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 HEEA0013109Transponder · failedTRANSPONDER WILL NOT IDENT AND WILL NOT TEST. PERFORMED PRELIMINARY INSPECTION AND FOUND SWITCH BOARD INTERMITTENT. REPLACED SWITCH BOARD. ALSO FOUND PHOTOCELL NOT DIMMING PROPERLY. REPLACED PHOTOCELL. UNIT BENCH CHECK GOOD.Mar 3, 1998 · N406PH · Bell 407SDR HEEA0012788Transceiver · failedTRANSPONDER INOPERATIVE.Feb 5, 1998 · N104PH · Bell 206B3SDR HEEA0012780Transceiver · failedTRANSPONDER DOESN'T POWER UP. PERFORMED PRELIMINARY INSPECTION. FOUND UNIT NOT RECEIVING AND IDENT LIGHT BLINKS. SWAPPED V101 CAVITY TUBE. NO HELP.Feb 5, 1998 · N406PH · Bell 407SDR HEEA0012773Transponder · failedTRANSPONDER HAS NO OUTPUT.Feb 5, 1998 · N911NC · Bolkms BK117A3SDR HEEA0012762Transceiver · failedTRANSCEIVER NO POWER. ADJUSTED CAVITY FOR GOOD POWER OUT AND ON FREQUENCY. REPLACED WEAK V301 PHOTODETECTOR. BENCH CHECK GOOD.Feb 5, 1998 · N2124Z · Bell 206L1SDR HEEA0012729Transponder · failedTRANSPONDER INOPERATIVE.Jan 27, 1998 · N15460 · Skrsky S76ASDR HEEA0012703Transponder · failedTRANSPONDER CONSTANTLY REPORTS CODE "7777" WITH IDENT MODE NO MATTER WHAT IS DIALED ON CONTROL HEAD. REPLACED WITH SERVICEABLE UNIT.Jan 26, 1998 · N1202T · Bell 412SDR HEEA0012699Transceiver · failedINTERMITTENT OPERATION WITH ATC. PERFORMED PRELIMINARY INSPECTION. FOUND POWER OUT LOW. ADJUSTED V101 CAVITY TUBE. NO HELP. REPLACED V101 CAVITY TUBE. REPAIRED. ADJUSTED PULSE WIDTH AND FREQUENCY. BENCH CHECK GOOD.Jan 26, 1998 · N911FL · Bolkms BO105SSDR HEEA0012698Control · failedDISPLAY DOES NOT LIGHT UP. PERFORMED PRELIMINARY INSPECTION. FOUND NO DISPLAY. SWAPPED DISPLAY DS103. NO HELP. SWAPPED BOARDS. FOUND PROBLEM ON PROCESSOR BOARD. TROUBLESHOT AND FOUND BROKEN FOIL ON BOARD. REPAIRED BROKEN FOIL, REPAIRED, INSTALLED MOD 2 Jan 26, 1998 · N401PH · Bolkms BK117A3SDR HEEA0012697Transceiver · defectiveKNOB BROKEN OFF. PERFORMED PRELIMINARY INSPECTION. REPLACED FACEPLATE ASSEMBLY P/N 200-2020-01, REPAIRED. ADJUSTED TO SPECS. BENCH CHECK GOOD.Jan 26, 1998 · N10761 · Bell 206L1SDR SWIA971073Transponder · failedDEPARTING SAN, LOCAL APPROACH REPORTED THAT THE 3RD DIGIT ON NR 1 TRANSPONDER WAS SHOWING A DIFFERENT NUMBER THAN WAS ASSIGNED. TRIED NR 2 TRANSPONDER AND IT WAS TOTALLY INOPERABLE. WAS TOLD BY DISPATCH TO DIVERT TO LAX. INSTALLED NEW CONTROL HEAD CTRL 92 AJan 8, 1998 · N190SW · Emb EMB120ERSDR VTZA98009Adapter · failureFLT 6551 - IAD-CLE - DURING CRUISE, AIRCRAFT MADE AN UNSCHEDULED LANDING DUE TO BOTH TRANSPONDERS FAILED. AIRCRAFT RETURNED TO GATE WITH NO FURTHER PROBLEMS. MAINTENANCE INSPECTED AND REMOVED AND REPLACED CAD C-2 COUPLER ADAPTER, OPS CHECK OK. AIRCRAFT WAS Jan 7, 1998 · N494UE · Bag JETSTM3201SDR RAIA980104Control Adapter · failedFLT 7025 - STL - SMOKE ODOR N COCKPIT, BOTH TRANSPONDERS INOPERATIVE. MAINTENANCE REPLACED ATC CONTROL ADAPTER. (M)Jan 5, 1998 · N340TE · Bag JETSTM3201SDR HEEA0012413Transponder · failedTRANSPONDER FAILED. UPON DISASSEMBLING UNIT FOUND MODULATOR BOARD HAD A BURNT SECTION.Dec 31, 1997 · N59806 · Bell 214STSDR HEEA0012404Control Display · failedTRANSPONDER CONTROL HAS SEVERAL LED'S INTERMITTENT. PERFORMED PRELIMINARY INSPECTION. FOUND LED'S INTERMITTENT. REPLACED DS103 DISPLAY. REPAIRED. CLEANED WAFER SWITCHES. BENCH CHECK GOOD.Dec 31, 1997 · N6957Y · Bell 214STSDR HEEA0012394Transponder · failedTRANSPONDER INOPERATIVE. PERFORMED PRELIMINARY INSPECTION. FOUND Q402 LOOSE IN UNIT. RESOLDERED Q402. UNIT NOW MAKING NOISE. TROUBLESHOT; SWAPPED OUT T401. REPLACED Q415, Q401, Q402, C401, C402, C403, C410, CR401, CR402. REPAIRED. UNIT STILL NOT RECEIVIDec 31, 1997 · N129MR · Bell 206L3SDR HEEA0012393Transponder · failedNO INDICATION OF INTERROGATION. PERFORMED PRELIMINARY INSPECTION. FOUND REPLY LIGHT DIM, REPLACED V301 PHOTOCELL, REPAIRED. ADJUSTED UNIT TO SPECS. BENCH CHECK GOOD.Dec 31, 1997 · N2272J · Bell 206B3SDR CA980113004Resistor · burnt(CAN) SMOKE IN COCKPIT. TRANSPONDER FOUND TO HAVE BURNT DIMMING RESISTOR. REPAIRED AND CERTIFIED.Dec 15, 1997 · Cessna 172NSDR HEEA0012179Transponder · weakTRANSPONDER WEAK OUTPUT.Dec 3, 1997 · N404PH · Bell 407SDR HEEA0012159Transponder · failedTRANSPONDER NO TEST LIGHT AND NO POWER. PERFORMED PRELIMINARY INSPECTION AND FOUND REPLY LIGHT DIM, REPLACED V301 PHOTOCELL. REPAIRED. BENCH CHECK GOOD.Nov 28, 1997 · N2251A · Bell 206L1SDR HEEA0012158Transponder · inoperativeTRANSPONDER INOPERATIVE. FOUND UNIT TO HAVE LOW POWER OUT. REPLACED WEAK V101 CAVITY OSCILLATOR. REPAIRED. ADJUSTED AS NEEDED. BENCH CHECK GOOD.Nov 28, 1997 · N417PH · Bell 407SDR HEEA0012111Transponder · failedTRANSPONDER INTERMITTENT, DROPPING OFF WITH ATC. PERFORMED PRELIMINARY INSPECTION AND FOUND RECEIVER DROPPING OFF LINE. REPLACED CR202 MIXER DIODE. REPAIRED. ADJUSTED PULSE WIDTH AND FREQUENCY. BENCH CHECK GOOD.Nov 19, 1997 · N911FL · Bolkms BO105SSDR HEEA0012110Transponder · failedTRANSPONDER DOES NOT SEND OUT A CODE. (NO POWER OUT AND PULSE WIDTH OUT OF SPECS)Nov 19, 1997 · N50182 · Bell 206L1SDR HEEA0011928Control Display · defectiveXPONDER CONTROL LIGHTS DIM FOR DAY USE. PERFORMED PRELIMINARY INSPECTION. FOUND DISPLAY DIM. REPLACED V101 PHOTOCELL. REPAIRED. BENCH CHECK GOOD.Nov 10, 1997 · N22347 · Bell 412SDR HEEA0011869Transceiver · failedTRANSCEIVER INOPERATIVE. PERFORMED PRELIMINARY INSPECTION. FOUND POWER OUT LOW. ADJUSTED V101 CAVITY TUBE. NO HELP. REPLACED V101 CAVITY TUBE P/N C2080A, V301 PHOTOCELL P/N 134-05005-0002 AND FACEPLATE P/N 200-02020-0001, REPAIRED. ADJUSTED PULSE WIDTH ANNov 10, 1997 · N41791 · Bell 206L3SDR HEEA0011862Transponder · defectiveIDENT LIGHT INOPERATIVE. PERFORMED PRELIMINARY INSPECTION. REPLACED V301 PHOTOCELL P/N 134-05005-0002. REPLACED DS301 BULB P/N 037-00025-0000, REPAIRED. ALSO REPLACED FACEPLATE P/N 200-2020-01, LOCKING SCREW P/N 076-0921-00 AND GROOVE PIN P/N 090-0265-00. Nov 10, 1997 · N103PH · Bell 206B3SDR HEEA0011858Transponder · failedTRANSPONDER WILL NOT IDENT. REPLACED CAVITY OSCILLATOR V01. REPAIRED. INSTALLED CAP PLUGS. ADJUSTED FREQUENCY. BENCH CHECK GOOD.Nov 10, 1997 · N911LK · Bolkms BK117B2SDR HEEA0011857Transponder · defectiveKNOB BROKE OFF FACE. REPLACED KNOB. ALSO REPLACED WEAK V101 CAVITY OSCILLATOR. REPAIRED UNIT. ADJUSTED PULSE AND FREQUENCY. BENCH CHECK GOOD.Nov 10, 1997 · N1078G · Bell 206L1SDR AU971365Transponder · failed(AUS) TRANSPONDER FAULTY. FOUND DURING TEST IAW AD/RAD/47 AND AD/RAD/43Oct 31, 1997 · Cessna 182QSDR HEEA0011618Resistor · deterioratedTRANSPONDER WILL NOT TEST OR IDENT. PERFORMED PRELIMINARY INSPECTION AND FOUND REPLY LIGHT DIM. ALSO FOUND RESISTOR R477 DETERIORATED. REPLACED V301 PHOTOCELL AND R477 RESISTOR. BENCH CHECK GOOD.Oct 21, 1997 · N407MM · Bell 407SDR HEEA0011579Connector · dirtyNO OUTPUT READ FROM UNIT BY TEST EQUIPMENT. CLEANED REAR CONNECTOR AND UNIT FIRED UP. REPLACED WEAK V301 PHOTO DETECTOR. ALSO REPLACED INTERMITTENT FRONT SWITCH BOARD ASSEMBLY. CLEANED SWITCH BOARD AND AJUSTED PULSE. BENCH CHECK GOOD.Oct 21, 1997 · N5745N · Bell 206L1SDR HEEA0011578Transistor · failedNO REPLY FROM TRANSPONDER. REPLACED BROKEN Q411 TRANSISTOR AND OPEN Q409 TRANSISTOR. COOKED UNIT AND BENCH CHECK GOOD.Oct 21, 1997 · N1078D · Bell 206L1SDR HEEA0011267Transponder · inoperativeTRANSPONDER UNIT INOPERATIVE. TEST LIGHT WILL NOT COME ON.Oct 8, 1997 · N5742H · Bell 206L1SDR HEEA0011262Transponder · defectiveTRANSPONDER NEGATIVE OUTPUT. REPLACED OPEN RESISTOR R477. ALSO REPLACED V101 CAVITY THAT WAS INTERMITTENT. FOUND MODE SELECTOR SWITCH INTERMITTENT. REPLACED FRONT SELECTOR BOARD. CLEANED SWITCHES. INSPECTED AND BENCH CHECK GOOD.Oct 8, 1997 · N2761X · Bell 206L1SDR HEEA0011261Transponder · malfunctionTRANSPONDER REPLY LIGHT TOO DIM IN DAYLIGHT. PERFORMED PRELIMINARY INSPECTION, FOUND V301 PHOTOCELL BAD. REPAIRED. ALSO FOUND POWER OUT LOW, ADJUSTED V101. REPLACED V101 CAVITY TUBE. REPAIRED. ADJUSTED TO SPECS. BENCH CHECK GOOD.Oct 8, 1997 · N206LS · Bell 206L3SDR HEEA0011243Transponder · inoperativeTRANSPONDER INOPERATIVE. DOES NOT TRANSMIT OR RECEIVE. PERFORMED PRELIMINARY INSPECTION AND FOUND UNIT DOES NOT TRANSMIT OR RECEIVE. REPLACED I515, I532, I533, I534, I535, I536, I540 AND I541 ALL INTEGRATED CIRCUITS. DID NOT REPAIR. SENT TO ALLIED SIGNAL AOct 7, 1997 · N3893L · Bell 412SDR HEEA0011235Transponder · inoperativeTRANSPONDER INOPERATIVE. CODES NOT BEING RECEIVED. FOUND RECEIVER WEAK AND TRANSMIT POWER WEAK.Oct 7, 1997 · N1547D · Skrsky S76ASDR HEEA0011213Transponder · knob brokenTRANSPONDER KNOB BROKEN. PERFORMED PRELIMINARY INSPECTION, REPLACED KNOB. BEGAN BENCH CHECK AND FOUND REPLY LIGHT FLASHING AND PULSE WIDTH OUT OF SPECS.Oct 7, 1997 · N1077A · Bell 206L1SDR HEEA0011212Transponder · inoperativeINOPERATIVE. NO REPLY LIGHT. FOUND DS5 BULB BAD. REPLACED DS5 BULB AND ADJUSTED FREQUENCY TO SPECS. REPAIRED UNIT. BENCH CHECK GOOD.Oct 7, 1997 · N402PH · Bell 407SDR HEEA0011210Transponder · failedSELECTOR KNOBS SHOW FALSE PULSES WHEN TURNED.Oct 6, 1997 · N40466 · Snias AS350B2SDR HEEA0011209Transponder · malfunctionTRANSPONDER IDENT LIGHT WEAK AND OFF FREQUENCY. VERIFIED WEAK REPLY LIGHT PHOTODETECTOR V301. UNIT WAS ON FREQUENCY. REPLACED V301 PHOTODETECTOR. CLEANED CODING SWITCHES. BENCH CHECK GOOD.Oct 6, 1997 · N2270G · Bell 206B3SDR HEEA0011208Transponder · failedTRANSPONDER INTERROGATION LIGHT INOPERATIVE. PERFORMED PRELINARY INSPECTION. FOUND DS301 LAMP VERY DIM. REPLACED V301 PHOTOCELL. REPAIRED. ADJUSTED UNIT TO SPECS. BENCH CHECK GOOD.Oct 6, 1997 · N4302G · Bolkms BO105SSDR HEEA0011207Transponder · inoperativeTRANSPONDER INOPERATIVE. PERFORMED PRELINARY INSPECTION. REPLACED RESISTOR R441, RESISTOR R447, TRANSISTOR Q415, DIODE CR404, DIODE CR407 AND RESISTOR R429. REPAIRED. ALSO REPLACED FACEPLATE ASSY AND PHOTOCELL V301. TESTED, ADJUSTED POWER OUT, PULSE WIDTH Oct 6, 1997 · N7170D · Bolkms BO105SSDR HEEA0011206Transponder, · wont testWON'T TEST. PERFORMED PRELINARY INSPECTION, FOUND V101 BAD, REPLACED V101 CAVITY TUBE. REPAIRED. ALSO REPLACED V301 PHOTOCELL DUE TO BEING INOPERATIVE. REPAIRED. BENCH CHECK GOOD.Oct 6, 1997 · N31821 · Bell 206L3SDR HEEA0011205Transponder · faultyNUMBERS ON TRANSPONDER DOES NOT MATCH WHAT TOWER SAYS. FOUND CODING SWITCHES DIRTY, POSSIBLE CAUSING INCORRECT CODING. CLEANED SWITCHES TO REPAIR. REPLACED WEAK V101 CAVITY OSCILLATOR AND DETERIORATED R477 RESISTOR. ADJUSTED AS NEEDED. BENCH CHECK GOOD.Oct 6, 1997 · N406EH · Bell 206L1SDR HEEA0011204Transponder · malfunctionREPORTS 3136 WHEN SELECTED TO 0152. VERIFIED EXTRA PULSES AS CODING SWITCHES WERE CHANGED. CLEANED CODING SWITCHES. REPLACED BROKEN FACEPLATE ASSEMBLY AND INSTALLED Q415 HEAT SINK. INSPECTED AND BENCH CHECK GOOD.Oct 6, 1997 · N2163Y · Bell 206B3SDR HEEA0011203Transponder · malfunctionTRANSMITS DIFFERENT CODE NUMBERS THAN SELECTED CODE. PERFORMED PRELIMARY INSPECTION, CLEANED WAFER SWITCHES. REPAIRED. REPLACED C401 AND C402 CAPACITORS. REPAIRED. BENCH CHECK GOOD.Oct 6, 1997 · N104PH · Bell 206B3SDR HEEA0011121Transponder · low powerTRANSPONDER LOW POWER OUT.Sep 30, 1997 · N2278V · Bell 206B3SDR HEEA0011114Transponder · malfunctionTRANSPONDER DEFECTIVE. WITH 6033 CODE IN TRANSPONDER, ATC RECEIVES 6733.Sep 30, 1997 · N407MM · Bell 407SDR HEEA0010990Transceiver · failedTRANSCEIVER NO REPLY, NO TRANSMIT. PERFORMED PRELIMINARY INSPECTION, VERIFIED NO TRANSMIT. REPLACED V101 CAVITY OSCILLATOR, RESep 15, 1997 · N6160Y · Bell 206L3
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