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 DALA2026053103305Transponder · failedATC REPORTED INTERMITTENT MODE C. ALTITUDE REPORTING FAILURES IN ROUTE. ATC TRANSPONDER/AUTOMATIC ALTITUDE REPORT SYS AND A/C VACATED RVSM AIRSPACE. USE FLT AWARE TO VERIFY DATA GAPS FOR THIS FLIGHT. C/A: R/R ATC TRANSPONDER 1 +2 IAW A319 AMM 34-52 BITE TEST PMay 28, 2026 · N370NB · Airbus A319114SDR AALA202508192006Control Panel · odorAIRCRAFT WAS GROUNDED: ACRID SMELL IN FLIGHT DECK. ACCOMPLISHED CARD 08L00021001. FOUND TCAS AND ATC PANEL PRODUCING ACRID ODOR. REMOVED AND REPLACED PANEL, PER AMM 34-53-03.Aug 15, 2025 · N969NN · Boeing 737823SDR YENA2025080500801Transponder · no testFLT#2260, MAD-BOS. (ETOPS) ATC/XPDR 2 FAILED DURING PRE FLIGHT ( ATC SYSTEM - TRANSPONDER SINGLE POSITION ); OPERATIONAL TEST OF THE ATC WAS ACCOMPLISHED AS PER AMM 34-52-00-740-004-A.NO FAULTS NOTED ON BOTH CHANNELS MX-4 UPDATED. PLACARD REMOVED.Aug 4, 2025 · N4062J · Airbus A321271NXSDR ABXA20250804170Transponder · inoperativeON TAXI OUT, ATC TRANSPONDER INOP. AIRCRAFT RETURNED TO BLOCKS. (BTB). MAINTENANCE PERFORMED OPS TEST OF TRANSPONDER IAW AMM 34-53-03. OPS TEST GOOD. AIRCRAFT RETURNED TO SERVICE.Aug 4, 2025 · N219CY · Boeing 767383SDR MTNA20250327001Transponder · inoperativeDURING CLIMB OUT FOR FLIGHT 8300 EWR-IAD, THE PIC IDENTIFIED THE TRANSPONDER WAS INOP AND COMPLETED AN AIR RETURN, DECLARING NO EMERGENCY AND LANDING UNEVENTFULLY.Mar 27, 2025 · N988FE · Cessna 208BSDR SWI2024F00559Antenna · scratchedFORWARD ATG ANTENNA HAS TOOLING MARKS AROUND THE CONNECTOR HOLES, HN00159971 (C-CHECK RO 7/9/2024) REPLACED NEW FWD ATG ANTENNA DOUBLER REF GOGO DOC# D12710-20110 REV J & SRM 51-42-20-001-001-A01 COMPLIED WITH SKYWEST TASK CARD 51-900-1002-SKY LEAK AMay 13, 2024 · N679CA · Cndair CL6002D24SDR ABXA20240319859Control Panel · inoperativeATC COULD NOT READ XPONDER, NEITHER L NOR R. AC RETURNED TO GATE. MAINTENANCE PERFORMED TROUBLESHOOTING RESULTING IN REPLACEMENT OF THE ATC CONTROL PANEL IAW AMM 34-53-02. OPS TEST OF BOTH TRANSPONDERS GOOD. AC RVSM COMPLIANT. AC DEPARTED.Mar 18, 2024 · N219CY · Boeing 767383SDR ABXA20240216525Transponder · unknownATC REPORTED ONLY PRIMARY ON THE L XPDR SWAPPED TO R NO CHANGED AC RETURENED TO GATE AND MAINTENANCE GROUNDED AC. MAITENANCE PERFORMED ATC TEST IAW B767 AMM 34-53-01 NO FAULT FOUND TEST PASSED AC REMAIN CAT IIIB. AND RETURND AC TO SERVICE . AND AC DEPARTED .Feb 15, 2024 · N219CY · Boeing 767383SDR 2023FA0000414Transponder · defectivePILOT OBSERVED SMOKE IN COCKPIT CAUSED BY FAULTY TRANSPONDER INSTALLED UNDER STC# SA01512WI-D 07/09/2010. FOUND BURNT CHIP ON CIRCUIT BOARD.Aug 12, 2023 · N939FE · Cessna 208BSDR GTIA2023072437350Transponder · fault messageTRANSPONDER SYSYTEM 1 +2 FAILED IN FLIGHT NAV TCAS FAULT-PERFORMED BITE TEST OF THE TCAS IAW AMM 34-43-00-740-A. NO FAULTS NOTED AT THIS TIME. A/C OK FOR SVC. PERFORMED MMR 1&2 BITE TEST IAW AMM 34-36-00. PERFORMED ATC BITE TEST IAW AMM 34-52-00. NO FAULTS Jul 22, 2023 · N695NK · Airbus A320232SDR 2023FA0000322Transponder · warning messageGARMIN GTX345 TRANSPONDER FAILED ON TAKE OFF. "XPDR FAIL" CAS MESSAGE. TRANSPONDER SEEMS TO HAVE QUIT COMMUNICATING WITH G1000NXI SYSTEM. PROBLEM CLEARED WITH POWER CYCLE OF G1000NXI SYSTEM. INTERROGATED TRANSPONDER WITH TEST SET IN AIR AND GROUND COJun 21, 2023 · N713ND · Piper PA28181SDR DXTA2023021480470Unknown · unknownDURING CRUISE AT FL410 A TCAS IN STBY DIDPLAYED ON THE MFD AND A WHITE XPDR IN STBY CAS MESSAGE DISPLAYED. TRANSPONDER WAS IN A/RA BUT TRANSPONDER CODE WAS YELLOW ALONG WITH FLIGHT ID. ATC NOT ABLE TO GET ANYTHING BUT A PRIMARY RETURN, REGARDLESS OF WHICH TRAFeb 13, 2023 · N762QS · Bombdr BD1001A10SDR DXTA2021081246810Transponder · faultedAMBER XPDR 1 FAIL CAS MESSAGE ILLUM. C/B TRIPPED WITH ODOR OF SMOKE. SMOKE ODOR DISSIPATED WITH BREAKER OFF. T/S FAILED TCAS/XPDR, NO MDC DATA CHECK FOR CODES. XPDR 1 FAIL CAS IS ACTIVE & DID NOT GO OUT CB IN. FOUND TCAS/XPDR 1 CB OUT ON ARRIVAL, RESET CAug 11, 2021 · N779QS · Bombdr BD1001A10SDR AALA202105179030Control Panel · smokeAIRCRAFT WAS GROUNDED: AT FL340, EXPERIENCED SMOKE IN COCKPIT FROM "FL' BUTTON ON TRANSPONDER AND FOUND "ELECTRICAL PANEL LIGHTS" CIRCUIT BREAKER POPPED; FLIGHT DIVERTED TO ORD AND LANDED WITHOUT FURTHER INCIDENT. REPLACED AIR TRAFFIC CONTROL CONTROL PANEL IAWMay 14, 2021 · N909NN · Boeing 737823SDR SIMA20210329003Transponder · failedAVIONICS ISSUES TRANSPONDER 1 FAIL NO FMS GS AFTER ROTATION FD WENT AWAY MFD TRACKING INCORRECTLY NO EICAS MESSAGE EMERGENCY NOT DECLARED. -C/A-INSPECTED FMS 1 AND 2 AND FOUND BOTH GPS 1 AND 2 FAIL ON CAPT'S SIDE PERFORMED RESET OF ELECTRICAL SYSTEM AS PER AMMMar 29, 2021 · N696AE · Emb EMB145LRSDR 9JLA2021010828358Transponder · malfunctionedIT WAS REPORTED FROM AIR TRAFFIC CONTROL (ATC) THAT THE AIRCRAFTS NR 1 TRANSPONDER SYSTEM WAS NOT TRANSMITTING MODE C ON MULTIPLE LEGS. THE MAINTENANCE VENDOR FUNCTIONAL CHECKED THE SYSTEM AND WAS NOT ABLE TO VERIFY THE DISCREPANCY ON THE GROUND. ALL TESTINGDec 13, 2020 · N480M · Beech 400ASDR ABXA20200803206Antenna · brokenTIP OF LOWER ATC ANTENNA FOUND BROKEN OFF. DEFERRED BY MAINTENANCE PROCEDURES. AIRCRAFT DEPARTED AND CREW HAD AN ATC FAULT MESSAGE. AIRCRAFT RETURN TO BLOCK AND WAS GROUNDED. REMOVED AND REPLACED ATCD ANTENNA, IAW AMM 34-53-03. AIRCRAFT RELEASED FOR FLIGHNov 4, 2020 · N749AX · Boeing 767232SDR IKBR2020100500012Antenna · deterioratedDURING 50HR INSPECTION FOUND TRANSPONDER ANTENNA DETERIORATED AND CRACKED. INSTALLED NEW TRANSPONDER ANTENNA P/N AV-22.Oct 5, 2020 · N737LG · Cessna 172NSDR BKEA20200115001Control Panel · malfunctionedCONTROL PANEL WAS NOT SET TO DURING THE MONITORED FLIGHT. WE ALSO NOTED THAT WHEN THE CONTROL PANEL WAS SET, THE SYSTEM REPORTED PROPERLY. SWAPPED IN ANOTHER PANEL FROM N110SN FOR TROUBLESHOOTING WITH THE SAME RESULTS. THE QUESTION THEN BECAME, IS THE CONTROLJan 11, 2020 · N719SA · Gulstm GIVSDR DEMA20191231001Transponder · failedON FINAL APPROACH, NR 1 TRANSPONDER FAILED. WHILE PILOT WAS CHANGING TO NR 2 TRANSPONDER, THE NR 1 TRANSPONDER BEGAN TO SMOKE. PILOT PULLED CIRCUIT BREAKER FOR NR 1 TRANSPONDER. LANDED WITHOUT INCIDENT.Dec 30, 2019 · N922FE · Cessna 208BSDR RU3A201912054067Transponder · fumesACRID SMOKE IN CABIN AFTER START UP. AVIONIC ON & ENVIRONMENTAL ON. MX CONFIRMED #2 TRANSPONDER WAS SOURCE OF FUMES. REMOVED AND REPLACED #2 MODE S TRANSPONDER.Dec 3, 2019 · N67 · Beech 300BEECHSDR CA190411003Transponder · inaccurate(CAN) BA SER CASE : 43929 SER - ATC COMPLAINED THAT XPDR WAS GIVING FL550 INSTEAD OF FL390 O CREW:XNDR#2 FAIL, ATC COMPLAINED THAT XPDR WAS GIVING FL550 INSTEAD OF FL390 - AFTER FULL POWER RESET-XPDR OPS TESTED-OK (TC# 20190411003)Apr 10, 2019 · Airbus BD5001A11SDR CA190329031Transponder · failed(CAN) TRANSPONDER SMOKING IN FLIGHT. PILOT REMOVED ELECTRICAL POWER TO THE TRANSPONDER. (TC# 20190329031)Mar 28, 2019 · Cessna 208SDR 6GTA201812110009Software · incorrectAIRCRAFT G1000 SYSTEM SHOWED VERSION 17, BUT THERE WAS NO LOG ENTRY FOR APPLICATION OF SERVICE LETTER 1194. A SOFTWARE MISMATCH ERROR WAS NOTED ON A GFC COMPONENT AT 3299 HOURS AND THAT ONE COMPONENT SOFTWARE WAS RELOADED AND ALL SYSTEMS APPEARED TO OPERATE NODec 9, 2018 · N2304D · Piper PA46R350TSDR FDEA201811273378Transponder · inoperativeAT 1 30 HRS INTO FLIGHT, RECEIVER LEVEL 1 TRANSPONDER 1 FAIL. SWITCHED TO TRANS 2 AND RECEIVED TRNSP 2 FAIL. BOTH TRANSPS INTERMITTENTLY FAILED REMAINING FLIGHT. TRANSPORTER 1 REPLACED SYSTEM 1 AND 2 FIM TASK 34-54-00-1, TEST OK. NO FAULTS REV NOV 1/2010. REPLNov 27, 2018 · N594FE · Doug MD11FSDR CA180223007Transponder · failed(CAN) LOST RADAR CONTACT WITH ATC FOR ~ 15 MIN, AFTER SEVERAL XPDR - SWITCHING`S (ON - OFF/NR 1 - NR 2) AND DIFFERENT SQUAWKS (1000/2000) RADAR CONTACT WAS BACK AGAIN DURING DESCENT AND APPROACH. OTHER EVENT UNDER SDR 20180221004 (ATC XPDR NR 2 REPLACEMENT). Feb 11, 2018 · Airbus BD5001A11SDR DALA2017122108792Control Panel · failedDURING TAXI OUT BOTH TRANSPONDERS 1 AND 2 FAILED. A BURNING ODOR WAS NOTED IN THE FLIGHT DECK WITH GPS LEFT FAILURE AND BOTH CLOCKS BLANK. AIRCRAFT RETURNED TO GATE. MAINTENANCE REMOVED AND REPLACED TRANSPONDER PANEL IAW AMM 34-53. OPERATIONAL CHECK OK, AIRCRADec 20, 2017 · N878DN · Boeing 737932ERSDR 6CBA2017081517171Transponder · failedENROUTE, THE FLIGHT CREW REPORTED AN ELECTRICAL BURNING ODOR, POSSIBLY TRANSPONDER, ATC CONFIRMED THAT THEY WERE NOT RECEIVING TRANSPONDER DATA. DIVERTED AND MADE A SAFE UNSCHEDULED LANDING. AVIONICS FOUND THE KT 70 TRANSPONDER FAULTY. VERIFIED THIS UNIT BAug 15, 2017 · N877AF · Pilats PC1247SDR FDEA201707071876Computer · failedGPWS FAILED WITH NOTICEABLE ELECTRICAL ODOR. NO SMOKE. CFDS SHOWS GPWC CURRENT FAULT 344507. FRONT FACE OF EPGWS HAS COMPUTER FAIL LIGHT6 ON. UNABLE TO DETECT ANY ELECTRICAL ODORS IN COCKPIT OR FWD AVIONICS AND INSPECTED EPGWS, FOUND NO SIGNS OF CHAJul 7, 2017 · N625FE · Doug MD11FSDR AALA20161229014Panel · contaminatedAIRCRAFT WAS GROUNDED. EMERGENCY DECLARED. JFK-CUN FLIGHT RETURNED TO JFK ACCOUNT SMOKE IN THE COCKPIT DURING CLIMBOUT. OVERWEIGHT LANDING UNEVENTFUL. FLUID FOUND ON ATC/TRANSPONDER PANEL. REMOVED AND REPLACED ATC CONTROL PANEL(AALA20161228013), VHF NAVIGATIONDec 28, 2016 · N916AN · Boeing 737823SDR AALA20161229013Panel · inoperativeAIRCRAFT WAS GROUNDED. EMERGENCY DECLARED. JFK-CUN FLIGHT RETURNED TO JFK ACCOUNT SMOKE IN THE COCKPIT DURING CLIMBOUT. OVERWEIGHT LANDING UNEVENTFUL. FLUID FOUND ON ATC/TRANSPONDER PANEL. REMOVED AND REPLACED ATC CONTROL PANEL(AALA20161228013), VHF NAVIGATIONDec 28, 2016 · N916AN · Boeing 737823SDR AALA20161228013Control Panel · inoperativeAIRCRAFT WAS GROUNDED. EMERGENCY DECLARED. JFK-CUN FLIGHT RETURNED TO JFK ACCOUNT SMOKE IN THE COCKPIT DURING CLIMBOUT. OVERWEIGHT LANDING UNEVENTFUL. FLUID FOUND ON ATC/TRANSPONDER PANEL. REMOVED AND REPLACED ATC CONTROL PANEL, VHF NAVIGATION PANEL (AALA20161Dec 28, 2016 · N916AN · Boeing 737823SDR AXSA 991 10/14/16Transponder · failedTHE PILOT REPORTED SMELLING SOMETHING HOT FOLLOWED BY TRANSPONDER NR 1 BECOMING INOPERATIVE. THE PILOT PULLED THE APPROPRIATE CIRCUIT BREAKER AND CONTINUED ON WITH THE NR 2 TRANSPONDER.Oct 14, 2016 · N991FX · Cessna 208BSDR AXSA201609290001Transponder · failedNR ONE TRANSPONDER FAILED WITH A PUFF OF SMOKE, PILOT TURNED UNIT OFF AND PULLED BREAKER.Sep 29, 2016 · N931FE · Cessna 208BSDR 2016FA0000457Transponder · smokeSMOKE FROM TRANSPONDER ON APPROACH FOLLOWED BY FAILED MASSAGE. SHORTLY AFTER SCREEN WENT BLACK.Sep 27, 2016 · N3518 · Cessna 206HSDR AALA20160422003Control Panel · faultyAIRCRAFT WAS GNDED. AIR INTERRUPT, EMER NOT DECLARED, LANDING UNEVENTFUL & ACFT NOT OVERWEIGHT. DURING CRUISE BOTH LT & RT TRANSPONDERS BECAME INOPERATIVE. R & R TCAS & ATC CONTROL PANEL & ACCOMPLISHED OPERATIONAL CHECK IAW AMM34-53-02. ACCOMPLISHED TCAS GNApr 22, 2016 · N760AN · Boeing 777223SDR COEA2016040101940Transponder · smokeFLIGHT 8695 LOG PAGE 160808. COMPONENT SMOKE ON DOWNWIND TO LANDING. SMOKE WAS OBSERVED COMING FROM NR 1 TRANSPONDER & BURNING WIRES WERE SMELLED, FAILED MSG APPEARED ON THE DISPLAY. TRANSPONDER WAS TURNED OFF & THE ACFT LANDED.Apr 1, 2016 · N940FE · Cessna 208BSDR AXSA20151217001Transponder · fumesPILOT REPORTED BURNING SMELL IN COCKPIT.Dec 16, 2015 · N780FE · Cessna 208BSDR CA151212003Transponder · failed(CAN) TRANSPONDER FAILED TEST DURING BIANNUAL TEST. UNIT FAILED FREQUENCY TEST UPON CORRELATION CHECK, UNIT WAS REPAIRED JUL 16, 2014 AND FREQUENCY WAS RECORDED LOW AT 1087 MHZ. SHOULD BE 1090 +- 1 MHZ.Dec 12, 2015 · Cessna 172MSDR AWKA20151204001Transponder · failedON DEPARTURE, DEPARTURE CONTROL ASKED THE FLIGHT CREW TO ENSURE THE TRANSPONDER WAS ON & SQUAWKING 3612. THE CREW THEN REPORTED BOTH TRANSPONDERS WERE INOPERATIVE BUT STILL SHOWING CODE 3612 WAS FUNCTIONING. THE FLIGHT CREW ELECTED TO RETURN TO THE DEPARTUREOct 29, 2015 · N550XJ · Bombdr BD1001A10SDR CA150914001Transponder · unknown(CAN) ATC FAILURE ON AUG 30TH, 2015. THE TIME-SERIES OF ATB EVENT IS AS FOLLOWS, ATC GROUND STATION CONFIRMED THAT NO RADAR ECHO FROM ACFT DURING TAXING. ATC OPERATED AS MULTILATERATION, ATC GROUND STATION ALSO CONFIRMED THAT NO RADAR ECHO WAS OBSERVED AFTERAug 30, 2015 · Bombdr DHC8402SDR BKEA20150819Transponder · malfunctionedJUST AFTER TAKEOFF WE RECEIVED "RT T/R INOPERATIVE" CASS MESSAGE AND ATC REPORTED THAT THEY DIDN'T HAVE OUR TRANSPONDER. WE CYCLED THROUGH OUR TRANSPONDER OPTIONS AS ATC CONTINUOUSLY ASKED WHERE AND AT WHAT ALTITUDE WE WERE. DURING THE 31 MINUTE FLIGHT WE INAug 19, 2015 · N236LC · Gulstm 200SDR DALA2015080504798Transponder · smokeDURING FLIGHT THE FLIGHT CREW NOTICED LIGHT SMOKE COMING FROM THE ATC TRANSPONDER PANEL IN THE COCKPIT. SWITCHED PANEL TO STBY AND THE SMOKE IMMEDIATELY STOPPED. OPENED BOTH TRANSPONDER CIRCUIT BREAKERS. THE FLIGHT CONTINUED TO DESTINATION. MAINTENANCE REPLAAug 4, 2015 · N372DA · Boeing 737832SDR AXSA20150722001Transponder · smokePILOT REPORTED SMOKE COMING FROM BEHIND TRANSPONDER.Jun 30, 2015 · N119WA · Emb EMB110P1SDR CA150526001Transponder · smoke(CAN) DURING TAXI OF ACFT, SMOKE WAS NOTICED COMING OUT FROM FACE OF TRANSPONDER. ACFT WAS SHUTDOWN & MAIN BASE NOTIFIED. AN INSPECTION WAS CARRIED OUT FROM A LOCAL AMO & DETERMINED TO BE AN INTERNAL PROBLEM WITH THE TRANSPONDER. THE UNIT WAS REMOVED & ACFTMay 22, 2015 · Cessna 172NSDR QMLA2014121414139Transponder · malfunctionedTHE PILOT DETECTED AN ELEC BURNING SMELL IN THE COCKPIT ON APPROACH. ONCE ON THE GND, HE CALLED IN THE MECHANIC TO INSPECT THE ACFT. FOUND THAT THE TRANSPONDER HAD BEEN THE SOURCE OF THIS SMELL & WAS INOPERATIVE. PLACED THE TRANSPONDER ON ORDER & DEFERRED TDec 14, 2014 · N156AM · Bolkms BK117B1SDR CALA2014060291180Warning System · false activationLOWER EICAS HAS ATC MODE S TRANSPONDER & RT MX MSG 34-49995. RESET SYS & ACCOMPLISHED TRANSPONDER OPERATION CHECK IAW MM 34-53-02.May 30, 2014 · N797UA · Boeing 777222SDR CALA2014021290367Switch · faultyTRANSPONDER LT & RT FAILED. REPLACED TOP ANTENNA COAXIAL SWITCH S10563 IAW AMM 34-53-04,PG401 & 34-53-00, PG501. BOTH ATC'S CHECKED OK, REINSTALLED FWD, PIT FWD, PANEL & TAPED.Feb 12, 2014 · N590UA · Boeing 757222SDR HNAA2014021200040Dadc · failedBOTH TRANSPONDERS ARE INOPERATIVE. R & R NR 1 DADC. SYSTEM CHECKS GOOD IAW AMM 34-12-02 AND SB 34-68.Feb 12, 2014 · N935HA · Dhav DHC8102SDR O2GA2014022680601Transponder · malfunctionedAIRCRAFT DEPARTED, CREW SWITCHED THE NR 1 TRANSPONDER FREQUENCY FROM TOWER TO DEPARTURE & WAS NOTIFIED THAT THEIR TRANSPONDER SIGNAL WAS INTERMITTENT. CREW SWITCHED OVER TO THE NR 2 TRANSPONDER & DEPARTURE NOTIFIED THEM THAT THE NR 2 TRANSPONDER SIGNAL WAS NOFeb 6, 2014 · N806UP · Beech B300
Back to JASC 3452