JASC 7520

Service difficulty reports · 328

Reports filed under 7520 · Engine Cooling 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 = '7520'
  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 YENA2026082400696Warning Message · illuminatedFLT 72, EDI-JFK. (ETOPS) AFTER LANDING, ENG 2 TURB COOL FAULT. CAUTION MSG ( TCC/TACC VALVE ). OPENAug 21, 2026 · N2193J · Airbus A321271NXSDR SWAA2026081028117Bracket · crackedNR 1 ENGINE LPTACC LOWER MANIFOLD SUPPORT BRACKET AT 9 O'CLOCK POSITION WAS CRACKED AT FWD ATTACH POINT. R & R NR 1 ENGINE LPTACC LOWER MANIFOLD SUPPORT BRACKET AT 9 O'CLOCK POSITION IAW AMM 75-24-03Aug 6, 2026 · N8893L · Boeing 7378SDR SWAA2026081089026Bracket · crackedNR 1 ENGINE, LPTACC LOWER MANIFOLD SUPPORT BRACKET JUST BELOW THE 9 O'CLOCK POSITION WAS CRACKED AT FWD ATTACH POINT. R & R NR 1 ENG, LPTACC LOWER MANIFOLD SUPPORT BRACKET JUST BELOW THE 9 O'CLOCK POSITION IAW AMM 75-24-03.Aug 6, 2026 · N8893L · Boeing 7378SDR SWAA2026081087653Bracket · crackedNR 1 ENGINE, LPTACC LOWER MANIFOLD SUPPORT BRACKET AT 3 O'CLOCK POSITION WAS CRACKED AT FWD ATTACH POINT. R & R THE NR 1 ENG LPTACC LOWER MANIFOLD SUPPORT BRACKET AT 3 O'CLOCK POSITION IAW AMM 75-24-03.Aug 6, 2026 · N8893L · Boeing 7378SDR SWAA2026072344101Valve · leakingNR 1 ENGINE STEADY FUEL LEAK AFTER ENGINE START. REMOVED AND REPLACED HTPACC PER AMM 75-21-01.Jul 22, 2026 · N8509U · Boeing 7378H4SDR AALA202606123906Line · disconnectedAIRCRAFT WAS GROUNDED: AN EMERGENCY WAS DECLARED AND THE AIRCRAFT RETURNED TO LAX DUE TO THE FLIGHT CREW REPORTING THAT DURING CLIMB OUT AN ENGINE 1 TIP CONTROL FAULT OCCURRED. THE AIRCRAFT LANDED SAFELY AT LAX WITHOUT FURTHER INCIDENT. UPON INSPECTION OF NR Jun 10, 2026 · N466AN · Airbus A321253NXSDR UIEA2026032700108Switch · shortedDURING PREPARATION FOR ENG #2 COOLING BAROMETRIC SWITCH, OPS CHK FOUND DAMAGE TO A SCREW AT NACELLE ZONE VENT SOV. AFTER INVESTIGATING, WE FOUND THAT THIS SCREW WAS TOUCHING THE FEEDER CABLES. TWO CABLES GOT DAMAGED AND PRODUCED ARCING TO THE VALVE HOUSING SCRMay 12, 2026 · N1619A · Boeing 7673Y0SDR DALA2026031001643Valve · bindingSHIP 9522 CREW REPORTS STRONG DIRTY SOCK SMELL IN BACK OF AIRCRAFT. CORRECTIVE ACTION: FOUND #2 ENG SOURCE R/R #2 ENG BUFFER AIR VALVE FOUND IT BINDING & STIFF IN REF B717 AMM 75-22. CKS GOOD. (1485009)Mar 8, 2026 · N963AT · Boeing 717200SDR BAGA2026021900004Shutoff Valve · failedRIGHT NEACELLE OVERHEAT CAUTION MESSAGE IN FLIGHT. CLEARED AFTER RUNNING CHECKLIST. GOT MESSAGE AGAIN AFTER GOING BACK TO CLIMB POWER. RETURNED TO FIELD. REMOVED AND REPLACED BUFFER SHUT OFF VALVE. OPS AND LEAK CHECKS GOOD.Feb 16, 2026 · N219BZ · Airbus BD5001A11SDR YENA2025101601041Valve · faultedFLT#1178, LAS-BOS. (ETOPS) CR 2 ALERT (APPROVAL REQUIRED FOR RESOLUTION) ENG 2 TURB COOL FAULT AFTER LANDING ( TCC/TACC VALVE ); REMOVED AND REPLACED ENG 2 TURBINE CASE COOLING AIR VALVE IAW AMM 75-24-01. OPS CK GOOD. PLACARD REMOVED, MX-4 UPDATED, MCC NOTIFIOct 16, 2025 · N2193J · Airbus A321271NXSDR BAGA2025081100004Shutoff Valve · failedOIL ODOR IN FWD CABIN. R & R RT ENGINE BAV & ENGINE BUFFER AIR SHUTOFF VALVE. OPS CHECKED GOOD. NO MEDICAL ATTENTION NEEDED FOR PAX OR CREW. EMERGENCY WAS DECLARED.Aug 8, 2025 · N220BZ · Airbus BD5001A11SDR SWAA2025072895274Valve · leakingFUEL LEAKING #2 ENGINE COWLING<[01] R-R?D #2 ENG HPTACC VALVE <BR>& LEAK/OPS CHECK GOOD PER AMM 75-21-01<BR><BR>E142282Jul 24, 2025 · N8310C · Boeing 7378H4SDR IPXA202507074238Link · wornWORN OUT SUPPORT LINK, NO.2 ENG R/H HPT CASE COOLING FWD DUCT UPPER SIDE, NEAR FUEL SUPPLY LINE. (REPLACE) OK TO WORKJul 5, 2025 · N325UP · Boeing 76734AFSDR IPXA2025070762480Manifold · brokenBROKEN - MANIFOLD, NO.2 ENG LPT CASE COOLING, NEAR 11:00 AREA. I.A.W. AMM 75-24-03-004-050-H00 AND 75-24-03-404-037-H00, REV.145, REPLACED THE LPT COOLING MANIFOLD OF NO.2 ENGINE. JOB COMPLETED AND CONDITION CHECK NORMAL.Jul 4, 2025 · N325UP · Boeing 76734AFSDR AALA202507020782Control Valve · faultedAIRCRAFT WAS NOT GROUNDED: AN EMERGENCY WAS DECLARED AND THE AIRCRAFT RETURNED TO LAX DUE TO THE FLIGHT CREW REPORTING AN ENGINE #2 TIP CONTROL FAULT ECAM MESSAGE DURING CLIMBOUT WHICH ALERTED APPROXIMATLEY 8 TIMES. THE AIRCRAFT LANDED SAFELY AT LAX WITHOUT FUJun 30, 2025 · N411AN · Airbus A321253NXSDR AALA202507010782Warning Message · illuminatedAIRCRAFT WAS NOT GROUNDED: AN EMERGENCY WAS DECLARED AND THE AIRCRAFT RETURNED TO LAX DUE TO THE FLIGHT CREW REPORTING AN ENGINE #2 TIP CONTROL FAULT ECAM MESSAGE DURING CLIMBOUT WHICH ALERTED APPROXIMATLEY 8 TIMES. THE AIRCRAFT LANDED SAFELY AT LAX WITHOUT FUJun 30, 2025 · N411AN · Airbus A321253NXSDR SWAA2025070186683Valve · faulted#1 ENG EGT ROSE RAPIDLY. #1 ENG EGT YELLOW ALERT FLASHED FOR 30 SECONDS. RETARTED #1 ENG THROTTLE; EGT RETURNED TO NORMAL R/R HPTACC VALVE PER AMM 75-21-01 NO LEAKS; TESTS PASSEDJun 29, 2025 · N239WN · Boeing 7377H4SDR I5PA2025061068802Actuator · leakingFOUND FUEL LEAK AT THE LH ENG TURBINE COOLING ACTUATER. R/R LH ENG TURBINE COOLING ACTUATER (TCA) PER AMM. OPS CHECK NORMAL PER AMM NO LEAKS FOUND.Jun 10, 2025 · N688SL · Boeing 757230SDR SWAA2025042124867Support Bracket · cracked#2 ENGINE LPTACC COOLING AIR TUBE ANGLE SUPPORT BRACKET SEPARATED AT FWD EDGE AT THE 4 0 CLOCK POSITION <[01]. REMOVED AND REPLACED #2 ENGINE LPTACC COOLING AIR TUBE ANGLE SUPPORT BRACKET @ 4 O CLOCK POSITION IAW PPBU 71-00-02.Apr 15, 2025 · N472WN · Boeing 7377H4SDR YENA2025041400397Check Valve · wornFLT#1124, LAX-JFK. (ETOPS) ON DESCENT PASSING FL180 ENG 2 AIR SYS FAULT ECAM ANN AND QRH PROCEDURE COMPLETED -EVENTUALLY CLEARED; REF TSM 75-20-00-810-818-A #2 ENG BUFFER AIR CHECK VALVE WAS FOUND SEVERELY WORN REPLACED #2 ENG BUFFER AIR CHECK VALVE IAW AMM 7Apr 11, 2025 · N2142J · Airbus A321271NXSDR YENA2025040700369Sensor · failedFLT#623, JFK-LAX. (ETOPS) 'ENG 2 AIR SYS FAULT ECAM ATCRUISE FL 340; REMOVED AND REPLACED BUFFER AIR VALVE PRESSURE SENSOR FIN 4057KS. REF AMM 75-26-22-400-801-A. REF HIGH POWER ASSURANCE ON ENG #2 LOG PG 4190431-1 (PERFORMED A HIGH POWER ASSURANCE TEST ON #2Apr 6, 2025 · N2142J · Airbus A321271NXSDR YENA2025040400365Buffer Valve · failedFLT#2073, JFK-LAX. (ETOPS) 'ON DESCENT ENG 2 AIR SYS FAULT; ACCOMPLISHED TSM 75-26-00-810-818A STEP 7 REMOVED AND REPLACED VALVE BUFFER AIR PER AMM 75-26-02-000-801 AND 75-26-02-400-801, LEAK CHECK AND ENG ABOVE IDLE 80% N1 REQUIRED (PERFORMED TEST 17 TEST ABOApr 2, 2025 · N2142J · Airbus A321271NXSDR NACA2025032800002Cooling Duct · cracked#2 ENG MANIFOLD COOLING DUCT CRACK AT 7 AND 12 OCLOCK POSIITION. REPLACED 2 EA LPT COOLING AIR MANIFOLDMar 28, 2025 · N321CM · Boeing 767323SDR NACA2025031100012Manifold · crackedRIGHT ENGINE LPD MANIFOLD COOLING SKIN CRACK LEFT SIDE. REPLACED THE #10 LPT COOLING AIR MANIFOLDMar 11, 2025 · N321CM · Boeing 767323SDR DALA2025030501715Valve · stiffSHIP 9519 -ATB/FUME/DE- DURING CLIMB OUT AT ABOUT 10K FEET, THE FLIGHT CREW DECLARED AN EMERGENCY WITH ATC AND RETURNED TO MEM DUE TO UNKNOWN ODOR THROUGHOUT THE CABIN. CORRECTIVE ACTION: MAINTENANCE DISCOVERED THAT THE BUFFER AIR VALVE ON THE #2 ENGINE WAS VEMar 4, 2025 · N960AT · Boeing 717200SDR AALA202410285317Duct Seal · leakingAIRCRAFT WAS GROUNDED: AFTER TAKEOFF INTERMITTENT ENGINE FIRE INDICATION ENGINE NUMBER2. DURING EXECUTION OF COMPANY PROCEDURE ENGINE FIRE INDICATIONRESOLVED BY SELECTING AFFECTED ENGINE THRUST LEVER TO IDLE.CREW OBSERVED ELEVATED NACELLE TEMPERATURE ON AFFECTOct 23, 2024 · N704US · Airbus A319112SDR IPXA2024062589422Strap · crackedSTRAP, NR 1 ENGINE LT HPT COOLING DUCT REAR FRAME FLANGE SUPPORT BRACKET RETAINING. IAW AMM 70-50-00-912-001-H00, REV.142, REPLACED THE STRAP WITH NEW & TORQUED THE NUTS. 2. COMPLETED THIS JOB AND CONDITION CHECK SATISFACTORY. 3. ATTACHMENTS ARE UPLOADED.Jun 11, 2024 · N353UP · Boeing 76734AFSDR HALA20240513131Thermostat · faultedETOPS - ON DESCENT # 2 PACK OVERHEAT ECAM DISPLAYED FOLLOWED BY ENG 2 BLEED FAULT ECAM. COMPLETED ECAM ACTIONS. PERFORMED TSM 36-11-81-861-AO1.REMOVED AND REPLACED #2 ENG FAN AIR VALVE CONROL THERMOSTAT (FIN 5HA2) PER AMM 36-11-43. OPS AND LEAK CHECK GOOD. OK May 11, 2024 · N360HA · Airbus A330243SDR NACA2024050800002Switch · failedFOUND THE BAROMETRIC SWITCH S495 MALFUNCTION. REMOVED AND REPLACED #2 ENG BAROMETRIC SWITCH S495 AS PER AMM 75-23-04. PART IS UNKNOWN TO TRAX.May 8, 2024 · N563NC · Boeing 7673BGSDR NACA2024050700005Valve · failedL NAC COOLING VALVE TEST FAIL. REMOVED AND REPLACED THE NAC COOLING VALVE AS PER B767-300 AMM 75-23-02. PART IS UNKNOWN TO TRAX.May 7, 2024 · N563NC · Boeing 7673BGSDR HALA20240506126Precooler · failedETOPS - AIR ENG 1 BLEED HI TEMP DURING DESCENT. REMOVED AND REPLACED #1 ENG PRE-COOLER PER AMM 36-11-42. LEAK CHECK GOOD. OK FOR SVC.May 3, 2024 · N389HA · Airbus A330243SDR NACA2024043000003Valve · failedSTATUS ON FINAL RH ENG A/O VALVE. REPLACED AIR/OIL VALVE IAW AMM 79-21-09 IDLE LEAK TEST GOOD.Apr 30, 2024 · N565NC · Boeing 7673BGSDR NACA2024042000003Warning Message · illuminatedRH ENG A/O VALVE STATUS MESSAGE. PERFORME BITE TEST, OPS CHECK GOOD NO MSG IAW FIM 71-01 FT 803.Apr 20, 2024 · N30565 · Boeing 7673BGSDR NACA2024042000002Valve · failedRH ENGINE A/O VALVE STATUS MESSAGE. REPLACED AIR/OIL VALVE IAW AMM 79-21-09 OPS CHECK AND LEAK CHECK GOOD.Apr 20, 2024 · N565NC · Boeing 7673BGSDR ASAA2023102945873Unknown · unknownDURING TASK CARD 78273000 FOUND #2 ENGINE ECONOMIC RECENT FAULT 75-10362 "THE HPTACC POSITION SIGNAL IS OUT OF RANGE. GROUNDED - YES. REACCOMPLISHED TC 78273000. FAULT NOT PRESENT. THIS CLEARS PLT DEFERRAL. SEAMC ANDY NOTIFIED.Oct 29, 2023 · N481AS · Boeing 737990ERSDR ASAA2023102345816Unknown · unknownFOUND 4 ECONOMIC FAULTS ON #2 ENG HPTACC SIGNALS RECORDED FAULTS: 75-10462, 75-20412, 75-10412, 75-10362. GROUNDED - YES. ON DEFERRAL.Oct 23, 2023 · N493AS · Boeing 737990ERSDR ASAA2023102345792Unknown · unknownWHILE PERFORMING TASK CARD 78273000, FOUND ENGINE 2 FAULTMSG NBR: 75-10462 THE HPTACC DEMAND AND POSITION SIGNALS DISAGREE. ECONOMIC. GROUNDED - YES. ON DEFERRAL.Oct 23, 2023 · N506AS · Boeing 737890SDR ASAA2023092245252Unknown · unknown#2 ENGINE DRIPPING FUEL. OPENED #2 FAN COWL PER B737-800 AMM 71-11-02. INSPECTED ENGINE DRAINS. FOUND HPTACC VALVE DRIPPING.DURING IDLE ENGINE RUN, #2 ENGINE HPTACC VALVE LEAK RATE IS 3 DPM. DEFERRED PER AMM 71-71-00-200-801-F00. REPAIR REQUIRED WITHIN 25 FLIGSep 22, 2023 · N590AS · Boeing 737890SDR ASAA2023091745220Unknown · unknownREF LP 60608120. AFTER PERFORMING IDLE RUN TEST FOR STARTER INSTALLATION AND CLOSING FAN COWLS FOUND STEADY FUEL DRIPPING FROM DRAIN AT BOTTOM OF COWLING #2 ENGINE. GROUNDED - YES. ON DEFERRAL.Sep 17, 2023 · N409AS · Boeing 737990ERSDR ASAA2023081644639Unknown · unknownWHILE ACCOMPLISHING T/C78273000 FAULT CODE 75-10462 APPEARED ON #2 ENGINE. THE HPTACC DEMAND AND POSITION SIGNALS DISAGREE, ECONOMIC FAULT MUST BE CORRECTED IN 500 HRS. GROUNDED - YES. ON DEFERRAL.Aug 16, 2023 · N493AS · Boeing 737990ERSDR ASAA2023072844315Unknown · unknownWHILE PERFORMING T/C 78273000 FOUND SHORT TIME FAULT 75-30602 THE TBV POSITIONS SIGNALS DISAGREE ON #2 ENG. GROUNDED - YES. (RESOLVED ON W/O: 1963318 TASKCARD: N/R-00003 ) REFERENCE DEFECT 60520579, CLEARS PLT SEAMC ASHRAF NOTIFIED. LP 60520579: PERFORMED FIJul 28, 2023 · N419AS · Boeing 737990ERSDR ASAA2023072544233Unknown · unknownREFERENCE TASK CARD 78273000, #2 ENGINE HAS LONG TIME FAULT NUMBER 75-10592, THE TBV POSITION SIGNAL IS OUT OF RANGE. GROUNDED - YES. ON DEFERRAL.Jul 25, 2023 · N419AS · Boeing 737990ERSDR ASAA2023071744079Unknown · unknownWHILE ACCOMPLISHING T/C 78273000 FOUND ENG #2 ECONOMIC FAULT 75-10362 THE HPTACC POSITION SIGNALS IS OUT OF RANGE. GROUNDED - YES. ON DEFERRAL.Jul 17, 2023 · N512AS · Boeing 737890SDR ASAA2023071744078Unknown · unknownWHILE ACCOMPLISHING T/C 78273000 FOUND ENG #2 ECONOMIC FAULT 75-30412. THE HPTACC POSITION SIGNALS DISAGREE. GROUNDED - YES. ON DEFERRAL.Jul 17, 2023 · N512AS · Boeing 737890SDR ASAA2023072174077Unknown · unknownWHILE ACCOMPLISHING T/C 78273000 FOUND ENG #2 ECONOMIC FAULT 75-20462. THE HPTACC DEMAND AND POSITION SIGNALS DISAGREE. GROUNDED - YES. ON DEFERRAL.Jul 17, 2023 · N512AS · Boeing 737890SDR ASAA2023061443694Unknown · unknown#1 ENGINE LONG TIME FAULT. MSG NBR 75-10591. THE TBV POSITION SIGNAL IS OUT OF RANGE. GROUNDED - YES. ON DEFERRAL.Jun 14, 2023 · N564AS · Boeing 737890SDR ASAA2023060643772Valve · faultyTECH SERVICE REQUEST. GE DIAGNOSTICS IS REPORTING #1 ENGINE HPTACC FAULTS WITH COORESPONDING TREND SHIFTS. PRI2CNR 20230606039 ENG S/N 802957. GROUNDED - YES. ACCPMLISHED ACTUATORS TEST AND CHECK FAULT HISTORY NO FAULTS FOUND. REF AMM 71-00-00-700-807-F00. ALTJun 6, 2023 · N583AS · Boeing 737890SDR DALA2023051703936Unknown · unknownSHIP 3230 #1 ENGINE FAILED FADEC MOTORING TEST DURING PREFLIGHT. CH 1B FAULT-LPTC VLV. CORRECTIVE ACTION: INSTALLED NEW LPTACC PER A320 AMM 75-22-10. (2770013)May 16, 2023 · N330NW · Airbus A320211SDR ASAA2023040842829Valve · leakingCREW REPORTS FUEL LEAK UNDER #2 ENGINE. GROUNDED - YES. REMOVED & REPLACE HPTACC OF ENG 32 IAW B737-800 AMM 75-21-01.Apr 8, 2023 · N506AS · Boeing 737890SDR ASAA2023032442586Valve · faultyREPLACE #1 TBV DUE TO HISTORY OF FAULTS. GROUNDED - YES. REPLACED J6 HARNESS REF 73-21-06. REPLACED TBV IN REF TO B737-800 AMM 75-23-01 LEAK OPS CHECK GOOD.Mar 24, 2023 · N563AS · Boeing 737890
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