The Aviation DataBase: Service Information: Cobham
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Continued Airworthiness Instructions
NameRevisionLangSubjectDate
A en Flexcomm II1/18/2000
A en VCS-40C System5/7/2002
A en P-2000 Systems12/19/2003
A en Flexcomm I11/24/1998
Drawings
NameRevisionLangSubjectDate
AJ en Antenna, ADF Outline3/20/2009
AK en Antenna, ADF Outline8/15/2011
Equipment Manuals
NameRevisionLangSubjectDate
C en Microphone Amplifier 263-[ ]10/23/2013
1.12 en Area Microphone Amplifier 266-[ ]10/6/2011
1.00 en Area Microphone Preamplifier 265-0056/3/2013
2.30 en Audio Selector Panel 343-[ ]12/4/2014
1.30 en Audio Selector Panel 344-[ ]10/25/2013
1.40 en Audio Selector Panel 380-[ ]12/3/2010
1.05 en Audio Control Amplifier 438-[ ]1/17/2011
L en Audio Selector Panel 555-[ ]6/10/2004
1.20 en Aural Warning Generator 611-[ ]8/20/2014
1.20 en Aural Warning Generator 611-[ ]8/12/2014
1.10 en Digital Audio Control Amplifier 700-[ ]10/26/2010
1.20 en Switch Panel 803-009, 803-012, 803-013 and 803-01411/30/2011
1.20 en Switch Panel 804-[ ]8/17/2011
1.21 en Switch Panel 805-[ ]12/6/2011
1.13 en Switch Panel 808-[ ]1/7/2011
1.13 en Switch Panel 809-[ ]1/7/2011
1.10 en Cabin Briefer 93012/12/2008
Information Bulletins
NameRevisionLangSubjectDate
A en 415 to 438 Conversion7/10/2014
A en 437 to 438 Conversion7/10/2014
en Dual Audio Alerting System4/11/2002
en Four/Eight Place Intercom - Headphone Impedance & Exterior Labelling3/6/2013
A en Notice of Invalid Configuration2/14/2014
en TAC/COM Control Heads5/11/2000
A en Part Number Cross Reference for Obsolete Materials11/8/2016
E en Part Number Cross Reference for Obsolete Materials12/20/2017
en Weight Identification9/7/2017
B en Label Application11/9/2015
en Alternate -13 and -17 Subassemblies (MOD 2)5/11/2016
A en SWID 26 Incompatibility W/C-5000 Mode 1 Operation8/18/2014
A en HW/SW Update8/20/2015
en TAC/COM Control Heads12/17/2001
en Left and Right User MIC Bias Circuits Incompatible with PAX Bias Circuit11/18/2008
en Universal Interface Amplifier12/12/2005
en Syn-Tech XTR Interface6/8/1995
Installation & Operation Manual Supplements
NameRevisionLangSubjectDate
2.00 en CH400-4J, -612 'A' Inerface (AM Comm Series)9/7/2012
2.00 en CH400-3B, -4E 'C' Interface (FliteFone 40)9/10/2012
2.00 en CH400-17 'D, D1' Interface (Astro/XTL-5000)9/11/2012
2.00 en CH400-81 'F' Interface (Flexcomm)9/14/2012
2.00 en CH400-14 "H, J' Interface (NTX Series)9/14/2012
2.00 en CH400-10, 101, 4A, 4D 'K, M' Interface (Midland Syn-Tech)9/17/2012
2.00 en CH400-15 'L' Interface (Motorola Spectra)9/18/2012
2.00 en CH400-4A, 4H, 4I, 4M, 9, 91, NT150 'N, T, V' Interface (NT Series)9/18/2012
2.00 en CH400-4B, 4F, 4G, 4M, 6, 61, 611, 7, 7B, 7C, 7C1, 7C2 'P, Q, R, U' Inerface (RT7200/9600)9/19/2012
2.00 en TH250C-006 Custom Tac/Com Controller9/21/2012
2.00 en TH450C-002 Custom Tac/Com Controller9/25/2012
2.00 en CH400-12 'Y' Interface (Serial Card)9/26/2012
2.00 en CH410-3 'Z' Interface (Tac/Com Slave)9/26/2012
2.00 en AA31-109 ICS Mode Controller10/23/2012
2.00 en AA31-901 ICS Mode Controller10/24/2012
2.00 en AA35-000 Audio Mixer Panel8/27/2012
2.00 en AA35-100 Audio Mixer Panel8/27/2012
2.00 en AA35-202 Audio Mixer Panel8/28/2012
2.00 en AA35-400 Audio Mixer Panel8/28/2012
2.00 en AA37-003 Dual Channel Alerting System10/24/2012
1.00 en NPX138-050 Panel Mount VHF FM Transceiver6/29/2010
1.00 en N301A-101 Audio Controller2/23/2012
1.00 en N301A-100 Audio Controller2/23/2012
1.01 en N301A-200 Audio Controller5/17/2012
1.01 en N301A-300 Audio Controller5/17/2012
1.22 en N301A-076 Audio Controller4/30/2012
1.22 en N301A-075 Audio Controller4/30/2012
2.03 en N301A-035 Audio Controller4/30/2012
1.00 en N301A-020 Audio Controller2/19/2001
AA en N335-050 Audio Controller5/31/2017
AA en N335-056 Audio Controller5/31/2017
AA en N335-069 Audio Controller5/31/2017
AA en N335-070 Audio Controller5/31/2017
AA en N335-072 Audio Controller5/31/2017
AA en N335-073 Audio Controller5/31/2017
AA en N335 Series Audio Controller5/31/2017
2.00 en AA38-506 Four Place Intercom11/29/2012
2.00 en AA38-602 Hi-Z Eight Place Intercom11/29/2012
1.00 en 300A-002 Audio Panel9/29/2010
1.01 en ACP51-102 DACS Audio Control Panel7/16/2010
1.20 en 802-008 Switch Panel7/28/2010
1.20 en 802-007 Switch Panel6/28/2010
1.20 en 802-005 Switch Panel6/25/2010
1.20 en 802-003 Switch Panel7/28/2010
1.30 en 802-006 Switch Panel6/28/2010
1.40 en 802-002 Switch Panel7/28/2010
1.12 en 806-002, 807-002 Audo Selector Panel10/15/2008
1.00 en 806-005, 807-005 Audo Selector Panel10/15/2014
1.10 en 806-001, 801-001 Audo Selector Panel12/13/2005
1.20 en 806-004, 807-004 Audo Selector Panel12/15/2005
1.00 en 3110 Audio Control Panel9/16/2005
Installation & Operation Manuals
NameRevisionLangSubjectDate
AA en DevCS, Device Configuration Software5/24/2016
Amend 3 en 250 Passenger Spearker Amplifier8/9/2011
Amend 2 en 251 Passenger Spearker Amplifier8/9/2011
1.01 en 630A-[ ] ASPU1/22/2014
AA en 630A-[ ] ASPU11/23/2016
1.03 en Audio Management Unit (AMU) 4420-[ ]9/3/2010
1.04 en Audio Management Unit (AMU) 4420-[ ]7/15/2011
AA en Audio Management Unit (AMU) 4420-[ ]1/31/2017
AA en Audio Control Panel (ACP) 55201/31/2017
1.01 en Single Channel Audio Controller9/12/2014
5.00 en TAC/COM Series Control Head4/26/2012
5.00 en AA80 InterVOX Intercom Systems4/30/2012
2.00 en AA82 InterMusic Stereo Intercom System4/16/2012
5.00 en AA83-001 InterMusic Stereo Intercom System (SN 2938 and below)4/17/2012
5.00 en AA83-001 InterMusic Stereo Intercom System (SN 2939 and later)4/18/2012
5.00 en AA83-100 InterMusic Stereo Intercom System3/15/2012
5.00 en AA31 ICS Mode Controller4/14/2012
5.00 en LD12-001 Lamp Dimmer5/3/2012
5.00 en RS16 Series Remote Switch5/4/2012
2.00 en CC450-0V2 Communications Controller5/5/2012
5.00 en AA24/AA25 Series Single User Audio Controller4/14/2012
5.00 en AMS42/AMS44 Series Dual Channel Audio Controllers5/29/2012
4.11 en AA20-431 Cabin PA System2/17/2011
5.00 en AA23 Speaker Amplifier5/5/2012
2.00 en AA35-001 Audio Mixer Panel5/8/2012
5.00 en NTX VHF-FM Series Remote Mount Transceivers5/9/2012
2.00 en RA Series Remote Attenuator3/9/2012
5.00 en VR28-013 Voltage Regulator (Up to SN 1220)5/12/2012
5.00 en VR28-013 DC/DC Power Converter (SN 1221 and later)5/12/2012
Iss 4.02 en AA34 Series Universal Radio Interface5/21/2010
5.00 en AA37 Series Alerting System4/16/2012
5.00 en UT12-000 Universal Tone Encoder/Decoder5/15/2012
5.00 en AA36-ECF Tie Line Adapter4/15/2012
2.00 en AA39 Series Headset Adapters5/17/2012
2.00 en AA38-5xx, -6xx, -7xx and -8xx Series Local ICS Loop5/26/2012
Iss 4.02 en PTA12-000 POTS Telephone Adapter4/13/2010
Iss 4.03 en PTA12-100 POTS Telephone Adapter with Display11/24/2014
Iss 5.00 en AA36-100 Digital ICS Tie Line Adapter4/15/2012
2.00 en AMS43 Single Channel Audio Controller4/22/2012
2.00 en N300-001 and N300-002 Audio Controller5/26/2012
5.00 en NTX403 Series Remote Mount UHF-FM Transceiver6/6/2012
2.00 en N300-003 and N300-004 Audio Controller6/7/2012
4.02 en NPX136D Series VHF P25 Panel Mount Transciever3/24/2010
2.00 en AA12S Series Compact Audio Controller4/14/2012
5.00 en NTA01-001 Motorola Series Radio Adapter6/12/2012
2.00 en MB01-001 Matching Box6/12/2012
AA en ACP53-001 DACS Audio Control Panel10/3/2017
Iss 1.03 en ACP53-001 DACS Audio Control Panel7/16/2010
1.11 en AMU50-001 Audio Management Unit5/22/2012
1.12 en AMU50-001 Audio Management Unit3/5/2013
1.13 en AMU50-001 Audio Management Unit9/24/2014
1.02 en RM01-001 Remote Memory7/14/2010
AA en RM01-001 Remote Memory10/4/2017
Iss 1.11 en PIA01-001 Passenger Intercom Amplifier9/24/2014
Iss 1.01 en 300A-000 Audio Panel10/26/2010
Iss 1.04 en ACP51-100 DACS Audio Control Panel4/15/2014
Iss 1.04 en ACP54-001 DACS Audio Control Panel4/15/2014
Iss 1.01 en ERU50-001 Emergency Relay Unit11/15/2012
2.00 en LD12-002 LED Dimmer6/19/2012
3.00 en AA95-766 Single Channel Audio Controller6/20/2012
3.00 en 210 Voice Activated Switch4/26/2012
Iss 4.12 en 240 Passenger Speaker Amplifier5/26/2010
4.20 en 245 Speaker Amplifier8/29/2013
Iss 2.10 en 247 Audio Mixing Amplifier3/6/2012
4.10 en 270 Universal Interface Amplifier12/12/2006
Iss 2.00 en 437 Audio Control Amplifier6/4/2008
Iss 4.12 en 802-009 Switch Panel6/24/2010
Iss 4.01 en 806 and 807 Audio Selector Panels7/24/2008
4.00 en 3110 Audio Control Panel11/21/2006
Installation Bulletins
NameRevisionLangSubjectDate
1 en Programming and Interface Between the Analog Interface Unit (AIU-1) and a S-Tec 65 Autopilot2/17/2004
2 en The Wiring Changes for Proper Integration of the Flight Director Command Bar Presentation to the Chelton EFIS and AIU from the Sperry SPZ-200/500 Flight Director Computer. Scaling Factors for the AIU Flight Director Horizontal and Vertical Detectors are Increased7/18/2005
1 en Correction to the AIU Configuration and Wiring Diagram Between the AIU and the Century 2000 Autopilot8/1/2005
en Programming and Interface Between the Analog Interface Unit (AIU-1) and a Chelton AP-3C Autopilot Operating at 5KHz AC Datum3/31/2005
en Programming and Interface Between the Analog Interface Unit (AIU-1) and a Bendix H14 Autopilot Operating at 400Hz AC Datum8/1/2005
en Programming and Interface Between the Analog Interface Unit (AIU-1) and a Bendix/King KFC-275 Autopilot Operating DC Datum8/1/2005
en Programming and Interface Between the Analog Interface Unit (AIU-1) and a Bendix/King KFC-250 Autopilot with a KA-118 Adaptor Operating at 400Hz AC Datum8/1/2005
en Addition of Transmit Interlock Capability to the VC 401B Series III Communications Transceiver10/16/1987
en Crimping Tools for Bendix/King Series III CNI2/28/1988
en Metal Impregnated AT 434A ADF Antenna Gasket8/8/1988
en All Audio Controllers (AA90/95/AMS40/41/42/43/44...)3/3/1990
Installation Manual Supplements
NameRevisionLangSubjectDate
B en C-500 Communications Managemeng Controller7/17/1998
Installation Manuals
NameRevisionLangSubjectDate
C en Flexcomm I2/19/2009
B en Flexcomm I Addendum7/21/1999
F en DMS 44A5/19/2010
G en DMS 44A12/7/2011
J en VNS 41A Navigation System4/17/2009
K en VCS-40A VHF Communication System2/27/2007
F en DFS 43A Automatic Direction Finder System7/10/2008
H en Flexcomm II (P-25 Capable)12/20/2010
J en Flexcomm II (P-25 Capable)7/25/2012
K en Flexcomm II (P-25 Capable)2/13/2013
N en Flexcomm II (P-25 Capable)4/29/2016
P en Flexcomm II (P-25 Capable)8/18/2017
J en CDM-451 Distance Measuring System3/24/2009
K en CDM-451 Distance Measuring System2/13/2013
H en VCS-40C VHF Communication System2/27/2007
H en FliteLine CD7/29/2010
J en FliteLine CD4/13/2012
K en FliteLine CD2/20/2013
M en FliteLine CD2/20/2013
N en FliteLine CD4/19/2017
G en CVC-151 VHF Communication System9/10/2009
H en CVC-151 VHF Communication System2/26/2013
J en CVC-151 VHF Communication System2/14/2017
L en CVC-151 VHF Communication System10/10/2017
G en CVN-251 VHF Navigation System9/21/2009
H en CVN-251 VHF Navigation System3/6/2013
K en CVN-251 VHF Navigation System2/16/2017
L en CVN-251 VHF Navigation System6/5/2017
F en P-2000/C-2000/RT-20002/4/2008
H en Flexcomm II C-5000 (Non-Digital)12/7/2012
J en Flexcomm II C-5000 (Non-Digital)9/1/2013
K en Flexcomm II C-5000 (Non-Digital)4/29/2016
E en Flitefone VI
A en Aural Warning Generator 600 and 600-0017/30/2014
A en Aural Warning Tone Generator 6037/30/2014
1.10 en Switch Panel 803-008 and 803-01711/30/2011
AA en Switch Panel 803-008 and 803-0172/8/2018
Maintenance Manual Supplements
NameRevisionLangSubjectDate
2.00 en CH400-17 'D, D1' Interface (Astro/XTL-5000)9/11/2012
Maintenance Manuals
NameRevisionLangSubjectDate
Iss AA en PTA12-300 POTS Telephone Adapter with NVIS Display7/27/2017
Miscellaneous Guides
NameRevisionLangSubjectDate
D en Product Guide: Wulfsberg11/30/2006
A en Quick Reference Guide: C-5000 Digital P-253/13/2014
Operator's Manual Supplements
NameRevisionLangSubjectDate
A en C-5000 Communication Management Controller1/28/2000
Operator's Manuals
NameRevisionLangSubjectDate
E en Flitefone VI
B en C-962A Narrow Band Control Unit8/9/2000
A en C-1000 Narrow Band Control Head
E en C-5000 Communication Management Controller7/29/2010
F en C-5000 Communication Management Controller11/21/2013
C en CDM-4519/21/2009
D en Flexcomm 2000 (P-2000/C-2000/RT-2000)9/30/2007
C en C-5000 Communication Management Controller2/5/2001
en C-1000/S
1.10 en Digital Audio Control System (DACS)3/8/2012
Pilot's Guides
NameRevisionLangSubjectDate
B en Series III Avionics
B en C-5000 Communication Management Controller6/19/2009
C en C-5000 Communication Management Controller11/21/2013
F en FliteLine Avionics System2/24/2010
A en CDF-992 Direction Finder, Control Display, System-79/20/2006
Service Bulletins
NameRevisionLangSubjectDate
A en RT-138 GD Receiver to Improve Spurious Performance9/10/1998
en TRI-BAND ELT Antenna 21-41: Prevention of Static Transmission to Connected ELT4/18/2011
en 804-001 to 804-016 Conversion2/27/2017
A en Inspect C56 for Inter-Board Cable Clearance1/25/2018
A en 251-XXX Wire Staking5/9/2013
A en Bonding Improvement1/21/2015
3 en Emergency Power Supply (EPS) - P/N 301-3100 Amdt. A become P/N 301-3100 Amdt.B7/30/2015
A en Reduce Nuisance Headphone Protection Circuit Trips10/28/2014
A en Normal/Backup Switch12/5/2014
B en Facial Seal D-Sub Replacement2/20/2013
en Knob Replacement3/30/2012
A en TSO Label, Backlighting Voltage Specification Inspection12/14/2015
en Replacement of Obsolete Voice Recorder V-Chip10/28/2016
A en Cats Eye Retension Enhancement2/12/2015
B en ECO 418-51-0018/3/2016
A en 630A8/2/2013
A en Application of MOD3, A3/17/2016
B en Application of MOD3, A9/13/2017
en Stop the Playback of Autopilot Disconnect2/24/2017
en P1 Connector and Pin Identification9/2/2016
A en Replacement of U4, MOD D5/18/2013
A en MOD 107/9/2014
A en MOD 117/9/2014
A en MOD 127/9/2014
A en AA20-43110/4/2012
en Corrected Alert 3 Triggered (MOD 4)11/22/2013
en Dual Audio Alerting System - Incorrect Power Output Levels7/29/1997
en Mod 2, Add Coupling Capacitors to Inputs6/12/2003
A en ACP51-1004/4/2014
B en ACP 542/22/2012
B en ACP542/10/2012
en VOX\ICS Tie Line Subassembly3/9/1995
A en Replace Diode IN4148 with Schottky Diode7/8/2003
A en Improve Station Passage Delay11/10/2003
A en Part Number Correction12/16/2014
B en Replacement Obsolete LED 47-83-0013/17/2015
C en Upgrade for Narrowband Operation8/9/2000
A en Makes Tone Output More Uniform1/13/2000
A en Narrow Band Upgrade11/22/2000
A en Improve CTCSS & DCS Receives Tone Operation3/18/1998
en Tone Board Changes to Improve DCS Operations8/31/1997
en Modification of C-5000 Control Head for Revision 1.07 Software4/30/1991
A en CTCSS Tone Software Upgrade11/23/1998
en Increase Range8/31/1997
en Modification of C-5000 Control Head for Revision 1.08 Software7/1/1991
A en Improves CTCSS Tone Operation11/28/1998
en Improve DCS Tone Operations During Transmit8/31/1997
A en Forces RT System into Direct Mode12/22/1998
C en Provides Short Circuit Protection3/22/1999
B en Changes Display Trans. to Higher Power3/30/1999
A en Improves Vibration Tolerance4/7/1999
A en Gray Polarized Filter10/25/1999
B en Version 15 Software1/28/2000
A en Fixes Unsquelch for Main Channel Receiver5/16/2002
B en Conversion to External DES Encryption6/11/2003
A en EL Panel Drive Circuitry8/30/2012
A en Replacement of Q5, 6, 7 & CR2 on Display Board11/20/2012
A en Correct Headset Audio Frequency Roll-Off5/1/2013
A en Inspection of C24 Clearance to Surface Mounted Components on Power Supply Board3/19/2014
A en Replacement of Obsolete Q9 Power Supply Transistor5/9/2014
B en C-5000P Upgrade, SWID 126/22/2015
en Short Circuit Prevention10/18/2017
en Correction of Over-Voltage Cut Off10/20/2017
en Jackscrew Height Reduction on System Interface Board10/31/2017
en Increase Activation Force for Transferring Frequency11/8/1988
A en Defines MOD 5 and above as 8.33 KHz Capable2/1/2001
B en Replace Obsolete LCD Display Module7/6/2006
B en Replace Obsolete LCD Display Module7/6/2006
en Set Screw/Half Switch7/31/1999
en Re-Install Set Screw7/31/1999
B en Replace Obsolete LCD Display Module7/6/2006
A en Adding Kapton Tape to Display Module Assembly4/19/2012
B en Replace Obsolete LCD Display Module7/6/2006
D en SWID 11 & HW Mod 710/16/2014
C en HWMOD 7, SWID 126/8/2016
en Transmitter Power Enhancement1/6/2017
en Tac/Com Interface Board - Intermittent Operation3/31/1998
en Tac/Com XTR I/F7/14/1994
A en SMOD-09 Installation4/20/2012
A en SMOD-08 Installation4/20/2012
A en SMOD-07 Installation4/20/2012
A en Phase I L.O. Stability Improvement4/10/2013
A en Connector J400/J600 Insulation3/16/2012
en Transmitter Frequency Modulation Reduction Enhancement1/7/2017
A en EMI Gasket Installation5/22/2012
B en EMI Gasket Installation10/10/2017
en Installation of HW MOD 4, Stabilization of 6.5V Switching Regulator5/19/2017
A en Use of Capacitors with Higher Voltage9/6/2002
B en Use of Capacitor for Improved Stability10/7/2003
A en Switch Transformer Drive Circuitry6/18/2003
A en Replacement of Temperature Sensitive C47, C48 on Analog Board11/20/2012
A en T7 Circuit Temperature Enhancement5/21/2013
A en Replacement of Temperature Sensitive C4 and C5 on Analog Board3/24/2014
A en Power Supply Reliability Enhancement4/20/2016
B en Power Supply Reliability Enhancement1/2/2018
en I/O Board Component Height Verification2/16/2017
B en Replaces Tantalum Cap with Aluminum Cap5/18/2001
B en Improve Sensitivity at High Temps2/8/2006
C en Improve Sensitivity at High Temps8/16/2016
B en Display Range Error7/11/2006
D en Improves Station Over Flight7/11/2006
E en Improves Station Over Flight6/30/2016
B en Add Gimmick Capacitor to the VCO Board5/30/2001
C en Add Gimmick Capacitor to the VCO Board12/18/2015
C en Replacement of Philips 87C528 CPU4/21/2006
D en Replacement of Philips 87C528 CPU1/14/2017
B en Mod. 11 Software ID -204/17/2000
B en Reduce Frequency Pulling in Frequency Synthesizer3/17/2006
A en Replace Capacitor C2 to Allow Use of 2 Lead Device9/19/2014
B en Power Supply Reliability Enhancement4/20/2016
A en ECR AX250-3199C8/3/2012
B en ECR AX250-3199C4/11/2017
A en Crimp Terminal Recall9/1/2010
A en Learn Mode Enhancement (SWID 06)2/25/2013
A en Prevent Processor Lockup (SWID 08)5/13/2013
A en Removing Vote Scan Capability from Motorola XTS-5000 Tanapa Radios1/14/2015
A en (MOD 04) Narrowband Configuration per FCC Mandate2/13/2013
A en Replacement of Obsolete L.E.D.7/15/2014
A en Software Update 4.0F, GPS/WAAS3/26/2003
C en Software Update 4.0H8/19/2003
A en Software Update 4.0J8/19/2003
A en Software Application for FCC #08/22/2003
B en Software Application 4.1A11/18/2003
B en GPS Replacement11/13/2003
A en Navigation Database Error11/18/2003
A en Departure and Missed Approach Procedure11/18/2003
A en Software Application Version 5.0A6/23/2004
A en KN-53 Glideslope Integration8/30/2004
A en Crossbow AHRS Replacement10/25/2004
B en AIU-1 Replacement1/25/2005
C en Mandatory Software Application Version 5.0B1/16/2006
E en Mandatory Software Application Version 5.0B4/17/2006
B en Mandatory Shadin ADC-2000 Replacement6/13/2005
A en IDU Limits Digital Gain Modification7/25/2005
A en Garmin GDL-90 ADS-B Interface Provisions11/9/2005
A en Ram Replacement3/21/2006
B en Software Application Version 5.0C11/9/2006
E en Software Application Version 6.0B2/16/2010
A en GPS Replacement7/11/2007
B en Annunciated Switch Replacement11/7/2008
A en Remove Video Ghosting10/18/2012
A en PS2 Switcher Regulation Improvement10/18/2012
A en AvioIP V2.2 SW Installation7/14/2014
en Incorporate MOD 14/20/2017
en Audio Controller6/1/2017
A en MOD 129/11/2013
en Codeplug for 255 Channels6/23/2017
C en Narrowband Configuration (Mod 22) per FCC Mandate10/20/2016
A en M103 Socket Adapter Replacement9/3/2013
A en Receiver Birdie Fix, 156.8MHz2/13/2014
B en Reduction of Transmitter Harmonics (MOD 23)8/12/2015
en 156 MHz Receiver Birdie Fix (Mod 24)1/13/2017
en Convert NPX138N-300 to NPX138N-3B011/14/2017
en Installation of Tekmos Microcontrollers (HW Mod 26)12/20/2017
en High Output Power not Meeting Spec6/26/2013
en Failing Crystal Oscillators7/30/1997
en MOD 1, TX Power Level/Stability6/18/1998
en MOD 2,TX Relay "Chatters" at 174 MHz6/18/1998
en MOD 6, Low TX Deviation During Low Temperature Operation6/18/1998
en MOD 5, VCO Gain and Loop Filter for Subaudible Tones (MOD 7, NTX138-5 DCS Change)6/26/1998
en MOD 3, Test Set Compatibility Requirements6/18/1998
en MOD 4, DCS Mods, RNOAF Contract Requirements6/18/1998
A en L.E.D. Backlighting Replacement3/18/2016
A en ATP Software Configuration for No Mod Units8/9/2012
A en JetLAN Standoff Replacements, M12 and M215/14/2014
A en MOD 1010/18/2012
A en Mod 1 - 510/12/2012
A en JetLAN Standoff Replacements, M215/7/2014
A en MOD 910/12/2012
en Video Signal Clarity MOD 114/12/2010
en PS2 Jumper Mod 126/25/2010
A en I.C. U101 or U601 Replacement Procedure12/15/2014
A en Latitude Technology Firmware3/25/2015
en Improve Operation of Control Panel2/2/1999
A en Add Non-Standard CTCSS Tone8/9/2000
en Modification of RT-30 for Installation of Flexcomm DVP Audio Board3/1/1991
B en Adds Non-Standard CTCSS Tones7/22/1999
A en Attenuating Receiver Sensitivity2/15/2000
A en Narrowband Upgrade7/5/2000
en Modification of RT-138F Transceiver for Improved Encryption and DCS Tone Operation7/15/1991
A en Add Non-Standard CTCSS Tone8/9/2000
A en Incorrect MOD Marking8/17/2000
A en Incompatible Versions of the Synthesizer8/17/2000
B en Narrowband Upgrade10/12/2002
en Modification of RT-138F and RT-406F Transceivers for Improved External Modulation2/15/1990
en Modification of RT-406F Transceiver for Improved Encryption and DCS Tone Operation7/15/1991
en Improve Voice Encryption Operation & Add GE Voice Guard Compatibility1/1/1990
A en Improves Stability & Power Flatness1/21/1999
A en Modification of Synth Board to Prevent Shorting10/1/1997
A en Add Non-Standard CTCSS Tone8/9/2000
A en Improves Stability of Preselector10/23/2000
A en Allows Use of 406 PA Board in Repair1/27/1999
A en Single Zone Implementation11/6/2008
en Improve Transceiver Performance11/9/1998
A en Fixes Inoperative DCS Tone Feature1/18/1999
A en Fixes Active Antenna Tuning6/25/1999
en Disable Carrier Detect Operation10/31/1996
B en Q8 Transistor Replacement8/8/2016
A en RT-5000 Spur Fixes1/6/2012
A en ADC Interposer Board on DSP/Logic Board
A en 12.8Mhz Oscillator Noise Reduction12/19/2011
B en Incorporate SWID 2211/9/2012
B en Narrow Band Mandate Installed (MOD 33)4/1/2016
A en RT-5000 Digital, SWID 241/24/2013
A en RT-5000 Analog, SWID 251/24/2013
A en J101 LocTite® 222 Application4/9/2013
H en Transmitter Harmonic Reduction Enhancement5/14/2015
A en RT-5000 Digital, SWID 261/29/2014
G en RT-5000P Upgrade4/21/2016
A en Part Number Label Cage Code Correction5/16/2014
B en UHF Board, C501 Inspection12/16/2014
A en P.A. Shield Modification7/30/2014
A en ITM Power Wire Inspection8/25/2014
A en Q5, SB 2900 Bias Setting4/1/2015
C en Transmitter Oscillation Correction4/13/2016
B en Tanapa Receiving Process, Uncertified5/12/2016
A en A1-P6, E1-E12 Wire Bundle Restraint5/26/2015
A en Wi2Wi 12.8MHz Synthesizer Oscillator Installation Instructions12/15/2015
A en Connector Clip Inspection4/5/2016
B en Incorpate HW MOD 41 ON Motherboard11/23/2016
en AM Receiver Audio Response Enhancement1/28/2017
en Modification of RT9600 Chassis to Accommodate Fastlock Synthesizer Module4/28/1993
en Modification of RT-9600F Transceiver (Audio Board PN300-2100-003) for Improved Encryption and DCS Tone Operation7/15/1991
E en Modify for Narrowband Operation6/22/2007
en Modification of RT-9600F Transceiver (Audio Board PN300-2100-001) for Improved Encryption and DCS Tone Operation7/15/1991
en Change NVIS Lighting to be Compatible with Navy Lighting Levels10/1/1997
A en CSB WSB Series III Power Supply-01 (Replacement of CR14)10/30/2001
B en CSB WSB Series III Power Supply-01 (Replacement of CR14)4/28/2017
en PTT Delay Circuitry Added6/14/2001
en MOD 21, Correcting "-- NO RADIO --" Fault2/20/2003
en Faceplate Text Change10/24/2001
en Replace Obsolete Beryllium Strip MOD 3111/20/2009
en Replace Obsolete Beryllium Strip MOD 41/11/2010
en Latching Problems with Connector Locking Hardware (MOD 1, 20)11/6/2002
en Software Upgrade to Support W4/W54/12/2007
en Radio OK Out Line11/10/2000
en CH400-612 Activates VHF-20 PTT Circuit During Receive Mode (MOD 22)5/9/2005
en Front Panel Switch Interpretation (MOD 25)3/6/2007
en Faceplate does Not Sit Flush (MOD 27)7/18/2007
en CPU Switch Clearance (MOD 26)5/16/2007
en Replace Obsolete Beryllium Strip (MOD 7)5/7/2010
en Faceplate Bubbling (MOD A)2/28/2007
en Too Much Light Around Knob (MOD A)7/2/2008
en True Sidetone Modification (MOD A)11/28/2003
en Replacement of Transformer Insulators (MOD 12)9/26/2003
en Replacement of Transformer Insulators (MOD 12)3/26/2004
en DIR AUD #1 Level Increase (MOD 13)7/26/2004
en DIR AUD #1 Level Increase (MOD 13)8/17/2004
en ICS Noise (MOD 14)2/14/2007
en ICS Bleedthrough (MOD 15)1/25/2007
en MOD 2, Shorted Capacitor/Output Oscillation2/20/2001
en MOD 3, Q101 Emitter to Collector Short5/24/2002
en Changed Screw Length (MOD 4)5/15/2007
en Changed Screw Length (MOD A)7/17/2007
en Interference from Antennas (MOD A)8/13/2008
en Oscillations at Low Volume (MOD 1)2/25/2009
en Oscillations at Low Volume (MOD 1)10/5/2009
en DCS Inoperative3/13/2001
en MOD 9, U510 Insulator5/3/2005
en RX Failure - High Temp (Mod 11)1/6/2006
en (MOD 8), RF Power Level11/30/2004
en Capacitor Dialectric Leakage6/12/2006
en Transmit Characteristics (NTX138 MOD 14, NTX066 MOD 2)3/8/2007
en Rx Failure at Low Temperatures (MOD 15)3/19/2007
en Firmware Update (MOD 17)2/4/2008
en Obsolete Audio Bandpass Filter (NTX066 MOD 5, NTX138 MOD 18, NTX138E MOD 4)6/26/2008
en High Temperature Failure (MOD A)10/27/2008
en Firmware Update (NTX066 MOD 3, NTX138 MOD 19)2/4/2009
en Aux Receive Audio Level too High (NTX066 MOD 7, NTX138 MOD 20)5/12/2009
en Even High Power Across Frequency Band (NTX066-000, -001 MOD 8, NTX066-002 MOD 1)6/10/2009
en Transmit Power Problem (MOD 6)7/14/2009
en Low Power Tx Output Problem (NTX066-000, -001 MOD 9, NTX066-002 MOD 2)7/31/2009
en Added Shield M8 (NTX066-xxx MOD 10, NTX138-XXX MOD 21, NTX138E-xxx MOD 6, NTX403-xxx MOD 7)11/17/2009
en Changed Capacitor Value C320 on Transmitter Subassembly (NTX066-000 MOD 11, NTX066-001 MOD 11, NTX066-002 MOD 3)4/16/2010
en Removed DCS Circuitry (NTX066-000 MOD 12, NTX066-001 MOD 12, NTX066-002 MOD 4, NTX138-003 MOD 1, NTX138-xxx MOD 22, NTX138E-060 MOD 10, NTX403-xxx MOD 5)8/10/2010
en Power Key Line Reset (MOD 3)5/24/2007
en RFI/EMI Emissions (MOD 4)9/11/2007
en Repair Procedure for Unit with Defective Part 32-23-0801/24/2006
en T103 & T104 Impedance Matching (MOD 1)2/8/2007
en Op-Amp Supply Voltage Increase (MOD 1)6/16/2004
en U401 and Associated Circuitry Replaced on MIC/ICS Amplifier Subassembly (SA4) (MOD 9)11/22/2011
en Connector H/W Change (MOD A)12/22/2005
en Annunciator Dimming Threshold Reduced (MOD D)3/16/2006
en Faceplate Quality (MOD A)3/28/2007
en Faceplate Luminance Corrections6/20/2008
en Added Countersink to Emergency Switch Hole (MOD A)2/13/2009
en Connector J101 Locking Hardware Changed to Threaded Studs (MOD A)3/24/2009
en RX Mute Function Added (MOD B)9/3/2009
en RX Mute Function Added (MOD B)9/2/2009
en Op-Amp Supply Voltage Increase (MOD 3 for AA38-501, -502, -503, -504 - MOD 1 for AA38-703)6/16/2004
en Aux Receive Audio Level too High (MOD 2)5/12/2009
en Receiver Sensitivity Increased (MOD 3)7/14/2009
en PCB Amplifier Hardware (MOD A)7/4/2006
en 8 Ohm Output Shorting to Chassis (MOD B)7/24/2008
en Tac/Com Control - Conversion to TH250-7JJ19/24/1997
en Software Upgrade1/9/2007
en Software Changes12/31/1985
en New Software to Improve Mode Operation10/31/1984
en To Reduce Dead Time12/31/1985
en Tone Deviation Failure (MOD 3)2/14/2005
en Eliminate Time-Out on 429 Reset with Loading Data4/30/1984
en Greater Margin for Overvoltage Protection7/31/1984
1 en Prevent Squelch Closing7/31/1986
en Limit Current Spikes2/28/1985
en Reduce Receiver Noise in Transmitter Sidetone Output3/31/1986
en Increase Display Enable Pulse Width3/31/1986
2 en Change Software ROM COM Controller12/19/1989
C en To Verify Performance Parameters1/17/2001
A en Seal Unused Hole12/11/2002
A en Vibration Parameters During Test4/29/2003
A en Switch Transformer Drive Circuitry6/18/2003
A en Replacement of Choke L17/1/2003
1 en See Note in Service Bulletin9/30/1993
en Prevent Random Breaking Squelch4/15/1987
en Reduce Receiver Self-Interference4/15/1987
1 en Reduce Crosstalk Between Transceivers6/20/1988
en Improve Transceiver Performance8/12/1987
en Incorporate Changes to Audio & Transmitter Boards1/11/1988
en Improve Receiver Spurious Response1/11/1988
en Operation Under Low Volt Conditions without Blanking Display3/15/1988
en Prevent Chirp when Transmitter Unkeyed6/20/1988
1 en Replace Filter Board on CPU Module1/2/1991
en Reduce Amount of Broad-Band Noise on Transmitted Carrier1/7/1991
en Reduce Amount of Spurious Reception (Birds)7/31/1992
B en Reduce Amount of COMM to COMM Interference7/6/2006
B en Add Intermedulation Filter Board & Retune7/6/2006
C en To Meet Requirements of TSO Receiver Spurious Response3/31/2004
A en Installation of SWID 0812/12/2013
A en Power Supply Reliability Enhancement4/20/2016
1 en Extend Operating Frequency Range to 136.975MHz5/29/1990
1 en Conversion to Change Outputs2/29/1992
C en Add Intermodulation Filter Board & Retune10/20/2006
A en Defines MOD 22 and above as New Technology1/13/2001
B en Dual Radio Operation with MOD 22 or 231/15/2001
A en Replace Copper Tape with Conductive Foam3/8/2001
A en Mic Impedance for Use with Non-Carbon Mic Systems4/11/2002
A en Mic Audio Input from Differential to Single Ended5/23/2002
C en Add Resistor to Reduce Drive of Feedback to PLL1/10/2011
C en Transient Protection7/12/2010
A en Vibration Parameters During Test4/29/2003
A en Software MOD 077/18/2003
A en Remove C3 to Eliminate Failure Mode7/18/2003
B en Protect Q5 from Spikes10/14/2003
A en Mic Impedance for Use with Non-Carbon Mic Systems4/15/2002
A en Mic Audio Input from Differential to Single Ended2/26/2004
B en Reduce Drive of Feedback to PLL1/10/2011
A en Transient Protection2/26/2004
A en Remove Capacitor to Eliminate a Rare Failure Mode2/26/2004
en Provide Greater Margin for Overvoltage Protection7/31/1984
C en Inspection of Capacitor C227/11/2003
A en Power Supply Latch-Up and Turn On3/15/2000
en Identify NAV/MKR/GS RF Connectors with Color Code8/12/1987
C en Use of Capacitors with Higher Voltage6/23/2006
C en Replacement of Receiver Capacitors4/20/2004
1 en Provide for DC Sin/Cos Outputs1/31/1986
1 en Improve Glideslope Receiver Rejection Propeller Modulation6/20/1988
en Decrease DME Interference with NAV Receiver2/28/1988
A en Inspection for Proper Soldering of Trimpots4/29/2003
en Increase Glideslope Sensitivity6/20/1988
A en Inspection of Glideslope Cover Screws4/29/2003
en Extends Dynamic Range of AGC6/20/1988
A en Vibration Parameters During Test4/29/2003
en Improve Autopilot LOC Capture Characteristics5/19/1988
B en Switch Transformer Drive Circuitry3/17/2006
C en Switch Transformer Drive Circuitry4/14/2016
A en Improves Intermittent GS3/19/2004
1 en Prevent Spurious Oscillations (Birds)10/2/1989
1 en Prevent Operational Anomoly with Marker Receiver3/19/1990
en Reduce Voltage on ILS Energize Line9/21/1990
1 en Separate Adjustments of VOR/LOC Composite Output10/31/1992
1 en Flag NAV Output with the Loss of 9960 Hz Subcar10/31/1994
en Eliminate Interference from Glideslope Receiver10/31/1994
1 en Flag NAV Output with Loss of 9960 Hz Subcarrier10/31/1994
en Meet Requirements of ICAO Annex 10 for FM Broadcast Interference11/30/1994
B en Enhances Spurious Response Performance Level3/17/2006
A en Cap Array Conformal Coat Process4/26/2013
B en Power Supply Reliability Enhancement4/20/2016
B en Marker Beacon Transistor Replacement12/30/2015
en Conversion/BAE Aircraft Utilizing Smiths EFIS12/6/1990
en Add Ferrite Beads to Meet Eurocae Requirements7/31/1984
en Modification of WCS-300B to Provide Channel Selectable PTT4/21/1989
A en Correct Thumbwheel Assembly Clearance Problem10/1/1997
A en Change Adjustable Resistor from 500 Ohm to 1000 Ohm4/7/2003
Service Information Letters
NameRevisionLangSubjectDate
en The Operation of the FlightLogic Display in Cold Temperatures11/21/2003
B en EFIS Software Version 5.0A Known Anomalies1/4/2005
en EFIS Upgrade Process Issue for EFIS IDU Software Version 5.0A9/22/2004
B en Modification of User Waypoints11/17/2004
A en Shadin ADC-2000 Tray Inspection12/10/2004
B en Shadin ADC-2000 Altitude Readings3/11/2005
A en Using Glideslope Superflag with the AIU2/7/2005
A en Obstruction Database Date5/31/2005
A en Potential Limits Modification when Updating to 5.0B EFIS Software7/7/2005
A en Airworthiness Directive AD 2005-25-08, Shadin ADC-2000 Air Data Computer12/16/2005
A en Correction to EFIS Installation Instructions, Doc. 150-045264, Rev U2/2/2006
Service Instructions
NameRevisionLangSubjectDate
A en Universal MOD Marking Label12/15/2004
B en Universal MOD Marking Label3/23/2015
A en MOD B Installation9/8/2010
A en Allows Installation of Software MOD 0411/4/2005
J en MTM Guard Support5/9/2006
A en Interference with Display and Power Supply11/17/2004
C en Change Clock to 32KHz to Eliminate Interference on 12MHz Channeling4/13/2009
A en 406 Self Test Sensitivity Adjustment9/10/2010
A en 406 Battery Harness Modification9/7/2010
A en G-Switch Replacement10/13/2010
B en Replacement of Rotary Switch12/9/2004
A en Replacement of Rotary Switch12/9/2004
A en Replacement of Rotary Switch12/9/2004
A en Replacement of Rotary Switch12/9/2004
A en Replacement of Rotary Switch12/9/2004
A en Mic Audio Input from Differential to Single Ended5/3/2007
A en Install Diode to Prevent Load Down of TX Interlock Line in the Off State10/26/2007
A en Improvement for Squelch Hysteresis, Fail 2 and Audio Pop6/12/2008
A en Protect P.L.L. from Negative Turn on Transient8/26/2008
A en Improve P.A. Performance and Tuning8/27/2008
A en Install SWID 071/23/2009
A en Improve Bearing Drift8/17/2011
C en Improve Bearing Drift11/2/2011
D en Improve Bearing Drift6/1/2017
A en Improve Mismatch and Radio Sensitivity8/17/2011
A en Replace Receiver Module Vari-Caps C15-20 to Improve Reliability7/25/2006
A en Replace Resistors to Eliminate "Hold 1" Error1/24/2007
B en Allow Free Running ARINC 568 Clock9/26/2007
B en Install SWID 342/19/2009
A en Allows Installation of Software MOD 054/23/2007
A en Add Extended CTCSS Tone Capability3/30/2005
A en Encoder Knob Replacement3/3/2005
A en Terrain Database Update7/16/2004
B en Terrain Database Upgrade 070112/5/2007
A en Rerouting of Wire on Chassis9/27/2004
A en To Reduce Harmonics and Improve the Sensitivity6/28/2004
B en RT-5000-5011 Install Mods 3, 4, & 1012/6/2007
A en RT-5000-0611 Vote Scan and AES Upgrade12/3/2007
B en Installation 150-040879 f Software SWID 177/25/2008
A en To Improve Power Supply Reliability5/22/2008
A en Use of Capacitors with Higher Voltage4/28/2004
A en Improve Receive Audio Response after Transmit12/3/2007
B en To Increase Voltage Rating of Audio Board Capacitor C696/24/2009
A en To Improve the Tuning of the IF Stage3/9/2005
B en Improvement of Insertion Loss of Low Pass Filter10/17/2005
B en Add Protection to the PA During Improper Antenna Load Conditions8/9/2005
A en Improve T/R Switch Reliability and Improve Power Leveling Under VSWR8/25/2005
A en Fix Variations in Audio Output Level11/30/2006
B en Replace Ferrite on B100, B101, and T44/22/2009
B en To Prevent Overmod at Lower Frequencies4/22/2009
A en To Improve the Tuning of the IF Stage3/9/2005
A en Improvement of Insertion Loss of Low Pass Filter11/8/2004
B en Add Protection to the PA During Improper Antenna Load Conditions8/9/2005
A en Improve T/R Switch Reliability and Improve Power Leveling Under VSWR10/17/2005
A en Improvement of Insertion Loss of Low Pass Filter10/17/2005
A en Replace Ferrite on B100, B101 and T44/22/2009
A en To Prevent Overmod at Low Frequencies4/22/2009
B en Modification for Rotor Blade Modulation10/23/2007
C en Modification for Rotor Blade Modulation7/15/2013
B en Improves Drifting of VOR Bearing and Glideslope12/12/2005
B en Corrects No Power Up or High Start Up3/3/2006
A en Improve Glideslope AGC Board Clearance & Reduce Noise6/19/2006
A en Improve GS and LOC Sensitivity By Grounding R31652/7/2007
D en VOR Sensitivity Improvement12/27/2007
A en Replace Richey Cap C3060 to Improve NAV Converter Reliability10/23/2007
Service Notices
NameRevisionLangSubjectDate
A en Test Panel Modification (Bendix/King)8/2/2001
A en Test Panel Modification2/1/2001
A en Inspection Instructions11/30/2011
A en Correct Typo in Dynamic Range Test12/22/2005
A en Fixes Inoperative DCS Tone Feature1/18/1999
A en Fixes Active Antenna Tuning6/25/1999
B en Create Single Zone Codeplug5/5/2008
A en Narrow Band Factory Upgrade5/9/2001
A en KTS Display Indication During Test1/27/2006
A en Test for One Minute Timer that Limits Transmitter Duty Cycle4/11/2002
A en Test for One Minute Timer that Limits Transmitter Duty Cycle4/15/2002
User Guides & Manuals
NameRevisionLangSubjectDate
D en TU-4015/31/2008
C en C-5000 Remote Programmer6/1/2009
D en C-5000 Remote Programmer12/4/2012
C en RMUSIM, DBCU, RT-50006/19/2009
Worksheets
NameRevisionLangSubjectDate
A en AT-434A, C5 Select3/8/2013
A en AT-434A, Preliminary Test3/8/2013
A en AT-434A, Final Test3/8/2013
Miscellaneous
NameRevisionLangSubjectDate
1.00 en Acceptance Test Reports: Test Set5/9/2007
A en Theories of Operation: 300-043522 RT-5000 Motherboard5/17/2012