECT RATE LEN RCV ENABLE

\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\--

PORT 6 RS232 Y INT 9600 13 CD2 N

PORT 7 RS232 N INT 2400 13 CD2 N

PORT 8 RS232 Y INT 2400 13 CD2 N

PORT 9 RS232 Y INT 2400 13 CD2 N

PORT 10 RS232 Y EXT 9600 13 ADCP N

PORT 11 RS232 Y EXT 9600 13 CD2 N

PORT 12 RS232 Y EXT 2400 13 CD2 N

PORT 13 RS232 Y EXT 2400 13 CD2 N

PORT 14 RS232 Y EXT 2400 13 CD2 N

VIEW GO TO ENTER RNG RUNLG

ALARMS MAIN DATA PREV OFS ENAB

Figure 2. Menu 5.6.2.5 ATCBI-6M User Setup

5.6.2.3 USER FORMAT DEFINITIONS - USERS 11-20 PAGE 1 OF 2

REPORT TYPE USER

11 12 13 14 15 16 17 18 **19 20**

BEACON TARGET 0 0 0 0 0 0 0 0 **0 0**

SEARCH TARGET 0 0 0 0 0 0 0 0 **14 0**

BEACON/SEARCH REINFORCED 0 0 0 0 0 0 0 0 **0 0**

MODE4 TARGET 0 0 0 0 0 0 0 0 **0 0**

BEACON/MODE4 REINFORCED 0 0 0 0 0 0 0 0 **0 0**

SEARCH/MODE4 REINFORCED 0 0 0 0 0 0 0 0 **0 0**

BCN/SRCH/MODE4 REINFORCED 0 0 0 0 0 0 0 0 **0 0**

JAM STROBE 0 0 0 0 0 0 0 0 **16 0**

BEACON STROBE 0 0 0 0 0 0 0 0 **0 0**

2nd FNCTN CORREL. RADAR 0 0 0 0 0 0 0 0 **0 14**

2nd FNCTN CORREL. JAM 0 0 0 0 0 0 0 0 **16 0**

NON-EVALUATED MODE4 0 0 0 0 0 0 0 0 **0 0**

BCN/NON-EVALUATED MODE4 0 0 0 0 0 0 0 0 **0 0**

HELP VIEW GO TO ENTER NEXT RNG RUNLG

ALARMS MAIN DATA OFS ENAB

5.6.2.3 USER FORMAT DEFINITIONS - USERS 11-20 PAGE 2 OF 2

REPORT TYPE USER

11 12 13 14 15 16 17 18 **19 20**

SRCH/NON-EVALUATED MODE4 0 0 0 0 0 0 0 0 **0 0**

BCN/SRCH/NON-EVAL. MODE4 0 0 0 0 0 0 0 0 **0 0**

WEATHER VECTOR 0 0 0 0 0 0 0 0 **0 12**

BEACON RTQC 0 0 0 0 0 0 0 0 **0 0**

SEARCH RTQC 0 0 0 0 0 0 0 0 **15 15**

STATUS RPT 0 0 0 0 0 0 0 0 **21 13**

MODE4 LOOP TEST 0 0 0 0 0 0 0 0 **0 0**

MILITARY MAP 0 0 0 0 0 0 0 0 **0 0**

SECTOR MARK REPORT 0 0 0 0 0 0 0 0 **0 0**

WEATHER UPDATE RATE RPT 0 0 0 0 0 0 0 0 **0 0**

VIEW GO TO ENTER RNG RUNLG

ALARMS MAIN DATA PREV OFS ENAB

Figure 3. Menu 5.6.2.3 ATCBI-6M User Setup

5.6.1.5 RADAR ONLY SELECT SCREEN

USER RADAR ONLY USER RADAR ONLY USER RADAR ONLY USER RADAR ONLY

SELECT SELECT SELECT SELECT

1 6 6 6 11 1 16 1

2 4 7 4 12 1 17 1

3 4 8 4 13 1 18 1

4 4 9 1 14 1 **19 1**

5 4 10 1 15 1 **20 2**

LDC-1 6 LDC-2 1 LDC-3 1 LDC-4 1

MAP ENABLE A: 1 (1=ENABLE, 0=DISABLE) MAP ENABLE B: 1 (1=ENABLE,
0=DISABLE)

NOTE: 1 = ALL FIRST FUNCTION RO

2 = ALL SECOND FUNCTION RO

3 = EDITOR MAP A, FF RO IN FOREGROUND

4 = EDITOR MAP A, SF RO IN FOREGROUND

5 = EDITOR MAP B, FF RO IN FOREGROUND

6 = EDITOR MAP B, SF RO IN FOREGROUND

HELP VIEW GO TO ENTER RNG RUNLG

ALARMS MAIN DATA OFS ENAB

Figure 4. Menu 5.6.1.5 ATCBI-6M User Setup

**APPENDIX 6. TEST AFTER MODIFICATION PROCEDURE FOR THE ATCBI-6M USER
SETUP**

1.  Go to the DRPC. Maximize the PAS_COLL screen.

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148. At the PAS_COLL screen, scroll to the top (most recent) entry.
     Record the time of the latest entry.

149. Monitor PAS_COLL for 30 minutes. Make sure that none of the alarms
     in table 1 are present.

  ---------------------------------------------------- ------------------
  TABLE 1. ALARMS TO MONITOR TO VERIFY ATCBI-6M USER   
  SETUP                                                

  Alarm                                                BIT Test Number

  USER19 OVERLOAD ALARM                                53B2

  USER19 OVERFLOW ALARM                                53CA

  USER19 TIME IN STORAGE ALARM                         53E2

  USER20 OVERLOAD ALARM                                53B3

  USER20 OVERFLOW ALARM                                53CB

  USER20 TIME IN STORAGE ALARM                         53E3

  SIO 1 PORT 3 REGISTER VERIFY ALARM                   5177

  SIO 1 PORT 3 STATUS/WRAP ALARM                       5178

  SIO 1 PORT 3 MIL LOOPBACK TEST ALARM                 514F

  SIO 1 PORT 3 BUSY ALARM                              517A

  SIO 1 PORT 3 PROTOCOL ALARM                          517B

  SIO 1 PORT 3 MODEM LOOP ERROR                        517C

  SIO 3 PORT 3 REGISTER VERIFY ALARM                   51B3

  SIO 3 PORT 3 STATUS/WRAP ALARM                       51B4

  SIO 3 PORT 3 MIL LOOPBACK TEST ALARM                 5157

  SIO 3 PORT 3 BUSY ALARM                              51B6

  SIO 3 PORT 3 PROTOCOL ALARM                          51B7

  SIO 3 PORT 3 MODEM LOOP ERROR                        51B8
  ---------------------------------------------------- ------------------

**APPENDIX 7. ATCBI-6M MODE-4 VAULT CABLE MODIFICATION PROCEDURE**

2.  The following procedure will zeroize the KIR by turning off the
    mode-4 vault circuit breaker. This will also clear the CI-13 RCU key
    if the internal battery is faulty. Do not proceed unless a KIR/CI-13
    code reload can be coordinated.

# **NOTE:** Four hours of downtime is necessary for this procedure. {#note-four-hours-of-downtime-is-necessary-for-this-procedure. .Hdng1txt}

**NOTE:** For an overall diagram of the modification, refer to figure 1
of this appendix.

#  {#section-5 .Hdng1txt}

# Find TI 6340.38 and TI 6340.35. These will be necessary for the procedure below. {#find-ti-6340.38-and-ti-6340.35.-these-will-be-necessary-for-the-procedure-below. .Hdng1txt}

150. Go to the ARSR-4 Local Display Console (LDC). Log in and take
     control. Put the system in repair (REPR). Turn the transmitter OFF.

151. Go to the mode-4 vault no. 1 (Unit 1). Open the vault front door.

152. Turn off the CB1 to remove the power from the KIR.

153. Plug the drop light, item 9e, into the convenience outlet.

154. Go to the back of the mode-4 vault no. 1. Open the back side door.

     **NOTE:** Unit 1A2 in mode-4 vault no.1 is the assembly with the
     vault switches on the front and 3 D-Sub jacks on the back. Refer to
     TI 6340.38, figure 11-4 for a drawing of this part.

155. At the back of the mode-4 vault, use a no. 1 standard screwdriver
     to remove cables W52P2, 1W1P3, and 1W2P3 from 1A2J1, 1A2J2, and
     1A2J3 respectively. Refer to TI 6340.38, figure 11-4 for the
     location of these jacks.

156. At the front of the vault, remove 4 standard screws from the 1A2
     unit using a no. 2 standard screwdriver. Hold the 1A2 unit to keep
     it from falling.

157. Move the 1A2 unit to a suitable work bench.

158. Using a 3/16-inch nut driver, item 9m, remove the female screw
     locks from connector 1A2J1. These screw locks hold the D-50M
     connector in place so it should come free once they are removed.
     They should not be so tight that they need a ratchet, but it may be
     necessary to hold the back side nut with a finger to get the screw
     lock off.

159. Pull the D-50M connector 1A2J1 out of the way.

160. Find the Greenlee hole punch set, D-50, item 9p.

161. Hold inner D shaped punch below existing hole in 1A2 from where
     1A2J1 was removed. Hold the punch with the wide part face up. Leave
     approximately 1/4 inch of space between punch and 1A2J1 hole.

162. Use a pencil, item 9h, to mark the location of the center of the
     punch. Move punch out of the way.

163. Use the automatic punch, item 9i, to punch the location marked in
     paragraph 14.

164. Find the 3/8-inch drill, item 9j. Put 1/8-inch drill bit, item 9l,
     in the drill and tighten chuck.

![](media/image3.wmf)

Figure 1. Overall Modification Cable Diagram

1.  When drilling holes in the following steps make sure that the wiring
    harness in back of the panel being drilled is held out of the way.
    Do not drill further into panel than necessary.

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165. Plug in the drill. Have one person hold the wiring harness out of
     the way and drill a 1/8-inch pilot hole in the location punched in
     step 14, above.

166. Change to the 7/16-inch drill bit, item 9k.

167. Have one person hold the wiring harness out of the way and drill
     the pilot hole to 7/16-inch.

168. Find the 1-inch ratcheting wrench, item 9q, and AeroShell 17
     molybdenum disulfide grease, item 9r.

169. Find the Greenlee instructions with title "Safety Instructions and
     Parts List, Greenlee 229, 231, RS232, 234, and 238 Connector
     Punches". These were supplied with the punch set. Turn to the
     section titled "Operating With Wrench".

170. Grease the draw stud and all cutting edges with AeroShell 17 as
     shown in Greenlee instructions.

171. Assemble the draw stud, the ball bearing drive nut, and the die as
     shown in Greenlee instructions.

172. Put the draw stud through the 7/16-inch hole from the back of the
     1A2 panel. Put the punch and square nut as shown in the Greenlee
     instructions.

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3.  Be careful while tightening the Greenlee punch. This punch needs
    only light to moderate effort to punch through the thin aluminum of
    the 1A2 panel. If the punch is difficult to turn, it is either cross
    threaded or it is not assembled correctly.

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173. From the back of the 1A2 panel, hold the Greenlee outer die in one
     hand while tightening the draw stud with the 1-inch ratcheting
     wrench in the other hand. Make sure to keep both the inner and
     outer dies horizontal and positioned correctly relative to the
     1A2J1 hole while tightening the draw stud.

174. Once the punch is completely through the 1A2 panel, disassemble the
     punch and remove the aluminum slug. Inspect the punched hole for
     any parts that did not punch completely.

175. Find the 3 sets of female screw locks, item 7s.

176. Find the cable assembly W52B, item 7g.

177. Place W52BP3 in the D-50 hole just punched with the Greenlee punch.
     Install one female screw lock and lock washer by hand with
     3/16-inch nut driver in each end of the connector. Do not over
     tighten.

178. Place W52BP2 in the existing 1A2J1 D-50 hole from the back. Install
     one female screw lock and lock washer in each end of the connector.
     Tighten by hand with 3/16-inch nut driver. Do not over tighten.

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10. The female screw locks contain two flat washers and a nut that are
    not needed in this installation.

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179. Install one female screw lock and lock washer in each end of the
     W52BP1 using the 3/16-inch nut driver.

180. Find the 2 male screw locks, item 7q. Place these over the D-50M
     connector that was removed from 1A2J1. Use the no. 1 standard
     screwdriver to install.

181. Install 1A2 unit, which was removed earlier, into the front of the
     mode-4 vault using the no.2 standard screwdriver.

182. At the back of the mode-4 vault no. 1 use a no. 1 standard
     screwdriver to install cable W52P2 to 1A2J1. Install 1W1P3 to
     1A2J2. Install 1W2P3 to 1A2J3. Do not over tighten screw locks.

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11. Connector W52BP1 will have female screw locks already installed.

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183. Find the Brady label (J4), item 7i. Peel the label off of the wax
     paper backing and apply it to the left of W53BP3.

184. Find the cable W52A, item 7h.

185. Find the 6' stepladder, item 9g.

186. Using the stepladder, place the cable in cable tray above the
     mode-4 vault no. 1.

187. At the top of mode-4 vault no. 1, pull the unterminated end of W52A
     (i.e. the one that does not have a connector on it) through a hole
     in the top of the vault.

188. From the back of mode-4 vault no. 1, pull the end of cable W52A
     through the back door of the vault.

189. Carefully remove the masking tape that is protecting the sockets.

190. Find the heat shrink label, item 7m marked W52AP2/1A2J4. Place over
     unterminated end of W52A.

191. Find the split ring ferrule, item 7p.

192. Place the split ring ferrule around cable W52A where the jacket
     ends. Refer to figure 2, below, for positioning of the split ring
     ferrule.

     ![](media/image4.jpeg){width="4.95in" height="5.35in"}

     Figure 2. Connector Assembly Diagram

193. Wrap the drain wire around the split ring ferrule one time. The
     wrap should be on the side of the split ring ferrule opposite the
     split.

194. Fold the braded shield backwards around the split ring ferrule.

195. Find the DB-50F connector, item 7n.

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12. When populating the connector W52AP2, leave the wires labeled SPARE
    in the connector.

13. Wires WH/BL and BL/WH are difficult to tell apart. If unsure which
    is which, confirm the continuity of the BL/WH wire to pin 1 of
    W52AP1.

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196. Using the insertion/removal tool M81969/1-02, item 7c, populate the
     DB-50F connector with sockets on the unterminated end of W52A.
     Refer to table 1, below, for the color codes of cable W52A.

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14. Extra sockets (M39029/63-368, item 7k) and pins (M39029/64-369, item
    7j) are included in the kit to repair any wires that happen to break
    off.

  ----------------- ----------------- ----------------- -----------------
  Table 1. Pinout                                       
  For W52AP2                                            

  Signal            Color Code        W52AP1 Pin        W52AP2 Socket

  ZERORTN           BL/WH             1                 1

  KIRGND            WH/BL             34                34

  DOOR1             OR/WH             3                 3

  DOOR1RTN          WH/OR             36                36

  SRETURN           GN/WH             8                 8

  S1                WH/GN             24                24

  KIRZERO           GY/WH             23                23

  KIRLCKOUT         WH/GY             25                25

  KIRINTLKRTN       RD/OR             31                31

  KIRINTLK          OR/RD             47                47

  SPARE1            WH/BR             N/C               N/C

  SPARE2            BR/WH             N/C               N/C

  SPARE3            RD/BL             N/C               N/C

  SPARE4            BL/RD             N/C               N/C
  ----------------- ----------------- ----------------- -----------------

197. Refer to figure 3 for the numbering of sockets in this connector.

     ![](media/image5.jpeg){width="5.511111111111111in"
     height="1.4388888888888889in"}

     Figure 3. W52P1 And W52AP1 Pin Out From The Front

     Also W52P2 And W52AP2 Pin Out From The Back

198. Fine the metal backshell kit, item 7o.

199. Find the channel lock pliers, item 9o.

200. Assemble the backshell halves around the split ring ferrule.

201. Using the channel lock pliers, push the backshell halves firmly
     together. Some effort will be needed to compress the split ring
     ferrule. Make sure, however, that the split ring ferrule is
     positioned in the proper backshell groove and no wires are being
     pinched.

202. Install the backshell hardware included in the kit.

203. Cut the excess shield braid off using diagonal cutters, item 9f.

204. Slide the heat shrink label on W52AP2 to the connector.

205. Using a heat gun, item 9n, shrink the label until it is tight.

206. Using the ladder, find the W52AP1 end of cable W52A. This will be
     in the cable tray.

207. Pull W52AP1 down to the mode-4 vault so it can be checked. Remove
     the protective dust cover.

208. Find one test wire with sockets on both ends, item 7e. Also find
     one test wire with pins on both ends, item 7f.

209. At W52AP2, put the test wire with pins on both ends in the first
     socket shown in table 1, above.

210. Place the other test wire with sockets on both ends on the
     corresponding W52AP1 pin.

211. Use a VOM, item 9a, to measure the resistance between the two test
     wires that were connected in the previous steps. Make sure that
     there is continuity between W52AP1 and W52AP2.

212. Continue checking the wires shown in table 1 until all of the wires
     have been checked except the spares. If any problems are found, do
     the troubleshooting procedure on the connector W52AP2.

213. Replace the W52AP1 dust cover. Put the W52AP1 back in the cable
     tray.

214. Attach cable W52AP2 to 1A2J4 and tighten the screw locks.

215. Find the remaining 14.7-inch low profile zip ties, item 7d.

216. Pull cable W52A through the hole in the mode-4 vault until cable is
     slightly slack but excess cable is taken up.

217. Use the 14.7-inch zip ties to attach cable W52A to cable W52 in
     several places. Zip tie the cables both inside and outside the
     vault.

218. Use the diagonal cutters to trim the zip ties.

219. Close and lock the back door of vault no. 1.

220. Run cable W52A through the cable tray to the ATCBI-6M. Thread the
     cable through square D cableway to the back of the COMMS cabinet.

221. Thread W52AP1 to the KIR interface unit but do not connect. This
     will be connected after testing is complete.

222. Find the mode-4 switch assembly, item 7r.

223. Attach the mode-4 switch assembly to the KIR interface unit, J37.
     This will be used to perform local mode-4 interrogations.

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15. Leave the KIR uninstalled, the mode-4 vault CB-1 off, the vault door
    no. 1 open, system in REPR, and the transmitter OFF for the test
    after modification.

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224. The ATCBI-6M MODE-4 Vault Cable Modification Procedure is complete.

**APPENDIX 8. TEST AFTER MODIFICATION PROCEDURE FOR THE ATCBI-6M MODE-4
VAULT CABLE MODIFICATION**

1.  Find the 2 test wires with sockets on the ends, item 7e.

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225. Go to the ATCBI-6M. Find the W52AP1. Remove the dust cover and set
     it aside.

226. Put the test wires on W52AP1-47 and W52AP1-31.

227. Using a VOM, make sure that there is no continuity with the KIR
     that is not installed.

228. If this is a mode-4 site, go to the mode-4 vault no.1 and reinstall
     the KIR. Turn the mode-4 vault circuit breaker, CB-1, on.

229. If this is not a mode-4 site, perform the following steps:

     a.  Find the test wire with pins on both ends, item 7f.

     b.  Go to the mode-4 vault no. 1.

     c.  Insert the test wire into the square connector, sockets
         1W1P2-28 and 1W1P2-30. This simulates the KIR\$INTLK and
         KIR\$INTLKRTN signals.

230. Go to the ATCBI-6M KIR interface unit.

231. Recheck the continuity between the two test wires on W52AP1. There
     must be continuity with the KIR installed or the test wire
     installed.

232. Remove the test wires from W52AP1.

233. If this is not a mode-4 site, remove the test wire inserted in the
     mode-4 vault between 1W1P2-28 and 1W1P2-30.

234. Install W52AP1 on the KIR interface unit J27 and tighten the screw
     locks. Make sure the cable is installed in such a way that the door
     will close.

235. Make sure that the front door of mode-4 vault no. 1 is open. The
     door should still be open after the modification procedure in
     appendix 7.

236. Go to the LDC. Cold start the system.

237. After the cold start is finished, log in and take control. Turn the
     transmitter on if it is not already on.

238. Go to menu 3.19.3. Print both pages.

239. Make sure that alarm 53EB, MODE-4 SAFE A DOOR OPEN, is enabled.
     Make sure that alarm 53EC, MODE-4 SAFE B DOOR OPEN, is enabled.

240. Make sure that alarm 53EB, MODE-4 SAFE A DOOR OPEN is in alarm and
     alarm 53EC, MODE-4 SAFE B DOOR OPEN is not in alarm.

241. Close, but do not lock, the front door on mode-4 vault no. 1.

242. Open the front door on mode-4 vault no. 2.

243. At the LDC, make sure that alarm 53EC, MODE-4 SAFE B DOOR OPEN, is
     in alarm and alarm 53EB, MODE-4 SAFE A DOOR OPEN, has cleared.

244. Close and secure the front door of mode-4 vault no. 2.

245. At the LDC, make sure that the alarm 53EC has cleared.

246. On menu 3.19.3, make sure that the mode-4 vault temperatures
     (alarms 53E9 and 53EA) are registering room temperature.

247. If this is not a mode-4 site, skip to step 40.

248. Go to the mode-4 vault no. 1. Record the position of the LDC
     CONTROL switch (either LOCAL or SOCC).

249. Put the LDC CONTROL switch in the LOCAL position. This will be
     needed in order to do a local mode-4 interrogation

250. Make sure that the KIR is zeroized. The KIR should be zeroized
     after being turned on in step 5.

251. Go to menu 3.19.3. Make sure that alarm 53FC, KIR-1B CODE ZEROIZE,
     is enabled.

252. Make sure that alarm 53FC, KIR-1B CODE ZEROIZE, is in alarm.

253. Install the code of the day into the KIR.

254. At the LDC, make sure that alarm 53FC, KIR-1B CODE ZEROIZE, has
     cleared.

255. Go to menu 3.17, page 4. Print this page.

256. If not already enabled, enable alarms 52FB, MD4 A P1 PULSE ALARM
     and 52FC, MD4 A P4 PULSE ALARM.

257. Go to menu 3.18, page 4. Print this page.

258. If not already enabled, enable alarms 5346, MD4 B P1 PULSE ALARM
     and 5347, MD4 B P4 PULSE ALARM.

259. Press CTRL-A to get to menu 3.

260. At the LDC, push and hold the MODE-4 MANUAL switch down for one
     scan while simultaneously monitoring menu 3. This will perform a
     mode-4 interrogation.

261. Make sure that there are no beacon/mode-4 channel A or B alarms
     while interrogating mode-4.

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16. There may not be any mode-4 equipped aircraft in the area so the LDC
    may not show any mode-4 targets during a manual interrogation. If
    the interrogation was unsuccessful, the ARSR-4 will generate the P1
    and P4 pulse alarms.

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262. If alarm(s) 52FB, 52FC, 5346, or 5347 are present while the MODE-4
     MANUAL switch is pushed, then the ARSR-4 did not successfully
     perform a mode-4 interrogation. Perform the troubleshooting
     procedure for the modification.

263. Go to menu 3.17, page 4. Change the parameters of alarms 52FB and
     52FC to match the printout from step 32.

264. Go to menu 3.18, page 4. Change the parameters of alarms 5346 and
     5347 to match the printout from step 34.

265. Go to mode-4 vault no. 1. Open the vault door and restore the LDC
     CONTROL switch to the setting recorded in step 24.

266. At the LDC, go to menu 3.19.3. Change all alarm enables to the
     values that were printed in step 15.

267. Go to the top level menu, release control, and log off.

268. Close and lock the front door to mode-4 vault no. 1.

269. The Test After Modification Procedure For The ATCBI-6M MODE-4 Vault
     Cable Modification is complete.

**APPENDIX 9. ATCBI-5 DECOMMISSIONING PROCEDURE**

17. Schedule 4 hours of downtime before proceeding.

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1.  Find the spare DCD and EEPROM. These will be installed during the
    procedure.

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270. Find TI 6340.35. Make sure that Paragraph 6.5.3, Backup Spare
     EEPROM, is in the TI. This was distributed as a part of
     SDR-ARSR4-009.

271. Go to the ARSR-4 data processor cabinet.

272. Open the cabinet door.

273. Set the boot strap loader switch to EEPROM and push the RESET
     button. This flushes out any changed parameters in the system.

274. Go to the LDC.

275. When the cold start is finished, log in and take control. Go to
     menu 5.6.2.2. Print both pages of this menu.

276. Go to menu 5.6.2.3. Print both pages of this menu.

277. Examine menu 5.6.2.2, page 2 and 5.6.2.3, page 2.

278. Look at the WEATHER VECTOR row.

279. Mark any users that have a WEATHER VECTOR format number equal to 48
     as "NWS" (National Weather Service). These users will not be turned
     off in the following steps.

280. Go to menu 5.6.2.1. Turn off all users except users 19, 20, and any
     identified as NWS users. This is shown in appendix 5, figure 1.

281. Print menu 5.6.2.1 for the FRDF.

282. If changes were made, press CTRL-T to get to menu 5.6.2.

283. Choose option 8 to load changes.

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2.  Do not remove the beacon/mode-4 boards from the system even though
    the alarms are turned off. The system will not boot reliably with
    these boards removed.

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284. Go to menu 3.17.

285. Disable all alarms on all pages.

286. Print all pages of this menu for the FRDF.

287. Go to menu 3.18.

288. Disable all alarms on all pages.

289. Print all pages of this menu for the FRDF.

290. Go to menu 3.15.8. Disable alarms 50E3, BTX A ATCRBS ERROR and
     50E4, BTX A MODE4 ERROR.

291. Print this menu for the FRDF.

292. Go to menu 3.15.9. Disable alarms 50FD, BTX B ATCRBS ERROR and
     50FE, BTX B MODE4 ERROR.

293. Print this menu for the FRDF.

294. Go to menu 5.4.2. Set the BSR REPORT AGE to 0 iACPs. Set BSR PURGE
     INTERVAL to 64 iACPs.

295. Print this menu for the FRDF.

296. If changes were made, press CTRL-T. Choose option 3 to load
     changes.

297. Go to menu 5.9.1.

298. Set the RBPM ONSITE to 0 (not onsite). Also correct the year if
     necessary.

299. Print this menu for the FRDF.

300. If changes were made, press CTRL-T to get to menu 5.9. Choose
     option 4 to load changes.

301. Find the radar collimation sheets left during ATCBI-6M
     optimization. These will be part of the ATCBI-6M FRDF. They are
     printouts of menus 5.1 and 5.2.5.3.

302. At the LDC, go to menu 5.1. Compare the current northmark offsets
     to those listed on the collimation sheet. If they are different, do
     the following:

     a.  Press CTRL-D.

     b.  Enter the northmark offsets listed on the ATCBI-6M collimation
         sheet.

     c.  Enter the BEACON/RADAR AZIMUTH OFFSET listed on the ATCBI-6M
         collimation sheet. If this is the same as the current
         parameter, reenter it anyway.

     d.  Press CTRL-C.

     e.  Select option 1 to load these changes.

     f.  Print this menu for the ARSR-4 FRDF.

303. Go to menu 5.2.5.3. Compare the RANGE BIAS parameters to those
     listed on the collimation sheet. If they are different, perform the
     following:

     a.  Change all 16 RANGE BIAS parameters to match those on the
         collimation sheet.

     b.  Print this menu for the ARSR-4 FRDF.

     c.  If changes were made, press CTRL-T to get to menu 5.2. Choose
         option 9 to install these changes.

304. Go to menu 1.2.7. Put EEPROM B into STBY and then LOCK.

305. Go to menu 1.3. Make sure that all sectors are in VIP.

306. Press CTRL-T.

307. Choose of option 11 to save SAP/FAPs to EEPROM.

308. Choose of option 1 to execute this command.

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18. Make sure that the MDT shows the message "Offline PROM board burned
    successfully". Press CTRL-G to clear this message. Then make sure
    that the MDT shows the message "Online PROM board burned
    successfully". Press CTRL-G to clear this message.

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309. Press CTRL-T.

310. After 2 scans choose option 12 to save safe data to EEPROM.

311. Choose option 1 to execute this command.

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19. Make sure that the MDT shows the message "Offline PROM board burned
    successfully". Press CTRL-G to clear this message. Then make sure
    that the MDT shows the message "Online PROM board burned
    successfully". Press CTRL-G to clear this message.

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312. Go to the data processor cabinet.

313. Set the boot loader switch to EEPROM and push the reset button.

314. When the system comes back up, log in and take control.

315. Go to menu 3.17. Make sure that the alarms are still disabled.

316. Go to menu 5.6.2.1. Make sure that the users are still configured
     like those printed in step 13.

317. Complete the procedure in TI 6340.35, paragraph 6.5.4, to save the
     new configuration to the DCD. Use the unique filename "BI6COMM"
     instead of "XXX" in paragraph 6.5.4, steps 2c, 5d(4), 5d(9), and
     5d(10). For steps 5d(9) and 5d(10), rename the "BI6COMM.NAP" and
     "BI6COMM.SAF" files to "A4OC-XXX.NAP" and "A4OC-XXX.SAF"
     respectively using the current software build for "XXX".

318. Go to the data processor cabinet. Set the boot loader switch to
     DISK and push the reset button.

319. Go to the LDC.

320. Log in and take control.

321. Go to menu 3.17.

322. Make sure that the beacon alarms are still disabled.

323. If not, the SAPS/FAPs did not get saved to the disk properly,
     return to step 44, above.

324. Go to the data processor cabinet.

325. Set the boot loader switch to EEPROM and push the reset button.

326. Complete the procedure in TI 6340.35, paragraph 6.5.3, to backup
     the spare EEPROM.

327. Complete the procedure in TI 6340.35, paragraph 6.5.5, to backup
     the software and maps to the spare DRPC.

328. Complete the procedure in TI 6340.35, paragraph 6.5.6, to backup
     the software to the spare DCD.

329. Go to the LDC.

330. Log in and take control.

331. Go to menu 1.1.

332. Put the system in REPR.

333. Turn the transmitter OFF.

334. Go to the radar cable junction box (RCJB). Remove the RBPM/GPIB
     cable from jack J27.

335. Remove CHA beacon video from J31 and CHB beacon video from J32.
     Also remove beacon mode pairs from J52.

     **CAUTION:** Do not leave the beacon video (RCJB jacks J31 and J32)
     or beacon mode pairs (RCJB jack J52) attached during normal ARSR-4
     operation. Although these can be reattached in order to do a data
     extraction, leaving beacon video and mode pairs attached during
     normal operation will cause ARSR-4 stability problems resulting in
     unplanned outages.

336. Find the stepladder, item 9g. Set the ladder in front of the data
     processor cabinet.

337. Find the drop light, item 9e. Connect it in at the data processor
     convenience outlet.

338. On top of data processor find W51P1 which is attached to 6J15.
     Refer to TI 6340.35, section 11, volume 2, figure 11-1, for the
     location of this connector.

339. Remove W51P1 using a no.1 standard screwdriver.

340. Pull cable W51 through cable tray to ATCBI-6M. Connect cable W51 to
     the KIR Interface Unit, J26 using a no. 1 standard screwdriver. Do
     not over tighten the screw locks.

341. Go to the DRPC. Restart PAS_COLL if it is not already started.

342. Go to the LDC. Cold start the system.

343. When the ARSR-4 is running, log in and take control. Turn the
     transmitter on if not already on.

344. Press CTRL-A to get to the alarm screen.

345. Make sure that there are no beacon/mode-4 alarms on menus 3.17 or
     3.18.

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20. At mode-4 sites, do not turn off mode-4 safe alarms 53E9, 53EA,
    53EB, 53EC, 53FB, or 53FC. These are still monitored through the
    ARSR-4 RMM and not the ATCBI-6M RMM (RMC).

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346. Also make sure there are no mode-4 safe alarms on 3.19.3.

347. Monitor PAS_COLL for 10 minutes. Make sure that no user alarms,
     beacon/mode-4 alarms, or mode-4 safe alarms occur within the 10
     minute monitoring period.

348. If this is not a mode-4 site, skip to step 83.

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4.  Do not push the mode-4 switch up or down. It is designed to operate
    left or right.

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349. For mode-4 sites, go to the ATCBI-6M. Push the mode-4 switch
     assembly left to interrogate mode-4. This switch can be pushed
     either left or right to interrogate mode-4.

350. Make sure that the ATCBI-6M gives no errors due to the mode-4
     interrogation.

351. The ATCBI-5 Decommissioning Procedure complete.

     **APPENDIX 10. TEST AFTER MODIFICATION PROCEDURE FOR ATCBI-5
     DECOMMISSIONING**

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1.  Go to the LDC. You will already be logged in.

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352. Go to menu 2.4.8.5, page 1.

353. Make sure that user 19 is receiving first function data (1st FN RDR
     ONLY).

354. Make sure that user 20 is receiving second function data (2nd FN
     RDR ONLY).

355. Go to menu 2.4.8.5 page 2.

356. Make sure that a search RTQC is being sent to users 19 and 20.

357. Make sure that status messages are being sent to users 19 and 20.

358. Go to menu 3.15.14. Make sure that there are no alarms on SIO 1 or
     SIO 3.

359. Go to the ATCBI-6M LMT (Local Maintenance Terminal). Go to CM1.
     Make sure that both the PSRIN MIL and PSRIN CIV are green. If not,
     the ATCBI-6M is not receiving either first or second function data
     respectively from the ARSR-4.

360. At the RCJB, use a no. 1 standard screwdriver to remove the cable
     connected to AF1 (J28).

361. At the LMT, make sure that PSRIN MIL is white and PSRIN CIV is
     green. If PSRIN CIV is white and PSRIN MIL is green, the first and
     second function feeds are attached backwards.

362. At the RCJB, reattach the cable connected to AF1 (J28). Remove the
     cable attached to AF2 (J29).

363. At the LMT, make sure that PSRIN MIL is green and PSRIN CIV is
     white. If PSRIN CIV is still green, the ATCBI-6M second function
     data input is not coming from the proper port (AF2, user 20).

364. At the RCJB, reattach the cable connected to AF2 (J29).

365. Go to the DRPC. Maximize the PAS_COLL screen.

366. At the PAS_COLL screen, scroll to the top (most recent) entry.
     Record the time of the latest entry.

367. Monitor PAS_COLL for 30 minutes. Make sure that no beacon/mode-4 or
     user alarms are present.

368. At the LDC, logoff to release control.

369. The Test After Modification Procedure For ATCBI-5 Decommissioning
     is complete.

ATTACHMENT 2. INSTRUCTION BOOK CHANGES