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.
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
Run it at the DuckDB prompt, or in any tool that reads Parquet over HTTPS. More ways to query the release are on Use the data.
SDR AU960704Transponder · faulty(AUS) TRANSPONDER FAILED TO OPERATE DUE TO A FAULTY CAVITY BAND PASS FILTER IN THE RECEIVERSDR 96ZZZX3005Resistor · defectiveSUBMITTER NOTED SEVERAL INSTANCES OF DEFECTIVE HIGH VOLTAGE BLEEDER RESISTORS IN THE KT-76A, ESPECIALLY THE HIGHER SERIAL NUMBER UNITS. FOUND THE FIRST ONE THE HARD WAY, ZAPPED WHILE PUTTING UNIT TOGETHER. THIS DOES NOT POSE A FLIGHT HAZARD, BUT CAN BE DANGESDR HEEA967104Transponder · inoperativeTRANSPONDER INOPERATIVE WILL NOT COME ON LINE.SDR HEEA967103Control · defectiveCONTROL UNIT HAS BAD DISPLAY AND NEEDS MOD #2.SDR HEEA967102Control · defectiveXPONDER IDENT SWITCH STICKING IN IDENT POSITION.SDR HEEA967019Transceiver · defectiveTOWER REPORTED TRANSPONDER INOPERATIVE. REPLACED CAVITY OSCILLATOR V101 AND FUSE F401. UNIT QUIT BLOWING FUSES; BUT DOES NOT RECEIVE.SDR HEEA966923Transceiver · defectiveCODE SET KNOB MISSING. REPLACED FACEPLATE ASSEMBLY. REPAIRED. REPLACED PHOTOCELL V301 DUE TO WEAK REPLY LIGHT. REPAIRED. BENCH CHECK GOOD.SDR HEEA966922Transceiver · defectiveREPLY LIGHT DOES NOT COME ON AND TEST LIGHT WILL NOT ILLUMINATE. REPLACED SWITCH BOARD AND FUSE F401. REPAIRED. REPLACED PHOTOCELL V301 DUE TO WEAK REPLY LIGHT. REPAIRED. REPLACED DETERIORATED RESISTOR R477. INSTALLED HEATSINK BEHIND TRANSISTOR Q415. FOUNSDR HEEA966921Transceiver · failedTRANSPONDER SYSTEM DOES NOT FUNCTION. ALSO TRANSPONDER WILL NOT TEST. FOUND UNIT TO HAVE LOW POWER OUT. ADJUSTED CAVITY TUBE. REPLACED CAVITY TUBE (V101) P/N C2080A. REPAIRED LOW POWER OUT. TESTED UNIT AND FOUND RECEIVER WEAK. ALIGNED RECEIVER. REPLACESDR HEEA966892Transceiver · defectiveTOWER REPORTS UNIT INTERMITTENT. REPLACED INOPERATIVE CR202 MIXER DIODE. ALSO REPLACED FACEPLATE ASSEMBLY DUE TO BROKEN KNOB. REPLACED DETERIORATED R477 RESISTOR. REPLACED WEAK V301 PHOTODETECTOR. ADJUSTED FREQUENCY AND PULSE AND ADJUSTED FOR BEST SLS LEVESDR HEEA966891Control Display · defectiveLIGHTS TOO DIM. REPLACED PHOTOCELL V101 P/N 134-5005-02. REPAIRED. CLEANED AND TESTED UNIT. TOUCHED UP FACEPLATE. BENCH CHECK GOOD.SDR HEEA966876Transceiver · defectiveTOWER REPORTED UNABLE TO PICKUP TRANSPONDER SIGNAL. COULD NOT DUPLICATE PROBLEM. INSPECTED UNIT AND FOUND FACEPLATE CRACKED AND PHOTOCELL NOT WORKING. REPLACED FACEPLATE P/N 200-02020-0001 AND PHOTOCELL V301 P/N 134-05005-0002. TESTED UNIT. ADJUSTED PULSE SDR HEEA966874Control Display · defectiveTOO DIM. ADJUSTED INTENSITY BRIGHTER. REPAIRED. REPLACED MISSING RING RETAINER AT END OF SHAFT. REPLACED FADED LENS. BENCH CHECK GOOD.SDR HEEA966869Transponder · defectiveWEAK RECEIVER AND NO POWER OUT. SENT TO COLLINS AVIONICS FOR INSPECTION AND REPAIR.SDR 96ZZZM828Atc Transponder · inoperativeFLT 471 - IAD-MSY - DIVERTED TO ATL, BOTH ATC TRANSPONDERS BECAME INOP. REMOVED AND REPLACED NR 1 ALTIMETER AND REPAIRED BROKEN WIRE ON NR 2 TRANSPONDER. ASSIGNED MEL TO NR 1 TRANSPONDER READING LOW.SDR HEEA966731Transceiver · defectiveATC NOT RECEIVING CODE 0461. VERIFIED UNIT HAD NO POWER OUT. REPLACED V101 P/N C2080A. REPAIRED. ADJUSTED POWER AND FREQUENCY. BENCH CHECK GOOD.SDR HEEA966728Transceiver · weakTRANSMITS WEAK. REPLACED WEAK V101 CAVITY OSCILLATOR. ALSO REPLACED WEAK V301 PHOTODETECTOR. ADJUSTED FREQUENCY AND BENCH CHECK GOOD.SDR HEEA966727Transceiver · defectiveTRANSCEIVER OFF FREQUENCY. REPLACED DEFECTIVE V101 CAVITY OSCILLATOR. ALSO REPLACED DETERIORATED R477 RESISTOR AND REPLACED WEAK V301 PHOTOCELL. ADJUSTED AND BENCH CHECK GOOD.SDR HEEA966685Transceiver · defective2 YEAR INSPECTION DUE. REPLACED WEAK V101 CAVITY OSCILLATOR, WEAK V301 PHOTO DETECTOR AND DETERIORATED R477 RESISTOR. ADJUSTED AND BENCH CHECK GOOD.SDR HEEA966684Transceiver · defectiveFIRST DIGIT KNOB BROKEN. REPLACED KNOB. ALSO REPLACED V101 CAVITY THAT WAS WEAK. INSPECTED AND UNIT BENCH CHECK GOOD.SDR HEEA966599Transceiver · inoperativeTRANSPONDER INOPERATIVE. REPLACED DETERIORATED RESISTOR R477. REPLACED PHOTOCELL V301 DUE TO WEAK REPLY LIGHT. REPAIRED. COOKED UNIT. FOUND MTL TO BE BELOW SPECS. ALIGNED RECEIVER. REPAIRED. BENCH CHECK GOOD.SDR HEEA966598Transceiver · defectiveINTERMITTENT SIGNAL. FOUND V101 CAVITY OSCILLATOR WEAK. REPLACED V101 CAVITY OSCILLATOR. ADJUSTED POWER OUT AND FREQUENCY TO SPECS. BENCH CHECK GOOD.SDR HEEA966582Transceiver · inoperativeINOPERATIVE. REPLACED WEAK V101 CAVITY OSCILLATOR AND WEAK V301 PHOTODETECTOR. ADJUSTED FREQUENCY. BENCH CHECK GOOD.SDR HEEA966581Transceiver · defectiveDOES NOT RESPOND. VERIFIED UNIT TO HAVE LOW POWER OUT AND INTERMITTENT RECEIVE. REPLACED CAVITY OSCILLATOR V101. REPAIRED LOW POWER. RESOLDERED GROUND CONNECTIONS ON PRE-SELECTOR. REPAIRED INTERMITTENT RECEIVE. ADJUSTED FREQUENCY AND PULSE WIDTH. BENCH CSDR HEEA966580Transceiver · defectiveUNIT NOT REPORTING ALTITUDE. VERIFIED UNIT TO HAVE VERY WEAK POWER OUT. TRIED ADJUSTING POWER TO SPECS. NO HELP. REPLACED CAVITY OSCILLATOR V101. REPAIRED. ADJUSTED FREQUENCY. BENCH CHECK GOOD.SDR 96ZZZX1556Transponder · bogus modUNIT WAS INSPECTED AND FOUND TO HAVE AN UNAPPROVED MODIFICATION THAT ALLOWED INSTALLATION OF A 250W CAVITY. THIS UNIT WAS DESIGNED FOR 125W ONLY. THE UNIT WAS TAGGED AS SERVICEABLE.SDR HEEA966505Transceiver · malfunctionTRANSCEIVER MUST BE RECYCLED ON FIRST FLIGHT TO SEND SIGNAL, WORKS FINE THE REST OF THE DAY. REPLACED PHOTOCELL V301 DUE TO WEAK REPLY LIGHT. REPAIRED. ALIGNED RECEIVER. ADJUSTED POWER OUT AND FREQUENCY TO SPECS. BENCH CHECK GOOD.SDR HEEA966502Transceiver · weakNO RECEPTION BY TOWER. REPLACED WEAK V101 CAVITY OSCILLATOR. ADJUSTED FREQUENCY. BENCH CHECK GOOD.SDR AU960155Controller · faulty(AUS) A.T.C. TRANSPONDER CONTROLLER FAULTYSDR 96ZZZX558Transponder · failedREINSTALLED ADC AFTER MOD STATUS UPGRADE AND CERTIFICATION. WHILE COMPLYING WITH CFR SECTION 91.411/91.413 FUNCTION TEST, NOTED NR 2 TRANSPONDER ALTITUDE READ-OUT WAS INVALID FROM 500 FEET TO 1,000 FEET AND AT EACH ASCENDING 500 FOOT INCREMENT TO THE NEXT THOSDR HEEA966471Transceiver · defective2 YEAR INSPECTION DUE. REPLACED WEAK V101 CAVITY OSCILLATOR. ADJUSTED FREQUENCY. BENCH CHECK GOOD.SDR HEEA966373Transceiver · defectiveBENCH CHECK NEEDED. INSPECTED UNIT AND FOUND UNIT HAS NO TRANSMIT. FOUND OUTPUT OF MICROPROCESSOR I405 TO BE BAD. REPLACED INTEGRATED CIRCUITS I402 AND I406. REPLACED CAVITY OSCILLATOR V101. REPLACED BROKEN TRANSISTOR Q415 AND INSTALLED HEATSINKBEHIND TRASDR HEEA966341Transceiver · failedDOES NOT TRANSMIT CODE 0401 OR 1201 NO REPLY. REPLACED DEFECTIVE V101 CAVITY OSCILLATOR. ADJUSTED AS NEEDED AND BENCH CHECK GOOD.SDR CA960102001Coax · damaged(CAN)TRANSPONDER COAX DAMAGED BY TY-RAPS ALL ALONG ITS LENGTH CAUSING TRANSPONDER TO BE PULLED OFF FREQUENCY. IN ADDITION, THE ANTENNA WAS FOUND DAMAGED CAUSING FURTHER TRANSPONDER PROBLEMS. IN ADDITION, ANUMBER OF INSTRUMENT HOSES WERE FOUND CRACKED AND BRITTSDR HEEA956183Transceiver · inoperativePILOT REPORTED INOPERATIVE. FOUND POWER OUT LOW AT ABOUT 125W AND FREQUENCY OUT OF SPECS. ADJUSTED CAVITY OSCILLATOR V101 TO GET CORRECT POWER OUT AND FREQUENCY. REPLACED BURNT R477 RESISTOR. INSPECTED AND BENCH CHECK GOOD.SDR HEEA956181Control Display · defectiveDISPLAY DIM IN BRIGHT LIGHT. REPLACED PHOTOCELLV101. REPAIRED. REPLACED INTERMITTENT "IDT" SWITCH S103. BENCH CHECK GOOD.SDR HEEA956180Transceiver · defectiveWEAK, OFF FREQUENCY. ALIGNED RECEIVER AND ADJUSTED FREQUENCY TO SPECS. REPAIRED. REPLACED CRACKED FACEPLATE. REPLACED PHOTOCELL V301 DUE TO WEAK REPLY LIGHT. REPAIRED. ADJUSTED PULSE WIDTH. BENCH CHECK GOOD.SDR HEEA956179Transceiver · defectiveNO RECEIVING LIGHT. REPLACED PHOTOCELL V301 DUE TO WEAK REPLY LIGHT. REPAIRED. ADJUSTED FREQUENCY. BENCH CHECK GOOD.SDR HEEA956177Transponder · defectiveINTERMITTENT DISPLAY AND LOCKS UP.SDR HEEA956171Transponder · inoperativeINOPERATIVE. TROUBLESHOT AND FOUND INSULATING BUSHING ON TRANSISTOR Q501 BURNT AND CAUSING A SHORT TO GROUND. REPLACED BUSHING. CLEANED CORROSION ON CHASIS. BENCH CHECK GOOD.SDR HEEA956169Transponder · inoperativeTRANSPONDER NEEDS BENCH CHECK. UNIT INOPERATIVE. SENT TO THE RADIO SHOP FOR INSPECTION AND REPAIR.SDR HEEA956155Transceiver · defectiveTWO YEAR INSPECTION REQUIRED. FOUND V101 CAVITY OSCILLATOR WEAK AND V301 PHOTODETECTOR INOPERATIVE. REPLACED BOTH ITEMS. ADJUSTED POWER OUT AND FREQUENCY TO SPECS. BENCH CHECK GOOD.SDR HEEA956154Transceiver · defectiveBENCH CHECK NEEDED. INSPECTED AND TESTED. REPLACED CAVITY TUBE V101 DUE TO WEAK POWER OUT. REPAIRED. ADJUSTED PULSE WIDTH. BENCH CHECK GOOD.SDR HEEA956152Transceiver · failedNOT RECEIVED BY ATC AFTER 2 HOURS OF FLIGHT. REPLACED BROKEN FACEPLATE. REPLACED PHOTOCELL V301 DUE TO WEAK REPLY LIGHT. REPAIRED. REPLACED BROKEN HOLD DOWN AND INSTALLED GROOVE PIN. ADJUSTED PULSE WIDTH. BENCH CHECK GOOD.SDR HEEA956151Transceiver · inoperativeATC REPORTING INOPERATIVE. FOUND WAFER SWITCHES (2 EACH) BROKEN. REPLACED SWITCH BOARD. REPAIRED PROBLEM. ALIGNED RECEIVER AND ADJUSTED FREQUENCY. BENCH CHECK GOOD.SDR HEEA956127Transceiver · defectiveREPAIR FACEPLATE. REPLACED DEFECTIVE V301 PHOTODETECTOR. BENCH CHECK GOOD.SDR HEEA955994Transponder · inoperativeINOPERATIVE. REPLACED SHORTED TRANSISTOR Q104 AND REPAIRED BURNT FOIL ON PC BOARD FOR 28V SUPPLY. REPAIRED PROBLEM AND BENCH CHECKED GOOD.SDR HEEA955992Transceiver · defectiveBENCH CHECK REQUIRED. INSPECTED AND TESTED. REPLACED CAVITY TUBE V101 DUE TO LOW POWER OUT. REPAIRED. ADJUSTED FREQUENCY AND ALIGNED RECEIVER. CLEANED CONTACTS ON ALL WAFERS. BENCH CHECK GOOD.SDR HEEA955991Transceiver · defectiveFREQUENCY IS OUT OF TOLERANCE. ADJUSTED FREQUENCY, REPLACED MISSING WASHER AND PIN ON UNITS RETAINING SCREW. INSPECTED UNIT. BENCH CHECK GOOD.SDR HEEA955990Transceiver · defectiveBENCH CHECK REQUIRED. INSPECTED AND TESTED. REPLACED CAVITY TUBE V101 DUE TO LOW POWER OUT. REPAIRED. REPLACED PHOTOCELL V301 DUE TO WEAK REPLY LIGHT. REPAIRED. ALIGNED RECEIVER TO SPECS. ADJUSTED FREQUENCY. BENCH CHECK GOOD.
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