JASC 3452

Service difficulty reports · 624

Reports filed under 3452 · ATC Transponder System, newest first.

Query with SQL
duckdb -csv -c "SELECT sdr_id, difficulty_date, n_number, aircraft_make, aircraft_model, part_name, part_condition, jasc_code, discrepancy
  FROM 'https://openairdocs.org/data/latest/faa_service_difficulty_report.parquet'
  WHERE jasc_code = '3452'
  ORDER BY difficulty_date DESC"

Prints the whole list as CSV. It reads the release’s Parquet files over HTTPS, so there’s nothing to download first. Install DuckDB to run it.

SDR HEEA0010991Transceiver · defective3RD DIGIT OFF WITH "1" SELECTED. ATC SHOWS "5". PERFORMED PRELIMINARY INSPECTION, COULD NOT DUPLICATE PROBLEM. FOUND UNIT STAYS "ON" IN "OFF" FUNCTION. TROUBLESHOT AND FOUND Q2 TRANSISTOR BAD. SENT TO ALLIED SIGNAL AVIONICS FOR INSPECTION AND REPAIR.Sep 10, 1997 · N4282Z · Bell 206L3SDR HEEA0010989Transceiver · failedAFTER UNIT HEATS UP, RECEIVER SENSE DECREASES. PERFORMED PRELIMINARY INSPECTION, FOUND AFTER UNIT HEATS UP AND IS TURNED OFF AND BACK ON UNIT RECEIVER BUT NO TRANSMIT. TROUBLESHOT AND REPLACED TRANSISTOR Q417, Q418, Q419, REPLACED R472 VARIABLE RESISTOR, REPASep 10, 1997 · N2277A · Bell 206B3SDR HEEA0010627Transceiver · failedATC TRANSPONDER DOES NOT TRANSMIT. RECEIVED NEW 6-97.Aug 12, 1997 · N513EH · Bell 206L1SDR RAIA970702Transponder · inoperativeSTL - FLT 7138 - ATC REPORTED BOTH TRANSPONDERS INOPERATIVE. NR 1 SYSTEM TESTED NORMAL. REMOVED AND REPLACED NR 2 TRANSPONDER. (X)Jul 1, 1997 · N425TE · Aerosp ATR42300SDR HEEA0010279Transceiver · failedTOWER NOT RECEIVING TRANSPONDER. PERFORMED PRELIMINARY INSPECTION AND FOUND FREQ UENCY OUT OF SPECS AND IN NEED OF MOD 9.Jun 25, 1997 · N57416 · Bell 407SDR HEEA0010277Transceiver · failedTRANSPONDER WILL NOT SQUAK IDENT 6033. PERFORMED PRELIMINARY INSPECTION. FOUND UNIT NOT RECEIVING AT ALL. REPLACED V101 CAVITY TUBE P/N C2080A. REPAIRED, ADJUSTED POWER OUT, PULSE WIDTH AND FREQUENCY. BENCH CHECK GOOD.Jun 25, 1997 · N3207Q · Bell 206L3SDR HEEA0010276Transceiver · inoperativeMODE "C" INOPERATIVE. PERFORMED PRELIMINARY INSPECTION, TESTED, ADJUSTED PULSE WIDTH AND FREQUENCY. REPLACED MISSING PHOTOCELL LENS P/N 088-00655-0000. BENCH CHECK GOOD.Jun 25, 1997 · N2269A · Bell 206BSDR HEEA0010275Transceiver · intermittentTRANSPONDER INTERMITTENT CONDITION. PERFORMED PRELIMINARY INSPECTION. PULSES INCORRECT AND OFF FREQUENCY. REPLACED F401 FUSE, V101 CAVITY OSCILLATOR, C4042 CAPACITOR, C409 CAPACITOR. REPAIRED. ADJUSTED FREQUENCY, POWER AND PULSE WIDTH. BENCH CHECK GOOD.Jun 25, 1997 · N911PF · Bolkms BO105SSDR HEEA0010274Transceiver · failedTRANSPONDER NOT RESPONDING. FOUND DISTORTED TRANSMIT PULSE. REPLACED DEFECTIVE V101 CAVITY OSCILLATOR, DETERIORATED R477 RESISTOR AND WEAK V301 PHOTODETECTOR. ADJUSTED AND BENCH CHECK GOOD.Jun 25, 1997 · N8587X · Bell 206L3SDR HEEA0010270Transceiver · failedNO SIGNAL OUTPUT. REPLACED DEFECTIVE V101 CAVITY OSCILLATOR. ADJUSTED POWER OUT AND FREQUENCY AS NEEDED. INSPECTED AND BENCH CHECK GOOD.Jun 25, 1997 · N7170D · Bolkms BO105SSDR HEEA0010269Transceiver · inoperativeINOPERATIVE. WILL NOT EVEN TEST. PERFORMED PRELIMINARY INSPECTION. FOUND UNIT NOT POWERING UP. CHECKED FUSE F401. CHECKED GOOD. FOUND S302 ON/OFF SWITCH NOT MAKING CONTACT. CLEANED S302 SWITCH. REPAIRED. ALSO REPLACED BAD PHOTOCELL V301. REPAIRED. BEJun 25, 1997 · N2268V · Bell 206BSDR 97ZZZX3578Transponder · inoperativeTRANSPONDER UNIT INOPERATIVE WHEN INSTALLED. REMOVED AND REPLACED.Jun 25, 1997SDR SRAA970607Atc Transponder · inoperativeAFTER TAKEOFF, ATC TRANSPONDER WENT INOP. ACCOMPLISHED AIR TURNBACK TO CHS WITHOUT INCIDENT. REPLACED TRANSPONDER, SYSTEM OPS CHECKED GOOD PER MM 34.Jun 13, 1997 · N920SJ · Lkheed 382GSDR SWIA97987Antenna · corrodedREMOVE NR 2 TRANSPONDER ANTENNA DUE TO CORROSION. REMOVED AND REPLACED NR 2 TRANSPONDER ANTENNA, OPS CHECKS GOOD.Jun 9, 1997 · N212SW · Emb EMB120ERSDR 97ZZZX3564Transponder · malfunctionCONTROL PANEL WILL NOT SQUAWK 1200 WHEN TURNED TO VFR POSITION.Jun 4, 1997 · N4UV · Bell 230SDR 97ZZZX2388Transponder · shortedBOTH TRANSPONDERS FAILED.May 12, 1997 · N847CA · Beech 1900DSDR 97ZZZM677Control Knob · strippedTRANSPONDERS INOPERATIVE.May 8, 1997 · N840CA · Beech 1900DSDR HAIHEEA9763Transponder · inoperativePILOT REPORTED TRANSPONDER NOT WORKING PROPERLY.Apr 30, 1997 · N31217 · Skrsky S76ASDR HAIHEEA9750Pulse Oscillato · defectiveCATHODE PULSE OSCILLATOR CAUSES TRANSPONDER UNIT (KT76A) TO DRAW MORE CURRENT THAN NORMAL.Apr 30, 1997SDR HAIHEEA9661Transponder · failedPILOT TRANSPONDER NOT WORKING PROPERLY, DRAWS EXCESSIVE CURRENT.Apr 29, 1997 · N3526T · Bolkms BO105SSDR HAIHEEA9477Transceiver · failedREPLY LIGHT WOULD NOT OPERATE. PERFORMED PRELIMINARY INSPECTION, FOUND REPLY LIGHT INOPERATIVE. REPLACED PHOTOCELL V301. REPAIRED. ALSO REPLACED DETERIORATED RESISTOR (R477). ADJUSTED PULSE WIDTH AND FREQUENCY, CLEANED WAFERS, PLACED IN FREEZER, HEATED ANDApr 23, 1997 · N50293 · Bolkms BO105SSDR HAIHEEA9375Transceiver · defectiveTRANSPONDER IDENT LIGHT DOES NOT ILLUMINATE. PERFORMED MOD 6 INSTALLING HEAT SINK ON Q415 TRANSISTOR AND REPLACED RM401 AND RM402 RESISTOR NETWORK TO COMPLY WITH MOD 7. ADJUSTED FREQUENCY. BENCH CHECK GOOD.Apr 16, 1997 · N2772A · Bell 206L1SDR HAIHEEA9360Transceiver · knob brokenTRANSCEIVER 4TH DIGIT KNOB BROKEN OFF. PERFORMED PRELIMINARY INSPECTION AND FOUND 4TH DIGIT KNOB BROKEN OFF. REPLACED FACEPLATE ASSY, REPAIRED, ALSO FOUND V301 PHOTOCELL INOPERATIVE. REPLACED V301 PHOTOCELL. REPAIRED. BENCH CHECK GOOD.Apr 15, 1997 · N31077 · Bell 206L3SDR HAIHEEA9356Transceiver · defectiveTOWER CANNOT PICK UP SIGNAL, WORKS INTERMITTENTLY. PERFORMED PRELIMINARY INSPECTION, VERIFIED VERY WEAK TRANSMIT POWER. TROUBLESHOT AND REPLACED V101 CAVITY OSCILLATOR, ADJUSTED, REPAIRED TRANSMIT POWER. LET UNIT HEAT AND BENCH GOOD.Apr 15, 1997 · N2253E · Bell 206L1SDR HAIHEEA9350Control · inoperativeXPONDER CONTROL INOPERATIVE; SMOKED.Apr 15, 1997 · N107X · Bell 412SDR HAIHEEA9346Transceiver · defectiveREPLY LIGHT STAYS DIM. REPLACED V301 PHOTODETECTOR. REPAIRED. BENCH CHECK GOOD.Apr 15, 1997 · N6095S · Snias AS350B2SDR HAIHEEA9326Transceiver · failedDOES NOT REPORT PER TOWER. PERFORMED PRELIMINARY INSPECTION. FOUND RECEIVED WEAK, SWAPPED MICRO-PROCESSOR AND MIXER DIODE. NO HELP. TROUBLESHOT FURTHER, FOUND PROBLEM TO BE IN LOCAL OSC, FOUND WHEN COVER TO LOCAL OSC IS PUT ON UNIT, RECEIVER DROPS OFF, WHENApr 15, 1997 · N7170D · Bolkms BO105SSDR HAIHEEA9325Transceiver · failedNO ALTITUDE REPORTING. PERFORMED PRELIMINARY INSPECTION. FOUND MAX POWER OUT TO BE 10 WATTS. REPLACED CAVITY OSCILLATOR V101. REPAIRED. ADJUSTED FREQUENCY. REPLACED DETERIORATED RESISTOR R477. COOKED UNDER HEAT LAMP, VIBRATED, AND PUT IN FREEZER. BENCH Apr 15, 1997 · N3892R · Bell 206L1SDR HAIHEEA9288Transponder · failedUNIT DRAWS EXCESSIVE CURRENT. TRANSPONDER NOT WORKING.Mar 31, 1997 · N3526T · Bolkms BO105SSDR HAIHEEA9287Transponder · inoperativeTRANSPONDER COMPLETELY DEAD.Mar 31, 1997 · N221PH · Rkwell NA26580SDR HAIHEEA9286Transponder · defectiveIDENT FUNCTION INOPERATIVE.Mar 31, 1997 · N31217 · Skrsky S76ASDR HAIHEEA9285Transponder · corrodedTRANSPONDER HAS CORROSION IN UNIT. PERFORMED PRELIMINARY INSPECTION AND CLEANED EXCESSIVE CORROSION ON CHASSIS. REPLACED BUSHING AND INSULATOR FOR TRANSISTOR Q104 DUE TO CORROSION. FOUND UNIT WENT OFF LINE. FOUND UNIT TO BE STAYING IN TEST MODE. REPLACED Mar 31, 1997 · Bell 412SDR HAIHEEA9283Transceiver · defectiveREPORTED INOPERATIVE BY ATC, FOUND WEAK OUTPUT BY ATC600. PERFORMED PRELIMINARY INSPECTION, FOUND C403 CAPACITOR BLOWN. REPLACED C403. REPAIRED. TESTED AND FOUND UNIT RECEIVING BUT NOT TRANSMITTING. REPLACED V101 CAVITY OSCILLATOR. REPAIRED. ALSO REPLACEMar 31, 1997 · N5014Y · Bell 206L1SDR P5CA9700449Antenna · crackedSMALL ANTENNA BL O BETWEEN ANTI COLLISION LIGHT AND VHF ANTENNA BENT AND CRACKED. REMOVED AND REPLACED MODE S, ANTENNA IAW MM 34-53-01.Mar 24, 1997 · N859FT · Boeing 747123SDR HEEA979185Transceiver · failedFAILS TO IDENT. FOUND UNIT NOT RECEIVING OR TRANSMITTING. FOUND -6.2V LINE BAD. FOUND LEGS OF TRANSISTOR Q402 BROKEN WHEN REMOVING FOR CHECKING. REPLACED TRANSISTOR Q402. UNIT STILL NOT TRANSMITTING AND DRAWS MORE CURRENT THAN NORMAL. REPLACED CAVITY OSCILMar 12, 1997 · N129MR · Bell 206L3SDR HEEA979184Transceiver, · intermittentPILOT REPORTED IT WORKED INTERMITTENTLY. FOUND FREQUENCY OUT OF SPECS. ADJUSTED TO SPECS. WHEN UNIT WAS HEATED, FREQUENCY WENT OUT OF TOLERANCE AGAIN. REPLACED CAVITY OSCILLATOR V101. REPAIRED PROBLEM. COOKED UNER HEAT LAMP, VIBRATED AND PUT IN FREEZER. Mar 12, 1997 · N4180F · Bell 206L3SDR HEEA979166Transceiver · defectiveTRANSCEIVER WEAK SENSITIVITY. PERFORMED PRELIMINARY INSPECTION. REPLACED MIXER DIODE CR202. REPAIRED PROBLEM. ADJUSTED FREQUENCY AND PULSE WIDTH. COOKED UNDER HEAT LAMP, VIBRATED AND PUT IN FREEZER. BENCH CHECK GOOD.Mar 12, 1997SDR C2XA97CL020Transponder · inoperativeCLE - FLT 3058 - CREW REPORTED, THAT THE NR 2 TRANSPONDER WAS INOPERATIVE, WITH NO FUNCTION OPERATING AT ALL. AIRCRAFT RETURNED TO FIELD. MAINTENANCE INSPECTED THE AIRCRAFT THEN REMOVED AND REPLACED THE NR 2 TRANSPONDER, ALL OPERATIONAL CHECKS WERE SATISFACTMar 4, 1997 · N27707 · Emb EMB120RTSDR HEEA979097Control Display · inoperativeTRANSPONDER IDENT BUTTON INOPERATIVE, DISPLAY UNCLEAR. PERFORMED PRELIMINARY INSPECTION. REPLACED PHOTOCELL V101 AND IDENT BUTTON S103 AND DISPLAY LENS. REPAIRED. BENCH CHECK GOOD.Feb 11, 1997 · Bell 412SDR HEEA979078Transponder · weakTRANSPONDER OUTPUT WEAK; INOPERATIVE. REPLACED WEAK V101 CAVITY OSCILLATOR AND WEAK V301 PHOTODETECTOR THAT WAS CAUSING WEAK REPLY. BENCH CHECK GOOD.Feb 11, 1997 · N2268A · Bell 206B3SDR HEEA979064Transponder · failedTRANSPONDER NOT RECEIVED BY GROUND RADAR. PERFORMED PRELIMINARY INSPECTION. FOUND V101 TO HAVE LOW POWER OUT, ADJUSTED V101. NO HELP. REPLACED V101 P/N C2080A. REPAIRED. BENCH CHECK GOOD.Feb 11, 1997 · N39122 · Bell 206B3SDR HEEA979063Transponder · inoperativeTRANSPONDER MODE C INOPERATIVE. PERFORMED PRELIMINARY INSPECTION. FOUND POWER OUT LOW, ADJUSTED V101. NO HELP. REPLACED V101 CAVITY TUBE P/N C2080A. REPAIRED. BENCH CHECK GOOD.Feb 11, 1997 · N2269A · Bell 206BSDR HEEA979042Transponder · failedTOWER REPORTS TRANSPONDER INOPERATIVE. LIGHT NOT FLASHING, NO PRIMARY OR MODE C. REPLACED DEFECTIVE MIXER DIODE CR202. REPOSITIONED COMPONENTS IN OSCILLATOR FOR GOOD SENSITIVITY AT TURN ON. UNIT BENCH CHECK GOOD.Feb 11, 1997 · N137AE · Bolkms BO105SSDR HEEA979040Transponder · failedTRANSPONDER WILL NOT REPLY. REPLACED DEFECTIVE V101 CAVITY OSCILLATOR. REPAIRED UNIT. BENCH CHECK GOOD.Feb 11, 1997 · N81992 · Bolkms BO105SSDR HEEA979033Transponder · malfunctionREPORTED AS WEAK AND INTERMITTENT. FOUND POWER OUT LOW, PHOTOCELL BAD AND R477 RESISTOR DETERIORATED. REPLACED V101 CAVITY OSC., V301 PHOTOCELL, R477 RESISTOR. REPAIRED. ALSO REPLACED MISSING PHOTOCELL LENS. REPAIRED. BENCH CHECK GOOD.Feb 10, 1997 · N27702 · Bell 206L1SDR HEEA979032Transponder · failedTRANSPONDER WILL NOT REPORT. REPLACED CAVITY OSCILLATOR V101. REPAIRED. ADJUSTED FREQUENCY, COOKED UNIT, VIBRATED AND PUT IN FREEZER. BENCH CHECK GOOD.Feb 10, 1997 · N4180F · Bell 206L3SDR HEEA979031Transponder · knob brokenTRANSPONDER KNOB BROKEN OFF. PERFORMED PRELIMINARY INSPECTION. REPLACED KNOB. REPAIRED. REPLACED BLOWN FUSE F401 AND CAVITY TUBE V101 DUE TO LOW POWER OUT. ADJUSTED FREQUENCY, COOKED UNIT, VIBRATED AND PUT IN FREEZER. BENCH CHECK GOOD.Feb 10, 1997 · N2764F · Bell 206L1SDR HEEA979029Transponder · defectiveINTERMITTENT OPERATION IN FLIGHT. PERFORMED PRELIMINARY INSPECTION. TROUBLESHOT AND REPLACED SWITCH BOARD ASSY P/N 200-0381-01. REPAIRED. BENCH CHECK GOOD.Feb 10, 1997 · N911EB · Bolkms BO105SSDR HEEA979021Transceiver · knob brokenKNOB BROKEN OFF. REPLACED BROKEN KNOB. UNIT HAD LOW POWER OUT. REPLACED DEFECTIVE V101 CAVITY OSCILLATOR. ADJUSTED PULSE, FREQUENCY AND POWER OUT. BENCH CHECK GOOD.Feb 10, 1997 · N5745S · Bell 206L1SDR HEEA979019Control Display · faultyDIMMING CONTROL NOT WORKING, STAYS BRIGHT. REPLACED V101 PHOTOCELL AND S103 IDT SWITCH. REPAIRED. TESTED. CHECKED 28V LIGHTING. BENCH CHECK GOOD.Feb 10, 1997 · N911NC · Bolkms BK117A3
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