TCAS ANTENNA BOTTOM WAS REPLACED, ON P/N 071-50001-8102 S/N 582-34534, OFF P/N 071-50001-8102 S/N TLS33506. TEST SATISFACTORY. IAW. AMM 34-45-02-344-160 REV 144 DATE 22DEC24. TORQUE APPLIED 22.5 IN.LB S/N 924401137 DATE 30S - [SDR DALA2025021901270](https://openairdocs.org/sdr/DALA2025021901270.md): Coax · damaged · Feb 14, 2025 · N6715C · Boeing 757232 > SHIP 6715 -DIV- TO SLC DUE TO ERRONEOUS TCAS ADVISORIES. CORRECTIVE ACTION: DEFERRED TO MEL. (SUBSEQUENTLY WIRING AND COAX CHECKS PERFORMED AND SUPPRESSION CONNECTOR REPLACED.) - [SDR UIEA2024120101139](https://openairdocs.org/sdr/UIEA2024120101139.md): Antenna · corroded · Jan 15, 2025 · N641GT · Boeing 76738E > CORROSION ON BASE ANTENNA TCAS UPPER FUSELAGE(
TCAS ANTENNA WAS REPLACED WITH SATISFACTORY TEST IAW AMM 34-45-02-344-158. TORQUE APPLIED 20-LB-IN S/N 924401137 DATE 30/SEP/25 BONDING METTER 0.8 MILLI OHM S/N 80005870
) - [SDR UIEA2025010900009](https://openairdocs.org/sdr/UIEA2025010900009.md): Antenna · corroded · Jan 14, 2025 · N664GT · Boeing 76731B > UPPER TCAS ANTENNA WITH CORROSION ON THE BASE.(6734A112/002 UPPER TCAS ANTENNA WITH CORROSION ON THE BASE. UPPER TCAS ANTENNA WAS REPLACED WITH SATISFACTORY TEST IAW AMM 34-45-02-344-158 AND 34-45-02 REV 143 DATE 22/AUG/24 TORQUE S/N 924401124 DATE 30/SEP/2 - [SDR AALA202409302327](https://openairdocs.org/sdr/AALA202409302327.md): Computer · inoperative · Sep 27, 2024 · N954AN · Boeing 737823 > AIRCRAFT WAS GROUNDED: TCAS INOP BOTH TRANSPONDERS. RETURNED TO FIELD EMERGENCY DECLARED LANDED WITHOUT INCIDENT. REMOVED AND REPLACED TCAS COMPUTER IAW AMM 34-45-01. - [SDR 2024FA0000830](https://openairdocs.org/sdr/2024FA0000830.md): Lidar · broken · Aug 26, 2024 > THE OBSTACLE AVOIDANCE SYSTEM DID NOT ACTIVATE WHEN IT CAME TO A TREE. (UAS) - [SDR AALA202405076496](https://openairdocs.org/sdr/AALA202405076496.md): Computer · faulted · May 5, 2024 · N736AT · Boeing 777323ER > AIRCRAFT WAS GROUNDED: TCAS FAIL ILLUMINATED ON DEPARTURE AFTER A POSSIBLE STATIC DISCHARGE. FAIL LIGHT EXTINGUISHED ON DESCENT PASSING FL 180. MAINTENANCE FOUND MX MSG 34-45010, TCAS HAS A INTERNAL FAULT. DIVERTED TO JFK AS A PRECAUTION, NO EMERGENCY DECLARED - [SDR ABXA2024042886](https://openairdocs.org/sdr/ABXA2024042886.md): Warning System · unknown · Apr 28, 2024 · N226CY · Boeing 767383 > ON FIRST APPROACH TO MIA GPS WWARNING TERRAIN. A/C HAD GEAR/FLAPS DOWN AND WAS ON GLIDE SLOPE FOR RWY 9. SECOND APPROACH WAS NORMAL. MAINTENCE GROUNDED AC AND ACCOMPLISHED GPWS SYS TEST IAW AMM 34-46-00 FOUND NORMAL AT THIS TIME. RETUREN AC TO SERVICE - [SDR DALA2024020901781](https://openairdocs.org/sdr/DALA2024020901781.md): Computer · inoperative · Feb 8, 2024 · N6704Z · Boeing 757232 > SHIP 6704 -ATB- DUE TO TCAS INOP. UNABLE TO CONTINUE DUE TO THEATER RESTRICTIONS. CORRECTIVE ACTION: REPLACED TCAS COMPUTER. - [SDR AALA202310025988](https://openairdocs.org/sdr/AALA202310025988.md): Control Panel · warning message · Sep 30, 2023 · N753US · Airbus A319112 > AIRCRAFT WAS GROUNDED: TCAS AURAL ALERT "TCAS SYSTEM TEST OK" CONTINUES IN FLIGHT EVERY 15-30 SECONDS, BURNING ELECTRICAL ODOR FROM TCAS BOX PULLED CB K10. MAINTENANCE REPLACED ATC/TCAS CONTROL PANEL (AALA202310025988) PER AMM 34-52-10 AND TCAS PROCESSOR PER A - [SDR DALA2023090807358](https://openairdocs.org/sdr/DALA2023090807358.md): Unknown · unknown · Sep 8, 2023 · N355NW · Airbus A320212 > SHIP 3255 NAV TCAS ECAM MSG ON TAXI IN. CORRECTIVE ACTION: PERFORMED NAV TCAS BITE TEST PER A320 AMM 34-43 TEST PASSED. NO 30 DAYS HISTORY A/C OK TO SERVICE. (4172962) - [SDR UIEA2023080800774](https://openairdocs.org/sdr/UIEA2023080800774.md): Unknown · unknown · Aug 8, 2023 · N482MC · Boeing 747443 > TCAS INOP(
PERFORMED TCAS OPS CHECK. OPC CHECK GOOD. PERFORMED TCAS GROUND TEST, TEST PASSED. PERFORMED LRU ATC LT & RT TEST, TEST GOOS IAW B747 AMM 34-45-00. TCAS SYS OPS NORMAL.
) - [SDR UIEA2023061400639](https://openairdocs.org/sdr/UIEA2023061400639.md): Computer · unknown · Jun 13, 2023 · N482MC · Boeing 747443 > AT 2000 FT AFTER TAKEOFF, EICAS MSG "TCAS OFF" WHILE TRANSPONDER PROPERLY SET. ATC REPORTED BEING UNABLE TO SEE US ON THE RADAR. ALL CIRCUIT BREAKERS IN AND NO OTHER EICAS MESSAGES.(REMOVED AND REPLACED TCAS COMPUTER PER TASK 34-45-00. TCAS GROUND TEST PASS - [SDR CALA2023051101453](https://openairdocs.org/sdr/CALA2023051101453.md): Computer · failed · May 10, 2023 · N78005 · Boeing 777224 > TCAS FAIL AFTER TAKEOFF INTERROGATED MAT AND PERFORMED TCAS SYSTEM TEST, FOUND MX MESAGE FAULTS PRESENT AT THIS TIME, OPS CHECK GOOD. PARTS USED: 34-49943 TCAS NO INPUT FROM RIGHT RAD ALT TRANSCIEVER. 29-3445-9-0009,QTY:1 TROUBLESHOT REF FIM 34-45-814, REMOV - [SDR 2023F00083](https://openairdocs.org/sdr/2023F00083.md): Unknown · unknown · Mar 16, 2023 · Boeing 7378Q8 > TCAS FAIL ON GROUND. FLIGHT CANCELLED. CORRECTIVE ACTION: FAULT ISOLATION PERFORMED TH THE TCAS TOP ANTENNA IAW FIM 34-45 TASK 803 AND HAS BEEN FOUND CORROSION IN CONNECTOR. PERFORMED CLEANING OF CONNECTOR IAW 34-45 TASK 805 ITEM F (3)(B) OPERATIONAL TEST SATI - [SDR 7C7A2023011730002](https://openairdocs.org/sdr/7C7A2023011730002.md): Relay · failed · Jan 13, 2023 · N893EA · Dhav DHC8106 > TCAS INOP DURING CRUISE, DEFERRED TCAS SYSTEM. REPLACED RELAY 3452-K6 FOR FIX - [SDR UIEA2023011200016](https://openairdocs.org/sdr/UIEA2023011200016.md): Tcas System · failed · Jan 11, 2023 · N860GT · Boeing 7478F > DUAL TCAS SYSTEM FAILURE AT CRUISE. CAN'T ENTER CHINESE AIRSPACE WITHOUT TCAS. AIR RETURN TO ICN. R & R RT CMC & OPS & SYS TEST OK IAW AMM 45-10-00/501. PERFORMED TCAS OPS & TCAS INTERFACE TEST, TEST OK IAW AMM 34-45-00/501. - [SDR 7C7A2022121300038](https://openairdocs.org/sdr/7C7A2022121300038.md): Controller · failed · Dec 7, 2022 · N893EA · Dhav DHC8106 > TCAS FAIL. TCAS CONTROLLER WAS CHANGED - [SDR 7C7A2022120700034](https://openairdocs.org/sdr/7C7A2022120700034.md): Processing Unit · failed · Dec 7, 2022 · N893EA · Dhav DHC8106 > TCAS FAILED. - [SDR 9JLA2022091530493](https://openairdocs.org/sdr/9JLA2022091530493.md): Tcas System · failed · Sep 6, 2022 · N561MT · Cessna 560XL > THE FLIGHT CREW REPORTED THAT DURING PREFLIGHT CHECKS FINDING THE TCAS SYSTEM FAILED. THE SYSTEM WOULD NOT EVEN TEST. THE TCAS SYSTEM FAULT WAS DEFERRED ON MEL 34-45-01-00A. DURING THE MAINTENANCE EVENT, THE MAINTENANCE TEAM REMOVED AND REPLACED THE TCAS PROCE - [SDR CALA2022083102231](https://openairdocs.org/sdr/CALA2022083102231.md): Skin · none · Aug 30, 2022 · N14120 · Boeing 757 > SUPPORT TASK - LOWER TCAS ANTENNA 4 EACH DOME NUTS FAIL BOND CHE CK. TRANSCRIBED FROM HAECO GSO NR 9284527. ALL WORK COMPLETED IAW HAECO PROGRESSIVE REO G24002. PERMANENT REPAIR TIME INTERVALS: 63,200 TOTAL FLIGHT CYCLES, INSPECTION IN TERVAL: TBD DTE DUE DA - [SDR UIEA2022071500765](https://openairdocs.org/sdr/UIEA2022071500765.md): Antenna · fault message · Jul 14, 2022 · N409MC · Boeing 74747UF > TCAS STATUS MESSAGE (REMOVED AND REPLACED TCAS COMPUTER AND TCAS LOWER ANTENNA IAW AMM 34-45-01 AND 34-45-02 BOTH OPS CHECKED& GOOD
) - [SDR 9JLA2022031524161](https://openairdocs.org/sdr/9JLA2022031524161.md): Tcas System · failed · Mar 6, 2022 · N546DH · Lear 45LEAR > THE FLIGHT CREW REPORTED THAT THE TCAS SYSTEM FAILED PREFLIGHT CHECKS. OPERATIONS WERE CONTINUED PER MEL 34-45-02 CAT C. AT CORRECTIVE ACTION THE MAINTENANCE TEAM REMOVED AND REPLACED THE TCAS PROCESSOR WITH REPAIRED UNIT. OPS CHECKS WERE SATISFACTORY AND THE - [SDR VNAA202201289992](https://openairdocs.org/sdr/VNAA202201289992.md): Doubler · corroded · Jan 28, 2022 · N537EA · Cndair CL6002C10 > LOWER TCAS ANTENNA INTERNAL DOUBLER IS CORRODED. - [SDR 9JLA2021120612616](https://openairdocs.org/sdr/9JLA2021120612616.md): Tcas System · defective · Dec 1, 2021 · N887PC · Raythn HAWKER900XP > THE FLIGHT CREW REPORTED ON FLIGHT LEG #2 THE TCAS FAIL INTERMITTENT ON PRIMARY FLIGHT DISPLAY. THE MAINTENANCE TEAM TROUBLESHOT AND DETERMINED THE TCAS RECEIVER WAS DEFECTIVE. THE DEFECTIVE UNIT WAS REMOVED AND AN OVERHAULED UNIT WAS INSTALLED. OPS CHECKS WER - [SDR UIEA2021071601576](https://openairdocs.org/sdr/UIEA2021071601576.md): Control Panel · failed · Jul 15, 2021 · N1409A · Boeing 767306 > TCAS/ ATC CONTROL PANEL FAILED, RELEASED SMOKE FROM DISPLAY. REF L/P 1390638/ M8 SMOKE OR FUMES IN THE CABIN, INSP. REQUIRED.(REMOVED AND REPLACED TCAS/ATC CONTROL PANEL. OPS CHECK PASS. NO FAULTS AT THIS TIME IAW B767-300 AMM 34-53-02.
/LP 1390638/ - [SDR 9JLA2021080425522](https://openairdocs.org/sdr/9JLA2021080425522.md): Comms Unit · failed · Jul 8, 2021 · N445N · Lear 45LEAR > THE FLIGHT CREW REPORTED AN "ADS-B FAIL" MESSAGE ON BOTH RTU UNITS AND "TCAS FAIL" MESSAGES ON MFD. WHEN USING BOTH RTS'S ON TRANSPONDER 1, RTU 2 SCREEN REVERTS TO DASHES "------". THE MAINTENANCE TEAM REMOVED THE NO1 COMMUNICATIONS UNIT AND INSTALLED REPAIRED - [SDR 9JLA2022042624561](https://openairdocs.org/sdr/9JLA2022042624561.md): Tcas System · failed · Apr 30, 2021 · N64LV · Cessna 560CESSNA > THE FLIGHT CREW REPORTED THAT UPON POWER UP THE TCAS FAILED INITIALIZATION. THE BASE MAINTENANCE TEAM DETERMINED THE TCAS PROCESSOR HAD FAILED. THE TCAS UNIT WAS REMOVED AND A TESTED TCAS UNIT WAS INSTALLED. OPS CHECKS WERE SATISFACTORY AND THE AIRCRAFT WAS RE - [SDR SWIA2021072259681](https://openairdocs.org/sdr/SWIA2021072259681.md): Antenna · corroded · Apr 20, 2021 · N790SK · Cndair CL6002C10 > * TCAS ANTENNA HAS CORROSION INTERNALLY AROUND CANNON PLUG CUTOUT AT APROX. FS295.00 STR.27 (C-CHECK RO 7/20/2021) REMOVED AND REPLACED TCAS INNER CHANNEL AT FS295, STGR 27. REF. CRJ700 SRM 51-42-21-001-001-A01 & DWG#SH670-30023 REV G. COMPLIED 51-900-1 - [SDR CALA2021033000399](https://openairdocs.org/sdr/CALA2021033000399.md): Transceiver · failed · Mar 30, 2021 · N465UA · Airbus A320232 > BOTH XPDR SYS FAILED AIR RETURN TO DENDUE TO INTL FLT TCAS FAULT DISPLAYED AT ENGINE START. REF TSM TASKS 34-43-00-810-820 AND 34-43-00-810-821-A, REF LMC LP 6055083 FOR GUIDANCE TO REPLACE TCAS COMPUTER. ACCOMPLISHED BITE TEST OF INSTALLED TCAS COMPUTER IAW A - [SDR A6WA202103227722](https://openairdocs.org/sdr/A6WA202103227722.md): Antenna · detached · Mar 21, 2021 · N431AW · Cndair CL6002B19 > 3819 - THOUGHT AT FLIGHT LEVEL 330 MAIN CABIN DOOR SEAL FAILED, INITIALLY HELD PRESSURE THEN CABIN STARTED TO CLIMB, DESCENDED TO FLIGHT LEVEL 200 THEN COULDN'T HOLD PRESSURE. FOUND ANTENNA ABOVE FLIGHT DECK SEPARATED FROM FUSELAGE. TCAS DIRECTIONAL - [SDR HNAA2021030200066](https://openairdocs.org/sdr/HNAA2021030200066.md): Relay · failed · Mar 1, 2021 · N652RS · Emb EMB145LR > DURING T/O ROLL AT ABOUT 30KTS, GPWS, TCAS, TERRAIN INOP EICAS MESSAGES WITH T/O CONFIG WARN WITH NO RELATED ORAL WARNING FACT 01MAR21 17:03 CLT C/N/D, R&R'D RELAY K0212 FOR PRECAUTION. C/W SELF TEST OF GPWS, TCAS AND T/O CONFIG. ALL TESTS PASS. OPS CHECK - [SDR FDEA202102260478](https://openairdocs.org/sdr/FDEA202102260478.md): Iru · malfunctioned · Feb 26, 2021 · N745FD · Airbus A300B4622R > PDIS 745 34-45 3202 26FEB21 MEM OPEN U LOGPAGES:366120 AT APPROXIMATELY 40 KNOTS ON TAKEOFF ROLL @ KMEM, F/O LOST ADI PRESENTATION, #2 YAW DAMPER DISENGAGED, AND WE REC D ECAM IRS #2 FAULT MESSAGE. ABORTED TAKEOFF AND PERFORMED QRH PROCEDUR - [SDR ASMF20200122001](https://openairdocs.org/sdr/ASMF20200122001.md): Antenna · failed · Nov 19, 2019 · N128AM · Boeing 7879 > AIRCRAFT RETURNED TO PLATFORM DUE TO DURING TAXING BEFORE START THE TAKEOFF, THE TCAS LT AND TCAS RT MESSAGES WERE SHOWN, SO MAINTENANCE PERSONNEL PERFORMED RESET CONTINUING FAILURE. THE ANTENNA WAS REPLACED IAW AMM DMC-B787-A-34-42-05-00A-720-A, ALL CORRECT - [SDR AALA201910049006](https://openairdocs.org/sdr/AALA201910049006.md): Tcas System · malfunctioned · Oct 3, 2019 · N342PM · Boeing 737823 > AIRCRAFT WAS GROUNDED: PILOT REPORTS DURING CLIMB OUT TCAS FAIL ON ND. STARTED WORKING JUST PRIOR TO DESCENT. OPS NORMAL. MAINTENANCE TROUBLESHOT SYSTEM, PERFORMED TEST, COULDNT DUPLICATE DISCREPANCY. NO FAULTS NOTED AT THIS TIME IAW FIM 34-45-00. OK FOR SERV - [SDR CALA2019092301626](https://openairdocs.org/sdr/CALA2019092301626.md): Computer · inoperative · Sep 23, 2019 · N77535 · Boeing 737824 > TCAS FAIL FLAG ON NAVIGATION DISPLAY SHOWS WITH ATC TRANSPONDER SELECTOR AT TA AND SHOWS WITH SELECTOR AT TA/RA FLAG DISPLAYED IN POSITION 1 AND POSITION 2 REPLACED TCAS COMPUTER OPS OK. PARTS UPDATE. ROTABLE PARTS CHANGE WAS INDICATED - TT # 1079731 SN OFF 2 - [SDR DALA2019090905207](https://openairdocs.org/sdr/DALA2019090905207.md): Computer · malfunctioned · Sep 6, 2019 · N362NB · Airbus A319114 > SHIP 3162 - DIV - TO MIA DUE TO TCAS FAULT AT CRUISE. ECAM WARNING: NAV TCAS FAULT / CREW DECISION TO DIVERT. CORRECTIVE ACTION: REPLACED TCAS COMPUTER. - [SDR IPXA2019072544878](https://openairdocs.org/sdr/IPXA2019072544878.md): Computer · malfunctioned · Jul 23, 2019 · N577UP · Boeing 74744AF > INSPECTION TYPE:N/A ATB- XPNDR 1 IN TA/RA SHOWED TCAS OFF, SWITCHED TO XPNDR 2 IN TA/RA SHOWED TCAS OFF. ATC COULD NOT SEE US. CYCLED BACK AND FORTH SEVERAL TIMES IT DID NOT WORK.NO FAULT FOUND. OPS TEST PER AMM 34-45-00-715-001-004 TEST OK. R/R TCAS COMPUTER Next page: https://openairdocs.org/jasc/3445/reports.md?page=2 ## The whole list in SQL Runs in DuckDB 1.2 or later on the release's Parquet files over HTTPS: ```sql 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 = '3445' ORDER BY difficulty_date DESC ``` This list as a web page: https://openairdocs.org/jasc/3445/reports --- OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.