JASC 7421

Service difficulty reports · 703

Reports filed under 7421 · Spark Plug/Igniter, 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 = '7421'
  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 2026FA0000783Spark Plug · separationDURING CRUISE FLIGHT, THE AIRCRAFT EXPERIENCED AN IMMEDIATE PARTIAL LOSS OF ENGINE POWER ACCOMPANIED BY SEVERE ENGINE ROUGHNESS. AN EMERGENCY WAS DECLARED, AND THE AIRCRAFT LANDED SAFELY WITHOUT FURTHER INCIDENT. POST-FLIGHT MAINTENANCE INSPECTION REVEALED THASep 23, 2026 · N1721G · Beech P35SDR I5PA2026083068807Igniter · wornETOPS SIGNIFICANT REPORT, RT ENGINE UPPER IGNITER PLUG WORN. REPLACED IGNITER PLUG IAW AMM.Aug 30, 2026 · N688SL · Boeing 757230SDR YENA2026082400697Igniter · faultedFLT 346, BCN-BOS. (ETOPS) NR 2 ENGINE IGN B FAULT, R & R ENG #2 IGN B IGNITER PLUG IAW AMM 74-21-01-400-801-A. OPS CHK OK."Aug 22, 2026 · N4073J · Airbus A321271NXSDR 2026F00175Igniter · burnedIGNITORS BURN THROUGH TO ELECTRICAL LEAD WITHIN 100 HOURS OF USE. HOT TURBINE COMBUSTION GASES ESCAPE THROUGH IGNITOR BODY TO BURN CONNECTION AND IGITOR LEAD. LEAD SEIZES IN PLACE AND CANNOT BE REMOVED WITHOUT BEING DESTROYED. IGNITOR FAILS, IGNITION LEAD Aug 13, 2026 · N510PR · Dhav DHC3SDR I5PA2026081019302Igniter · faultyRIGHT ENGINE IGNITION SYSTEM INOPERATIVE. REPLACED RT ENGINE IGNITER PLUGS IAW AMMAug 10, 2026 · N193AN · Boeing 757223SDR I5PA2026080819301Igniter · faultyLEFT ENGINE IGNITION SYSTEM INOPERATIVE. REPLACED LT ENGINE IGNITER PLUGS IAW AMM.Aug 8, 2026 · N193AN · Boeing 757223SDR YENA2026080500652Igniter · not reportedFLT 2220, LHR-JFK. (ETOPS) IGNITER PLUGS REQ REPLACEMENT; R & R IGNITER PLUGS IAW AMM 74-21-41, OPS CHKD NORMAL ACFT OK FOR SVC.Aug 5, 2026 · N4062J · Airbus A321271NXSDR SWAA2026080515446Igniter · faultedABORTED NR 2 ENGINE START. IGNITION, RT N1, STALLED AT APPROX 9% TEMP 550. ENGINE STARTED OK WITH START SWITCH IN BOTH, OK TO CONTINUE IAW MEL 74-1-04, SP1. NR 2 ENG POWER SUPPLY CABLES SWAPPED AT IGNITION EXCITERS IAW MEL, R & R LT & RT IGNITER PLUGS ON NAug 1, 2026 · N435WN · Boeing 7377H4SDR ECPR20260731002Spark Plug · crackedFOLLOWING DISCOVERY OF A CRACKED SPARK PLUG ON ANOTHER AIRCRAFT, A PRECAUTIONARY INSPECTION WAS CONDUCTED OF THE SPARK PLUG ON THIS AIRCRAFT AS IT WAS THE SAME LOT # AS A PREVIOUS SPARK PLUG FAILURE. VISUAL INSPECTION FOUND CRACKING AT A POINT BETWEEN THE SPAJul 30, 2026 · N8585Z · Piper PA28R201SDR 2026FA0000612Spark Plug · crackedSPARK PLUGS, TEMPEST: UPON REMOVAL, 4 OF THE 12 SPARK PLUGS, FOUND TO HAVE CIRCUMFERENTIAL CRACKS IN STEEL SHELL, LOCATED IN REDUCED ALL HOT CRIMP (SWAGE) SECTION BETWEEN THE MOUNTING GASKET SEAT & WRENCHING HEX. CRACKS ARE JAGGED & IRREGULAR, EXTEND AROUND A Jul 30, 2026 · N530JP · Mooney M20MSDR ECPR20260731001Spark Plug · crackedA SPARK PLUG WAS REPLACED DURING A SCHEDULED MAINTENANCE INSPECTION. DURING THE POST-MAINTENANCE OPERATIONAL CHECK, THE ENGINE SUDDENLY DEVELOPED ROUGHNESS AND A PARTIAL LOSS OF POWER. SUBSEQUENT INSPECTION FOUND THE SPARK PLUG HAD COMPLETELY SEPARATED INTO TWJul 27, 2026 · N555PU · Piper PA28161SDR 2026FA0000579Igniter · no testIGNITORS FAILED TO TESTJul 14, 2026 · N785MT · Cessna 525ASDR DALA2026061603614Igniter · faultyABORTED ENGINE START RIGHT ENGINE, STRONG FUEL SMELL IN CABIN. MAINT ADVISED START AGAIN ON BOTH IGNITORS, WITH NORMAL START INDICATIONS, AGIN STRONG FUEL SMELL IN CABIN, WITH PAX COMPLAINTS. REMOVED AND REPLACED #1 IGNITION EXCITER BOX IAW AMM B757 74-11. RJun 14, 2026 · N685DA · Boeing 757232SDR YENA2026051500458Igniter · faultedFLT 1107, JFK-LHR.(ETOPS) DURING ENGINE 1 START WE GOT MESSAGE ENG 1 IGN A FAULT; R/R ENG 1 IGNITER A & B IAW AMM 74-21-01. OPS CHK PASSED A/C OK FOR CON'T SVC.May 13, 2026 · N4058J · Airbus A321271NXSDR I5PA2026042319301Igniter · failedFLIGHT MGE410, LEFT ENGINE IGNITION SYSTEM INOP. REPLACED SYS 1 AND 2 IGNITERS.Apr 23, 2026 · N193AN · Boeing 757223SDR YENA2026042300424Exciter · faultedFLT# 1620. BOS-LHR. (ETOPS) "ENG 2 IGN B FAULT ( IGNITION SYSTEMS B) SYSTEM B ). REPLACED ENG 2 IGN EXICTER PER AMM 74-11-00 OPERATIONAL CHECK OKApr 21, 2026 · N4058J · Airbus A321271NXSDR CALA2026042415693Igniter · faultedON FIRST ENGINE START ATTEMPT ON LEFT ENGINE WITH ENGINE START IGNITER IN NO. 2 POSITION. NO ENGINE VALVE LIGHT WITH NO RISE IN EGT. ABORTED START WITH CHECKLIST FUMES DETECTED IN CABIN. SECOND START WITH IGNITORS IN BOTH WAS GOOD BUT WITH MORE FUMES IN CABIN Apr 20, 2026 · N684UA · Boeing 7673CBSDR I5PA2026033075710Igniter · wornFLIGHT MGE301, RIGHT ENGINE HUNG START. FOUND UPPER IGNITER PLUG WORN TO LIMITS. REPLACED IGNITER PLUG PER AMM.Mar 30, 2026 · N757QM · Boeing 75729JSDR YENA2026033000351Igniter · failedFLT 724 LAX-JFK (ETOPS), ENG 1 IGNITION A FAULT ( IGNITION SYSTEMS A) SYSTEM A ). REPLACED ENG 1 IGNITER PLUG IAW AMM 74-21-00 OPS CHK GOOD. THIS CLEARS THE MDDR. MX-4 UPDATED PLACARD REMOVED.Mar 28, 2026 · N2151J · Airbus A321271NXSDR I5PA2026032019304Igniter · faultedFLIGHT MGE301. LEFT ENGINE NO LIGHT OFF. R & R LEFT ENGINE NR 1 IGNITER IAW AMM.Mar 20, 2026 · N193AN · Boeing 757223SDR I5PA2026030719302Igniter · wornRIGHT ENGINE IGNITER PLUGS FOUND OUT OF LIMITS DURING INSPECTION. REPLACED RT IGNITER PLUGS PER AMM.Mar 7, 2026 · N193AN · Boeing 757223SDR YENA2025120901185Igniter · faultedFLT 2220, LHR-JFK. (ETOPS) ENG 2 ING B FAULT ON TOUCHDOWN, REMOVED AND REPLACED ENG NR 2 IGNITER PLUG B (LOWER) IAW AMM 74-21-01. OPS TESTED GOOD.Dec 7, 2025 · N4048J · Airbus A321271NXSDR YENA2025112601123Igniter · damagedFLT#2116, SFO-JFK. (ETOPS) "DMG FOUND TO LOWER IGNITER; REMOVED AND REPLACED LOWER IGNITER IAW AMM 74-21-01. OPS TEST OK."Nov 25, 2025 · N2169J · Airbus A321271NXSDR NACA2025101000006Igniter · wornNR 2 ENGINE UPPER IGNITER PLUG WORN BEYOND LIMITS. REMOVED AND REPLACED NR 2 UPPER IGNITER PLUG IAW AMM 74-21-02-004-001-N00 AND AMM 74-21-01-404-014-N00. OPS CHECK GOOD.Oct 10, 2025 · N567NC · Boeing 76733ASDR NACA2025101000005Igniter · wornNR 2 ENG LOWER IGNITER PLUG WORN BEYOND LIMITS. REMOVED AND REPLACED NR 2 LOWER IGNITER PLUG IAW AMM 74-21-02-004-001-N00 AND AMM 74-21-01-404-014-N00. OPS CHECK GOOD.Oct 10, 2025 · N567NC · Boeing 76733ASDR HALA20251002298Igniter · damagedETOPS - DURING T/C 321-724000-W2-1 FOUND ENG 2 LOWER IGNITER DAMAGED. REMOVED AND REPLACED IGNITER PER AMM 74-21-00. OPS TEST GOOD, OK TO CONTINUE.Oct 1, 2025 · N227HA · Airbus A321271NSDR NACA2025093000006Igniter · wornNR 1 ENG. SYS. 1 TOP IGNITION EXCITER PLUG IS WORN BEYOND LIMITS. IGNITER PLUG REPLACED IAW AMM 74-21-02-404-014-N00.Sep 30, 2025 · N567NC · Boeing 76733ASDR NACA2025092300001Igniter · wornNR 1 ENG IGNITOR PLUG FOR SYSTEM 2 (BOTTOM PLUG) IS WORN BEYOND LIMITS. IGNITER PLUG REPLACED IAW AMM 74-21-02-404-014-N00.Sep 23, 2025 · N567NC · Boeing 76733ASDR YENA2025009000907Igniter · faultedFLT#1908, CDG-JFK. (ETOPS) "MX SMOKE CLASS 2 MSG IN DISPLAY ( CLASS II MAINTENANCE MESSAGES DISPLAYED ON ECAM STATUS PAGE OF ECAM SYSTEM DISPLAY 2) FAULT(S) INDICATED BY SMOKE ); ACCOMPLISHED A/C SYS RESET/TEST IAW AMM 26-16-00-810-821-A.OPS CHK GOOD.NO FAULTSSep 1, 2025 · N2169J · Airbus A321271NXSDR YENA2025009000903Igniter · faultedFLT#2104, BOS-LGW. (ETOPS) "ECAM MSG ENG 2 IGN B FAULT ( IGNITION SYSTEMS B) SYSTEM B ); PER TSM 74-00-00-810-832-A RESET AND TESTED ENG 2 IGN B. NO FAULTS. NO TRAX HISTORY. NO AVAITAR HISTORY. MX-4 UPDATED PLACARD REMOVED ER GROUND VERICATION TEST OK.Sep 1, 2025 · N2169J · Airbus A321271NXSDR HALA20250825259Igniter · wornETOPS - DURING IGNITER SEGMENT INSPECTION, FOUND BOTTOM IGNITER PLUG WORN BEYOND LIMITS ON ENGINE #2. REMOVED AND REPLACED BOTTOM IGNITER PLUG PER AMM 74-21-01 ON ENGINE #2. OPS CHECK GOOD. OK TO CONTINUEAug 22, 2025 · N228HA · Airbus A321271NSDR HALA20250819254Igniter · faultedETOPS - ENG 1 A ING ECAM ON ENGINE START UP. REMOVED AND REPLACED LOWER IGNITER PLUG. PER AMM 74-21-01. OPS TEST BAD. FURTHER T/S REQUIRED. REMOVED AND REPLACED EXCITER PER AMM 74-11-01. OPS CHECK NORMAL. OK FOR SERVICE.Aug 18, 2025 · N215HA · Airbus A321271NSDR UOIA202506300001Spark Plug · faultedDURING CLIMB PILOT NOTICED LEFT ENGINE SOUNDED ROUGH AND DECIDED TO RETUN TO THE AIRPORT AS PRECAUTION. UPON EXAMINATION MAINTENANCE PERFORMED LEFT ENGINE COLD CHECK AND REPLACED CYLINDERS #1, #3, AND #5 TOP SPARK PLUGS AS PER LYCOMING OH MANUAL CHAPTER 4. PJun 30, 2025 · N903GD · Bnorm BN2A8SDR 2025FA0000428Spark Plug · brokenNR 4 EGT WAS NOTED TO BE HIGHER THAN BASELINE AND THE ENGINE WAS RUNNING ROUGH. MECHANIC REMOVED THE #4 PLUGS AND FOUND THE CENTER ELECTRODE ON THE BOTTOM PLUG WAS MISSING. TESTED THE PLUG AND IT DID NOT FIRE. BORESCOPE OF THE CYLINDER LOOKED OK. A NEW PLUG WAJun 26, 2025 · N176X · Beech A36SDR NACA2025062200001Igniter · inoperativeR ENG #1 IGNITOR INOP. REMOVED AND REPLACED RH IGNITOR PLUG IAW AMM 74-21-02 OPS CHECK OK IAW 74-00-00Jun 22, 2025 · N563NC · Boeing 7673BGSDR I5PA2025062219301Igniter · wornFLT NT: MGE 410. RT ENG ABORT START QRH PERFORMED. R & R RT ENG #1 AND #2 IGNITER PLUGS PER AMM 74-21-01. OPS TEST OK PER AMM 71-00-00/501.Jun 19, 2025 · N193AN · Boeing 757223SDR NACA2025061800001Igniter · no test#2 ENGINE #1 IGNITOR FAILED OPS CHECK. REMOVED AND REPLACED #2 ENGINE #1 IGNITOR PLUG IAW AMM 74-21-02Jun 18, 2025 · N565NC · Boeing 7673BGSDR HALA20250606163Igniter · failedETOPS - ENG 2 IGN A FAULT DURING START. REMOVED AND REPLACED IGN A IGNITER PLUG ON ENG 2 PER AMM 74-21-01. OPS CHECK GOOD. NO DEFECTS NOTED. OK FOR SERVICEJun 5, 2025 · N208HA · Airbus A321271NSDR YENA2025060400565Igniter · failedFLT#2261, BOS-MAD. (ETOPS) .'ENG2 IGN B FAULT DURING ENG 2 START (ENG STARTED NORMALLY AFTERWARDS) ( IGNITION SYSTEMS B) SYSTEM B ); REPLACED ENG 2 IGNITER PLUG A AND B IAW AMM 74-21-01 OPS CHECK GOOD THIS CLEARS THE MDDR MX-4 UPDATED PLACARD REMOVEDJun 4, 2025 · N4076J · Airbus A321271NXSDR SWAA2025060277156Exciter · inoperativeABORTED ENGINE START #1 DUE TO NO LIGHT OFF ON THIRD ATTEMPT; CABIN CREW (F.O.) NOTED FIREBALL AND SMOKE IN TAILPIPE INSPECTED #1 ENGINE PER FIM 71-05 TASK 811 NO FAULTS NOTED. PERFORMED #1 EEC BITE PER AMM 73-21-00 TEST PASSED. LEFT IGNITION INOP OK TO CONTINMay 31, 2025 · N462WN · Boeing 7377H4SDR SWAA2025060277298Ignition Lead · inoperativeABORTED ENGINE START #1 DUE TO NO LIGHT OFF ON THIRD ATTEMPT; CABIN CREW (F.O.) NOTED FIREBALL AND SMOKE IN TAILPIPE INSPECTED #1 ENGINE PER FIM 71-05 TASK 811 NO FAULTS NOTED. PERFORMED #1 EEC BITE PER AMM 73-21-00 TEST PASSED. LEFT IGNITION INOP OK TO CONTINMay 31, 2025 · N462WN · Boeing 7377H4SDR SWAA2025060276616Plug · inoperativeABORTED ENGINE START #1 DUE TO NO LIGHT OFF ON THIRD ATTEMPT; CABIN CREW (F.O.) NOTED FIREBALL AND SMOKE IN TAILPIPE INSPECTED #1 ENGINE PER FIM 71-05 TASK 811 NO FAULTS NOTED. PERFORMED #1 EEC BITE PER AMM 73-21-00 TEST PASSED. LEFT IGNITION INOP OK TO CONTINMay 31, 2025 · N462WN · Boeing 7377H4SDR HALA20250514133Igniter · faultedETOPS - ON START ENG 2, ENGINE REATTEMPT 2ND ATTEMPT SUCCESSFUL ENG 2 IGN A FAULT. REPLACED #2 ENG A IGNITER PLUG PER AMM 74-11-01. AUDIBLE CHECK GOOD. OK FOR SVC.May 13, 2025 · N214HA · Airbus A321271NSDR 2025FA0000276Igniter · malfunctionedINFORMED US THAT AN UNATTACHED IGNITOR HAD BEEN DISCOVERED IN THE ENGINE COMPARTMENT OF HIS AIRCRAFT, WHICH HAD LAST BEEN SERVICED BY US, CAUSING CONSIDERABLE DAMAGE DUE TO IT NOT BEING FIXED IN PLACE. THE INITIAL INSPECTION REVEALED THE COWLING WAS DIFFICULT Apr 17, 2025 · N509JJSDR HALA20250409104Igniter · damagedETOPS - DURING ENG 1 BORESCOPE INSP OF THE COMBUSTION CHAMBER AND HPT NOZZLE GUIDE VANES, IGNITER PLUG WAS REMOVED AND FOUND DAMAGED. REPLACED IGNITER REF AMM 74-21-01. CHECKS OKApr 8, 2025 · N214HA · Airbus A321271NSDR NACA2025032800001Igniter · faultedREMOVED AND REPLACED RIGHT ENG #2 IGNITER PLUG AND #2 IGNITION EXCITER OPS CHECK GOOD.Mar 28, 2025 · N567NC · Boeing 76733ASDR HALA20250317081Igniter · damagedETOPS - DURING #2 COMBUSTION LINER INSPECTION FOUND LOWER IGNTITOR PLUG DAMAGED. REMOVED AND REPLACED RIGHT HAND LOWER IGNITOR PLUG PER AMM 74-21-01, OPS CHECK GOOD, OK TO CONTINUE.Mar 16, 2025 · N228HA · Airbus A321271NSDR CALA2025030302564Igniter · failedABORTED START OF NUM 2 ENG WHEN FF DROPPED TO 0. FUEL SMELL IN C OCKPIT FUEL OBSERVED LEAKING #2 ENGINE LEFT IGNITION SYSTEM INOP. COMPLIED WITH MELCARD 7401A. TOMC APPROVES MEL 7401B FOR #2 ENGINE LEFT IGNITION INOP. ON MEL. *DM* SUGGEST REF FIM 80-06-804. FOMar 3, 2025 · N45440 · Boeing 737924ERSDR YENA2025011000038Igniter · failedFLT#20, LHR-JFK. (ETOPS) 'ENG 1 IGN B FAULT ( IGNITION SYSTEMS B) SYSTEM B ); REMOVED AND REPLACED ENG 1 IGNITOR B REF AMM 72-21-01 OPS TES OK.Jan 10, 2025 · N4077J · Airbus A321271NXSDR NACA2024111300001Igniter · failedLEFT ENGINE 2 FAILED START ATTEMPTS WITH #1 STARTER SELECTED. DEFERRED PER MEL 74-00-01B CAT C. REMOVED AND REPLACED LH ENGINE IGNITOR PLUG IAW AMM 74-21-02Nov 13, 2024 · N566NC · Boeing 7673BG
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