The Aviation DataBase: Service Information: Collins Aerospace
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Amateur Service Agency Bulletins
NameRevisionLangSubjectDate
en General Information, Amateur Service Agency Bulletins05/11/1960
en Audio Squeal in Transmit when AF Gain Control is Advanced08/01/1960
en Trouble Shooting Aids08/02/1960
en Information08/03/1960
en Service Information12/23/1960
en Service Information05/05/1961
en A. Main Tuning Dial Assembly and Repair B. PTO to Tuning Dial Alignment05/12/1961
en Production Changes02/12/1962
en Information07/03/1962
en A. Bias Diode Change and Capacitor Change B. Bias Voltage Range Increase C. Check Wiring of Fuse F111/16/1962
en Main Tuning Dial Assembly and Associated Parts06/26/1963
revised en Intermittent Dropout of Plate Overload Relay11/20/1963
en Noise Activation of AGC System03/18/1964
en Main Tuning Dial Assembly and Associated Parts05/31/1965
en 1. Cabinet Vibration Elimination 2. Excessive ALC Control07/30/1965
en A. Crystal Calibration B. "Yelp" Problem C. Reduce Low-Frequency Spurious D. High-Frequency Tweets E. Eliminate 0.455-KC Signal Bypassing Transmit Mixer F. Improve Carrier Balance10/12/1965
en 1. 80 Meter Spuriour Reduction 2. Updated Balanced Modulator10/16/1965
Catalogs
NameRevisionLangSubjectDate
en HF Communication Equipment: 1964-1965
Component Maintenance Manuals
NameRevisionLangSubjectDate
6 en Shut-Off Valve Unit P/N B38LCXXXX11/30/2020
Drawings
NameRevisionLangSubjectDate
1 en 651S-1/1A General Purpose HF Receiver04/01/1973
E en Kit Blower AC-280812/03/1982
B en 400B Power-Audio Unit04/09/2034
A en 10-B Crystal Control Unit11/09/2033
Flight Manual Supplements
NameRevisionLangSubjectDate
en Pro Line 21 & FCS-3000 Flight Control System: M7 Aerospace SA227-DC07/27/2007
Information Bulletins
NameRevisionLangSubjectDate
en Installation and Usage of the RTA-41XX NVM Erasure Tool01/22/2019
en 651S-1 General Purpose HF Receiver, CPN 522-4836-002 thru -015, and -019, Subassembly Interchangeability03/01/1972
en 30L-1 Parasitic Oscillation07/07/1970
en 32S-1 Transmitters and Early KWM-2 Transceivers Beginning to Exhibit Various Forms of Instability that Fails to Respond to Usual Corrective Efforts07/27/1971
Instruction Manuals
NameRevisionLangSubjectDate
en 20V-3 AM Broadcast Transmitter
en 21E & 21M Broadcast Transmitters
en 26C Amplifier
en 30 Series Transmitters
en Solid State Tube Replacements for Radio Receivers 75S-1, 75S-3/3A, 75S-3B/C and Radio Transmitters 32S-1, 32S-3
en 30J-18 Radio Transmitter
en 32RA-7 Radio Transmitter
en 30J-18 Radio Transmitter
en 312A-1 Control/Speaker
revised en DL-1 Dummy Load11/01/1966
en 32RA-8 Radio Transmitter
en 51J-4 Communications Receiver09/01/1958
en 20V-2 AM Broadcast Transmitter03/15/1961
revised en 75A-4 Amateur Receiver03/15/1957
en KWS-1 Amateur Transmitter03/01/1956
en 212F-1 Broadcast Console05/15/1956
en Vernier Tuning Knob09/01/1956
en SC-101 Station Control05/01/1957
en 302C-1 and 302C-2 Directional Wattmeter08/01/1957
en 212E-1 Broadcast Console10/15/1961
en KWM-1 Amateur Transceiver11/01/1957
revised en 30K-5 Ground Station Transmitter - 115-Volt and 230-Volt12/01/1956
en 618S-1 & 618S-4 Transceiver10/15/1957
2 en 26U-1 Peak Limiting Amplifier07/01/1958
en 32S-1 Transmitter09/15/1958
en 204F-1 Linear Power Amplifier10/01/1960
en 136C-1 Noise Blanker01/01/1960
en 136A-1 Noise Blanker01/01/1960
en KWM-2 Transceiver12/15/1959
en 353C-14 and 353C-31 Mechanical Filter Plug-In Adapters for 75A-1 Receiver11/17/1953
en 353A-08, 353A-12, 353A-31 and 353A-60 Mechanical Filter Plug-In Adapters in the Hammarlund SP-400 and National HRO-60 Receivers06/15/1955
en 300G AM Broadcast Transmitter
en 12Z Remote Amplifier
en 26W Limiter Amplifier01/01/1953
en 75A-1 Amateur Receiver
en 75A-1 Amateur Receiver10/18/1948
en 20T AM Broadcast Transmitter
en 212Y Broadcast Remote Amplifier07/20/1955
en 30K-2 High Frequency Transmitter
en 310B-1/3 Amateur Exciter06/09/1948
en 32V-1 Amateur Transmitter10/05/1949
en 32V2 Amateur Transmitter08/29/1949
en 20V 500/1000 Watt AM Broadcast Transmitter02/09/1951
en 75A-2 Amateur Receiver09/26/1951
revised en 75A-2 Amateur Receiver06/21/1952
en KW-1 1000 Watt Amateur Transmitter01/23/1952
en 21E and 21M Broadcast Transmitters12/15/1955
en 75A-3 Amateur-Band Receiver02/10/1953
en 75A-3 Amateur-Band Receiver04/15/1954
en Mechanical Filter Conversion Kit in the 75A-2 Receiver03/01/1953
en KWS-1 Transmitter10/15/1958
en 212Z-1 Remote Amplifier06/15/1964
en 356A-1 Preamplifier06/15/1964
en 356B-1 Program/Monitor Amplifier08/15/1964
en 356E-1 Limiter Amplifier09/01/1964
en 180S-1 Antenna Tuner02/01/1962
en 75S-1 Receiver06/15/1961
en 32S-1 Transmitter11/15/1961
en 30S-1 R-F Linear Amplifier03/15/1976
en 30S-1 R-F Linear Amplifier07/01/1964
en 302C-3 Directional Wattmeter01/15/1960
en 136B-2 Noise Blanker11/15/1966
en 32S-1 RTTY Modification06/01/1959
en 75S-1 CQ Filter Installation06/01/1959
en 212G-1 Broadcast Console10/15/1961
en 356Q-1 CUE Amplifier09/15/1961
en 409X-2 Power Supply01/15/1960
en 274K-2 Relay Unit01/15/1960
en 399C-1 External VFO Unit11/01/1959
en PM-2 Lightweight A-C Power Supply06/15/1960
en PM-2 Lightweight AC Power Supply05/01/1963
en PM-2 Lightweight AC Power Supply10/01/1968
en 51S-1/1A/1F/1AF/1B Receiver09/15/1975
en MP-1 Mobile Power Supply01/15/1965
en 180V-2 Antenna Coupler11/15/1961
en 30L-1 R-F Linear Amplifier06/15/1962
en 30L-1 R-F Linear Amplifier02/15/1965
en 30L-1 R-F Linear Amplifier07/15/1966
en 75S-3 and 75S-3A Receivers07/01/1963
en KWM-2 and KWM-2A Transceivers01/15/1978
en KWM-2 and KWM-2A Transceivers03/01/1962
en 312B-4 and 312B-5 Station Controls09/15/1962
en KWM-2 and S-Line Equipment RTTY Operation09/15/1961
en 351R-1/2 Rack Mounts11/15/1961
en 820D-2 1-kW AM Transmitter09/01/1979
en 399B-4 Novice Adapter09/01/1969
en 399B-5 Novice Adapter12/15/1961
en 32S-3 Transmitter05/01/1969
en 62S-1 VHF Converter08/15/1963
en 75S-3B and 75S-3C Receivers11/15/1975
en 55G-1/1F Low-Frequency Tuner10/01/1969
en 651S-1/1A General Purpose HF Receiver10/15/1972
en 516F-2 AC Power Supply07/15/1974
en HF-8040( ) Antenna Coupler
Chg 1 en HF-8040( ) Antenna Coupler11/15/1990
en Power Supply
en CU-380 Antenna Coupler (622-3573-001)08/01/1982
en HF-380 Transceiver08/01/1982
en HF-8064 Preselector06/15/1984
en 32RS-1C Transceiver05/01/1964
revised en KWM-380/HF-380 Transceivers Memory Adapters08/31/1994
en RF6DB-C Magnum Six RF Speech Processor
en R-392/URR Radio Receiver06/29/1954
Kits: Conversion
NameRevisionLangSubjectDate
reprint en 354A-1 Mechanical Filter for use with 51J-2 and 51F-3 Receivers09/26/1962
Kits: Custom
NameRevisionLangSubjectDate
en Shoulder Harness and Inertia Reel Installation11/08/1976
en Goodyear Disc Brake Installation02/10/1975
en Windshield Washer and Wiper Installation04/09/1975
Operation Manuals
NameRevisionLangSubjectDate
en 651S-1/1A General Purpose HF Receiver10/15/1972
Operators Bulletins
NameRevisionLangSubjectDate
en Flight Director Anomaly: Failure to Provide Proper Guidance08/31/2003
en The FMS may Turn in the Wrong Direction after Sequencing a "Climb to" Altitude that was Manually Edited or Temperature Compensated07/14/2017
en CPDLC ATN B1 Dropouts10/27/2023
Owner's Manuals
NameRevisionLangSubjectDate
en KWM-380 Transceiver10/01/1979
en KWM-380 Transceiver01/01/1981
en HF-380 Transceiver04/01/1981
Quality Standards Manuals
NameRevisionLangSubjectDate
en Quality Standards for Assembly05/31/1962
en Quality Standards for Assembly11/15/1993
Service Bulletins: Actuators
NameRevisionLangSubjectDate
en Tail Rotor Actuator (TRA) PN C161223-1 - Input Lever Assembly Installation Conformity Check01/17/2019
Service Bulletins: Airfoils
NameRevisionLangSubjectDate
1 en Ice and Rain Protection - Airfoil - Pneumatic De-Icer04/19/2024
Service Bulletins: Altimeters
NameRevisionLangSubjectDate
en Navigation - ALT-4000 - Power Supply Robustness Improvement10/21/2021
en Navigation - ALT-4000 - Evaluation of Surface Mount Ferrite Bead Used on Power Supply03/05/2021
Service Bulletins: Amplifiers
NameRevisionLangSubjectDate
en 30S Linear Power: Increase Operating Life of PA Tube06/21/1961
revised en 30L R-F Linear: Wiring Change Required Before Conversion from 115 to 230-Volt Operation is Made, Use of 8-Ampere Line Fuses and Correction to Instruction Book Drawings08/21/1967
en 30S Linear Power: Prevent Intermittent Dropout of Plate Overload Relay11/01/1969
en 30L R-F Linear: Linear Amplifier02/20/1962
en 30S Linear Power: Reduce Excessive ALC Control11/01/1969
en 30L R-F Linear: A - To Lower Operating Temperature of PA Tubes; B - To Eliminate Pilot Light Fluctuation with R-F Excitation04/02/1962
en 30L R-F Linear: Operation from 230V AC Power Source11/15/1977
Service Bulletins: Antennas
NameRevisionLangSubjectDate
en HF8040 Coupler: Interlock Switch Shaft Change09/01/1983
Service Bulletins: Controls
NameRevisionLangSubjectDate
en CTL Series: Add Power Supply Protection09/11/1981
en CTL Series: Add Power Supply Protection09/11/1981
en CTL Series: Modification to Reduce Transient Noise on Altitude Encoder Inputs04/05/2001
1 en CTL Series: Modification to Reduce Transient Noise on Altitude Encoder Inputs06/08/2001
Service Bulletins: Converters
NameRevisionLangSubjectDate
revised en 62S VHF: Improvement in Operation of ALC Circuit02/28/1964
Service Bulletins: Displays
NameRevisionLangSubjectDate
1 en AFD-3010 Adaptive Flight: Replace Clamped Feed Choke L601 on Front Control Card A208/02/2000
1 en DU-1000A: Navigation - DU-1000A Display Unit (622-8047-401)07/24/1990
2 en AFD-3010 Adaptive Flight Display: Indicating/Recording System08/30/2002
Service Bulletins: Distance Measuring Equipment
NameRevisionLangSubjectDate
1 en DME700: Navigation - DME-700 Distance Measuring Equipment (622-4540-020, -120)08/30/1991
en DME700: Navigation - DME-700 Distance Measuring Equipment (622-4540-020, -021, -022)11/11/1992
en DME700: Navigation - DME-700 Distance Measuring Equipment (622-4540-120, -121)10/21/1992
Service Bulletins: Flight Guidance
NameRevisionLangSubjectDate
en Auto Flight - FGC-3XXX - Pitch Trim Failure and/or Chatter at Start-Up03/08/2022
Service Bulletins: GPS
NameRevisionLangSubjectDate
en Navigation - GPS-4X00( ) - Software Update for Universal Time Coordinated (UTC) Time Offset and GNSS Position Near 180 Degrees West Longitude (Converts Black Label CPN 822-2189-100 to Black Label CPN 822-2189-101)02/18/2020
1 en Navigation - GPS-4X00( ) - Software Update for Universal Time Coordinated (UTC) Time Offset and GNSS Position Near 180 Degrees West Longitude (Converts Black Label CPN 822-2189-100 to Black Label CPN 822-2189-101)03/06/2020
Service Bulletins: Indicating Units
NameRevisionLangSubjectDate
3 en A300 FQIS: Fuel - Quantity Indicating - Tank Retrofit - Inspection and Re-Routing of Cable for Surge Tank Overflow Sensor in Outer Tank07/20/2015
Service Bulletins: Interface Unit
NameRevisionLangSubjectDate
1 en Airshow 400 Digital: SCSI Cable Insulator Installation08/15/2007
1 en Airshow 400 Digital: Save Main CPU CMOS Setup Settings to Flash Memory06/30/2006
en Airshow 400 Digital Interface Unit - Software Upgrade for Y2K Bios Remediation P/N 920040, 92005X05/21/1999
en Genesys: Data Communication Unit - Software Upgrade for Y2K Bios Remediation P/N 92006X, 92007X, 92009X05/21/1999
Service Bulletins: Kits
NameRevisionLangSubjectDate
revised en AC-3803 Control Interface: Improve RFI Filtering and Ensure Compatibility with CU-380 Coupler07/01/1982
en AC-3801 Noise Blanket: Improve Performance and Add Variable Pulse Width Blanking03/15/1982
Service Bulletins: Landing Gear
NameRevisionLangSubjectDate
en Main Landing Gear Doors - Forward Door Linkage Assembly - Inspection of Possible Discrepant Sleeves02/01/2022
1 en Main Landing Gear Doors - Forward Door Linkage Assembly - Inspection of Possible Discrepant Sleeves06/28/2022
3 en NLG Shock Strut - Pivot Pin Retention - Introduction of a New Pivot Pin Retention Bolt03/26/2021
en Nose Landing Gear - Pivot Pin Retention Mechanism Improvement11/10/2022
en Main Landing Gear - Alternate Extension System - Uplock Release Cable Assembly - Introduction of PN 48503-5 Configuration07/18/2022
Service Bulletins: Power Supplies
NameRevisionLangSubjectDate
en 516E-1 DC: Modification for Use with Positive Ground09/12/1958
en 516E-2 DC: Add Bleeder Resistor to +260-Vde Line to Improve Safety Features of Power Supply02/22/1974
1 en PM-2 AC: Extension of Design Specifications for Input Voltage Limits01/03/1969
en Microtecnica Flap Power Unit: Introduction of a New Pressure Switch - Flap Power Unit - P/N C148656-1 & P/N C148656-206/13/2022
en IEC-3001 IAPS: Indicating & Recording System - IEC-X00X - Replacement of Low Reliability Transistors07/29/2022
1 en IEC-3001 IAPS: Indicating & Recording System - IEC-X00X - Replacement of Low Reliability Transistors03/08/2023
en PWR-3000 and PWR-4000 IAPS: Indicating & Recording System - PWR-X00X - Replacement of Low Reliability Transistors07/29/2022
2 en PWR-3000 and PWR-4000 IAPS: Indicating & Recording System - PWR-X00X - Replacement of Low Reliability Transistors03/22/2023
Service Bulletins: Processor Units
NameRevisionLangSubjectDate
en DPU-85 Display: Navigation - DPU-85N Display Processor Unit (CPN 622-8678-002) - Analog I/O Processor Circuit Card Assembly A7 (CPN 647-7000-004/005) - Enhance Synchro Reference Monitoring (Converts -002 Status to -012 Status)06/06/1991
en MPU-85 Multifunction: Navigation - MPU-85N Multifunction Processor Unit (CPN 622-8679-002) - Analog I/O Processor Circuit Card Assembly A7/A9 (CPN 647-7000-004/005) - Enhance Synchro Reference Monitoring (Converts -002 status to -012 status)06/06/1991
Service Bulletins: Receivers
NameRevisionLangSubjectDate
en 75A-4: A. Improve Noise Limiter Operation; B. Revise Q Multiplier; C. Eliminate Radom Fuse Blowing; D. Keep RF Out of Muting Circuit12/14/1955
en 75A-2 & 75A-3: Modification to Reduce Internal Noise in Receiver and Effectively Improve Signal to Noise Ratio Under Average Operating Conditions01/22/1954
en 51S: Suppression of Unwanted Oscillations in Low Level Audio Output Lines and Allow Use of Wiring Configuration Shown in Figure 1-2.a of Instruction Book02/22/1963
revised en 75S-3B/3C: Improved Performance09/29/1967
revised en 75S-3/3A: Eliminate BFO Parasitic Oscillations03/09/1962
en 75A-1: Instructions for Connecting a Panadaptor to a 75A-1 Receiver11/02/1947
en 75S-3/3A: Minimize Background Hum Level05/10/1962
en 75A-4: "S" Meter Sensitivity Potentiometer and Zero Potentiometer Replacement10/15/1956
en 75A-2 & 75A-3: Suggest Modifications of Receivers, S/N 1300 and Over having Low-Loss Mechanical Filters10/27/1954
1 en 75S-3B/3C: Second Mixer Plate Circuit Improvement08/15/1968
1 en 51S: Amateur Communications Product Management, Cedar Rapids, Iowa 5240606/15/1973
A en 75A-4: "S" Meter Sensitivity Potentiometer and Zero Potentiometer Replacement05/31/1957
en 75A-4: Elimination of RF Pickup while Standby Position09/18/1957
en 75A-1: Muting Receiver for CW Break-In Operation11/04/1947
2 en 75S-3B/3C: Covert 75S-3B to 75S-3C10/15/1975
B en 75A-2 & 75A-3: Modification to 75A-3 Receivers, S/N 1299 and Under Using High-Loss F455B Series Filters and Improve Receivers Performance11/24/1954
revised en 51S: Improve Sensitivity of Lower Bands08/31/1964
en 75A-1: Operation of 75A-1 with Break-In System12/09/1947
en 51S: Addition of Dial Lock Assembly08/09/1965
en 51S: A: Converts 51S-1A/1AF to 51S-1/1F; B: Converts 51S-1/1F to 51S-1A/1AF04/01/1970
en 51S: Provision for High-Speed Receiver Muting and Recovery09/01/1971
en 51S: Reduce 500-kHz Spurious Response01/01/1972
A en 51R VHF: TO-FROM Meter Reversal Due to Failure of AVC Voltage08/29/1950
en 651S HF: Increase Life of Display Tubes02/15/1975
2 en 651S HF: Replacing Display Tubes with LED Plug-In Assemblies04/01/1977
1 en 651S HF: Replacing Non-Procurable Integrated Circuits07/01/1978
en 651S HF: Replace Non-Procurable Parts10/01/1980
en 651S HF: Reduce 100 kHz Sidebands11/01/1980
en 51R VHF: Replacement of 90 and 150 Cycle Localizer Filters09/21/1950
en VIR-32: Ensure Correct Transistor Type in Power Supply04/25/1986
en 651S HF: Prevent Invalid Monitor Responses from HF Receiver05/01/1981
en 51R VHF: Tone Localizer Filter Protection05/07/1952
en 651S HF: Change DCFE Filter Switching Diode11/01/1973
en 651S HF: Frequency Keep-Alive Operation with TCU11/15/1974
en 651S HF: Supply KAV Power to DCFE01/15/1978
Service Bulletins: Software
NameRevisionLangSubjectDate
A en Intellistart+, Smartcycle+, ADAS+ and Trendcheck: 4.0 Processor Software Upgrade04/05/2005
2 en Venue System: v4.2 Software05/01/2013
Service Bulletins: Transceivers
NameRevisionLangSubjectDate
en KWS-1: Prevent Off Frequency Oscillation Appearing on Output04/19/1956
en KWM-380: Product Improvement08/01/1980
en KWM-1: A. Improvement in Calibrator Operation; B. Spurious Outputs of KWM-1; C. Transient in Speaker with Switching from Receiver to Transmit; D. Hum in Speaker when AF Gain Control is Advanced in CW Operation; E. "Tweets" in Audio Output Caused by DC Power Supply09/12/1958
en KWM-380: Improve Transmitter Special Purity08/01/1980
en KWS-1: A. Use of Crystal Microphone with KWS-1; B. Prevent Arcing of Contacts on VOX Relay; C. Heat Reducing Tube Shields01/25/1957
1 en KWM-2/2A: Add VOX Relay Time Constant Control10/01/1960
en KWS-1: A. Improved Spark Suppression of Contacts of VOX Relay K101; B. ALC Modification06/30/1957
en KWM-380: Potential Frequency Warble08/19/1980
reiss en KWM-2/2A: Correlation between Frequencies on Different Bands10/01/1971
en KWS-1: Arching of Plate Transformer T50309/20/1957
en KWM-2/2A: Improvement of ALC Action and Elimination of ALC Overshoot09/02/1960
en KWM-380: Replace Optical Encoder08/15/1980
en KWS-1: A. Type 4X250B Tubes, Variation in Input Capacity; B. Change of F503 and F504 to Slow Blow Type11/15/1957
en KWM-380: Audio and RF Gain Control Taper09/01/1980
reiss en KWM-2/2A: Improve Transmit-Receive Exciter Tuning Coincidence01/03/1961
en KWM-380: Correct Transmit Hum12/15/1980
en KWS-1: A. Failure of L403; B. Improved Filter Chokes, L259 and L260; C. Modification to Eliminate Instability on 80 Meters; D. Modification to Eliminate 100 JC Parasitic Oscillation of Power Amplifier; E. Modification to Eliminate Parasitic Oscillation in First Mixer, V201; F. Replacement of Carrier Level Control, R129; G. Synchronization of PA Roller Coils and Tuning Capacitor02/06/1959
en KWM-2/2A: Eliminate Delay in Operation when Switching from Transmit to Receive Function01/11/1962
1 en KWM-380: Prevent Excessive EMI (RCVR Birdies) and Eliminate Electronic Tuning Backlash08/01/1981
reiss en KWM-2/2A: Replacement Relays K2 and K402/01/1970
en KWM-2/2A: A. Eliminate AGC Overshoot on Noise Pulses & Provide Dual Time-Constant Action; B. Change Source of Delay Bias to AGC Rectifier; C. Add Delay-Decay (Hang) AGC to RF Amplifier09/01/1970
Chg 1 en KWM-380: Product Improvement10/01/1982
2 en KWM-2/2A: Convert KWM-2 to KWM-2A10/15/1975
Chg 1 en KWM-380: Stop PA Oscillations and Adjust Circuit Gain10/01/1982
en KWM-2/2A: Eliminate VHF Parasitic Oscillations in Tone Oscillator, V2B04/15/1974
1 en KWM-380: Extend KWM-380 Frequency Coverage08/15/1981
en KWM-380: Add RCV Audio Low-Pass Filter03/15/1982
en KWM-380: CW Waveshape Improvement10/01/1982
en KWM-380: AGC Time Constant Changes10/01/1982
en KWM-380: Transmit Audio Frequency Response and Mic Carrier Control Noise10/01/1982
en KWM-380: Provide Antenna Static Discharge Path10/01/1982
en KWM-380: Eliminate Frequency Warble and Reduce 500-Hz Sidebands on Injection from Synthesizer10/01/1982
Chg 1 en KWM-380: Make Transceiver Receiver-Exciter Board Compatible with CU-380 Coupler04/15/1983
en KWM-380: Eliminate RF Power Burst when Unkeying Transceiver10/01/1982
Service Bulletins: Transmitters
NameRevisionLangSubjectDate
en CIR-10 Series Emergency Locator: Installation of Alkaline Battery Kit05/01/1980
en 32S-1 & 32S-2: Improve VOX Operation06/30/1959
en 32V: Output Network02/17/1956
en CIR-11 Series Emergency Locator: Installation of Alkaline Battery Kit05/01/1980
revised en 32S-3: Improve VOX Circuit to Eliminate Intermittent Dropout and Improve Operation of First Audio Amplifier10/13/1967
en 32V: Instances in Low Grid Drive when Attempting to Use 148B-106/01/1950
en 32S-1 & 32S-2: Improve Carrier Suppression04/01/1960
en 32S-3: Removal of Audio Distortion09/21/1967
en 32S-3: Convert 32S-3 to 32S-3A06/01/1972
1 en 32S-1 & 32S-2: Add VOX Relay Time Constant Control10/01/1960
A en 32S-3: Improve CW Operation02/20/1962
en TTR-920 TCAS Transmitter-Receiver: Navigation - TTR-920 TCAS Transmitter-Receiver04/04/1991
1 en TTR-920 TCAS Transmitter-Receiver: Navigation - TTR-920 TCAS Transmitter-Receiver05/20/1991
3 en TTR-920 TCAS Transmitter-Receiver: Navigation - TTR-920T CAS Transmitter-Receiver (622-8971-012, -112, -612) - SB 16 - Converts 622-8971-012 to 622-8971-020 or Converts 622-8971-112 to 622-8971-120 or Converts 622-8971-612 to 622-8971-62010/24/1994
en TTR-920 TCAS Transmitter-Receiver: Navigation - TTR-920 TCAS Transmitter-Receiver04/24/1991
1 en TTR-920 TCAS Transmitter-Receiver: Navigation - TTR-920 TCAS Transmitter-Receiver05/20/1991
Service Bulletins: Transponders
NameRevisionLangSubjectDate
2 en TDR-94 ATC/Mode S: Navigation - TDR-94 Transponder (CPN 622-9352-002) & TDR-94D Transponder (CPN 622-9210-002)09/21/1992
en TPR-720 ATC/Mode S: Navigation - TPR-720 ATC/Mode S Transponder (622-7878-020, -021, -120, -121)09/19/1990
en TDR-950: Reply Pulse Spacing10/16/1978
en TDR-94 ATC/Mode S: Navigation - TDR-94 Transponder, TDR-94D Transponder, CPU I/O Circuit Card A502/08/1999
1 en TDR-94 ATC/Mode S: Navigation - TDR-94 Transponder, TDR-94D Transponder, CPU I/O Circuit Card A505/15/2000
1 en TDR-94 ATC/Mode S: Navigation - TDR-94 Transponder, TDR-94D Transponder, CPU I/O Circuit Card A505/02/2001
en TPR-720 ATC/Mode S: Susceptibility to High Mode S Discrete Interrogation Rates04/28/1992
en TDR-94 ATC/Mode S: Navigation - TDR-94 ATC/Mode S Transponder (CPN 622-9352-008/108/308/408) & TDR-94D ATC/Mode S Transponder (CPN 622-9210-008/108/308/408) - CPU I/O Programmed Circuit Card A5 (CPN 653-3674-015/016/017/018/021/022) - Improve Ground to Air Transition Performance09/02/2008
en TDR-94 ATC/Mode S: Navigation - TDR-94 ATC/Mode S Transponder (CPN 622-9352-007/008/207/308/309) & TDR-94D ATC/Mode S Transponder (CPN 622-9210-007/008/207/308/309) - CPU I/O Programmed Circuit Card A5 (CPN 653-3674-003/004/005/006/007/008/009/010/011/012/013/014/015/016/019/020/021/022/023/024) & Video Processor Circuit Card A6 (CPN 687-0726-004/005/006/007) - Ensures Correct EHS Selected Altitude Reporting and Adds Pro Line Fusion Capability09/16/2009
en TDR-94 ATC/Mode S: Navigation - TDR-94 ATC/Mode S Transponder (CPN 622-9352-007/008/108/207/308/309/310/408/409) & TDR-94D ATC/Mode S Transponder (CPN 622-9210-007/008/108/207/308/309/310/408/409) - CPU I/O Programmed Circuit Card A5 (CPN 653-3674-003/004/005/006/007/008/009/010/011/012/013/014/015/016/017/018/019/020/021/022/023/024) & Video Processor Circuit Card A6 (CPN 687-0726-004/005/006/007) - Ensures Correct EHS Selected Altitude Reporting, Adds ADS-B Out Capability and Adds Pro Line Fusion Capability09/16/2009
3 en TDR-94 ATC/Mode S: Navigation - TDR-94 ATC/Mode S Transponder (CPN 622-9352-007/008/207/308/309) & TDR-94D ATC/Mode S Transponder (CPN 622-9210-007/008/207/308/309) - CPU I/O Programmed Circuit Card A5 (CPN 653-3674-003/004/005/006/007/008/009/010/011/012/013/014/015/016/019/020/021/022) & Video Processor Circuit Card A6 (CPN 687-0726-004/005/006/007) - Addition of ADS-B Capability12/05/2011
Service Bulletins: Tuners
NameRevisionLangSubjectDate
1 en 55G Low-Frequency: Increase Current Handling Capability of 115-Volt Input Fuse07/25/1969
Service Concession Requests
NameRevisionLangSubjectDate
H en Stabilizer Brace Assembly08/20/2018
Service Information Letters: Actuators
NameRevisionLangSubjectDate
en Flight Controls - Trimmable Horizontal Stabilizer Actuator (THSA) - Incorrect Time/Cycles Since New in Authorized Release Certificate08/06/2024
Service Information Letters: All
NameRevisionLangSubjectDate
en What's Watt with SSB02/15/1960
Service Information Letters: Amplifier
NameRevisionLangSubjectDate
en 30S-1: Loading of 30S-1 Amplifier10/14/1959
Service Information Letters: Flight Display
NameRevisionLangSubjectDate
2 en FDSA-6500 Flight Display Software Application: Display TCAS Fly-to Cue Update - Software Download Instructions06/12/2019
Service Information Letters: Flight Management Systems
NameRevisionLangSubjectDate
1 en FMC-3000, FMC-4200, FMC-5000 & FMC-6000: Instructions for AFM Limitations for Altitude Edits on Specific Pro Line 4 and Pro Line 21 Flight Management Systems02/05/2019
Service Information Letters: GPS
NameRevisionLangSubjectDate
1 en GPS-4000S: No Support to Perform Localizer Performance with Vertical (LPV) and Required Navigation Performance (RNP) Less than 0.3 Nautical Mile Approaches Over Alaska01/27/2020
2 en GPS-4000S: No Support to Perform Localizer Performance with Vertical (LPV) and Required Navigation Performance (RNP) Less than 0.3 Nautical Mile Approaches Over Alaska03/25/2020
Service Information Letters: Interface Unit
NameRevisionLangSubjectDate
en RIU-4000 Radio: SITA Datalink Frequency Change for North America08/04/2016
en Airshow 400 Digital: Mod B and New Operating Software02/16/2006
Service Information Letters: Life Rafts
NameRevisionLangSubjectDate
en 46FASA, 46FAUL & 57FASA: WINSLOW Life Rafts Experiencing a Slight Dimensional Deformation01/18/2006
Service Information Letters: Power Supplies
NameRevisionLangSubjectDate
en 516F-2 AC: Prevent Fuse Blowing Caused by Arcing in Vacuum Tube Rectifiers08/27/1976
Service Information Letters: Receivers
NameRevisionLangSubjectDate
en 75S: VFO Oscillator Drift02/03/1960
en 75S: Extended Operating Range10/15/1975
en 51S-1: Reduced Hum in Audio Output with Use of 28-Volt DC Power Supply05/14/1963
en XMWR-1000 XM Weather: Function of Reset Override Mode Switch on XM Weather Receiver for Proline 21/Proline Fusion06/08/2016
Service Information Letters: Servos
NameRevisionLangSubjectDate
1 en SVO-85B/85C: Lubrication Procedure04/05/2002
Service Information Letters: Software
NameRevisionLangSubjectDate
10 en TSSA-4100 Field Loadable Software07/10/2017
9 en TSSA-4100 Field Loadable Software03/31/2017
Service Information Letters: Strapping Units
NameRevisionLangSubjectDate
en CSU-3100, CSU-4000 & CSU-4100: Instructions for Disabling of Automatic Temperature Compensation Option in Pro Line 4 and Pro Line 21 System06/27/2018
Service Information Letters: Transceiver
NameRevisionLangSubjectDate
en KWM-2: VFO Oscillator Drift02/03/1960
en KWM-2: Overcome Instability Caused by Aging10/15/1975
en HF-380: Provide Mute Function for External Receiver03/01/1981
en KWM-380: Provide Mute Function for External Receiver03/01/1981
en HF-380: Product Improvement
en KWM-380: Product Improvement
en KWM-380: Product Improvement - Receiver-Exciter Circuit Card (638-6908-002)
en HF-380: Product Improvement - Receiver-Exciter Circuit Card (638-6908-002)
en KWM-2: Extended Operating Range10/15/1975
en HF-380: Connections to S-Line Phone Patches08/01/1981
en KWM-380: Connections to S-Line Phone Patches08/01/1981
en HF-380: Product Improvement - Receiver-Exciter Circuit Card A3 (638-6908-002)
en KWM-380: Product Improvement - Receiver-Exciter Circuit Card A3 (638-6908-002)
en HF-380: Product Improvement
en KWM-380: Product Improvement
en HF-380: Product Improvement - Power Amplifier/Heat Sink Assembly A1 (634-8481-003) and Power Amplifier Circuit Card Assembly A1A1 (638-6775-001)
en KWM-380: Product Improvement - Power Amplifier/Heat Sink Assembly A1 (634-8481-003) and Power Amplifier Circuit Card Assembly A1A1 (638-6775-001)
Service Information Letters: Transmitters
NameRevisionLangSubjectDate
en 32S-1: VFO Oscillator Drift02/03/1960
en 32S-1: CW Excitor for an AM Transmitter07/28/1959
en 32S-1: Overcome Instability Caused by Aging10/15/1975
en 32S-1: Extended Operating Range10/15/1975
Service Information Letters: Transponders
NameRevisionLangSubjectDate
en 621A-3 Transponder (522-2703-XXX) - 621A-3 Transponder Overhaul Manual Test Equipment - Modification Recommendation05/25/2000
1 en TDR-94 ATC/Mode S Transponder (622-9352-008/108/308/408) & TDR-94D ATC/Mode S Transponder (622-9210-008/108/308/408) - Mode-S Only All-Call Reply Inhibition09/27/2007
en TPR-720 ATC/Mode S: ATC/Mode S Transponder (CPN 622-7878-001/020/120/200/201/301/440/460/480/901) & TPR-900 ATC/Mode S Transponder (CPN 822-0336-001/020/220/440/460/480/902) - Maintenance Requirement for Proper Operation of TPR-720 and TPR-900 Transponders03/26/2013
1 en TPR-720 ATC/Mode S: ATC/Mode S Transponder (CPN 622-7878-001/020/120/200/201/301/440/460/480/901) & TPR-900 ATC/Mode S Transponder (CPN 822-0336-001/020/220/440/460/480/902) - Maintenance Requirement for Proper Operation of TPR-720 and TPR-900 Transponders10/24/2013
Service Information Letters: Zonal Dryers
NameRevisionLangSubjectDate
en Zonal Dryer P/N 3000-002 Regeneration Air Temperature06/05/2005
Technical Manuals
NameRevisionLangSubjectDate
Chg 101 en 618S-1 and 618S-1A Radio Set10/05/1971
en KWM-2A Transceiver, 30L-1 RF Linear Power Amplifier, 30S-1 RF Linear Power Amplifier and Accessory Equipment04/01/1964
Technical Reports
NameRevisionLangSubjectDate
en Simplified Design Procedure for Electrical Bandpass Filters02/01/1963
Training Manuals
NameRevisionLangSubjectDate
en Radio Transmitting Sets: AN/ART-13A, AN/ART-13, Navy ATC, Navy ATC-111/30/1948
Transmitter Results
NameRevisionLangSubjectDate
en
en
en
en
en
en
Miscellaneous
NameRevisionLangSubjectDate
en Descriptive Specifications: Communications Systems Employing KWT-6 Components11/10/1962
en Engineering Bill of Material List: 305-106/10/1963
Iss 4 en Collins Collector's Quarterly Magazine
en Tubes and Substitutes
12 en Production Test Procedure: PM-2, PP-3990/RFC-93, PP-4151/RFC-92 & 516F-2 AC Power Supplies09/09/1974
en Service Bulletin List: 651S General Purpose HF Receiver
en Self-Study Training Course: KWM-380 Transceiver05/01/1980
en Technical Data Sheet: 75A-4 Receiver Modifications and Production Changes A97-001
en Vertical Scale Indicators - Reliabilty Analysis and Product Improvement: Report to Operators10/24/1975
en Voltage Tables: S-Line 32S-3 Transmitter Service Voltages