# JASC 7400: Ignition System

- Type: JASC system/component code (FAA)
- ATA chapter: 74 Ignition
- Title in the code table: IGNITION SYSTEM
- Service difficulty reports: 249
- FAA code table: https://www.faa.gov/sites/faa.gov/files/JASC_Code.pdf#page=63
- Page: https://openairdocs.org/jasc/7400

## What it covers

For general reports of ignition problems with insufficient information to file in a more specific JASC 7400 series code.

## Service difficulty reports (249, newest 50)

- [SDR SWAA2026100247358](https://openairdocs.org/sdr/SWAA2026100247358), Sep 28, 2026: Boeing 7377BD. IGNITER. FAILED. NR 1 ENGINE FUEL FLOW, LI LIGHT OFF, LEFT IGNITION SELECTED NR 1 ENGINE FUEL FLOW LI LIGHT OFF LEFT IGNITION SELECTED 05 (N7750A)
- [SDR YENA2026092100856](https://openairdocs.org/sdr/YENA2026092100856), Sep 19, 2026: Airbus A321271NX. IGNITION SYS. FAULTED. FLT 1524, LAX-JFK. (ETOPS) ENG 2 IGN A FAULT ( IGNITION SYSTEMS SYSTEM A ). R & R ENG NR 2 IGNITION A IAW AMM 74-21-01-4 (N2169J)
- [SDR YENA2026090400727](https://openairdocs.org/sdr/YENA2026090400727), Sep 3, 2026: Airbus A321271NX. IGNITION SYS. FAULTED. FLT 1407, JFK-CDG. (ETOPS) ENG 2 IGN B FAULT ( IGNITION SYSTEMS SYSTEM B ). OPEN (N4073J)
- [SDR YENA2026082400700](https://openairdocs.org/sdr/YENA2026082400700), Aug 23, 2026: Airbus A321271NX. IGNITION SYS. FAULTED. FLT# 331, BOS-MXP. (ETOPS) "ENG 2 IGN B FAULT ( IGNITION SYSTEMS SYSTEM B ). (N4073J)
- [SDR 2026FA0000655](https://openairdocs.org/sdr/2026FA0000655), Aug 19, 2026: Dhav DHC3. IGNITION SWITCH. FAILED. AUTO IGNTION SWITCH FAILURE. SWITCH FAILED INTERNALLY. (N205RC)
- [SDR SWAA2026071531528](https://openairdocs.org/sdr/SWAA2026071531528), Jul 5, 2026: Boeing 7378H4. IGNITION SYS. FAULTED. NR 1 ENGINE HAD IMPENDING HOT START INDICATION COUPLED WITH FUEL LIKE ODOR. FOUND NR 1 ENGINE LT IGNITION TO BE INOPERAT (N8559Q)
- [SDR YENA2026062200486](https://openairdocs.org/sdr/YENA2026062200486), Jun 21, 2026: Airbus A321271NX. IGNITION SYS. FAULTED. FLT 1333, BOS-SFO. (ETOPS) DURING ENG 1 START IGN A FAULT ENG COMPLETED AUTOSTART ( IGNITION SYSTEMS SYSTEM A ). PER TSM (N2105J)
- [SDR YENA2026061900484](https://openairdocs.org/sdr/YENA2026061900484), Jun 17, 2026: Airbus A321271NX. IGNITION SYS. WARNING MESSAGE. FLT 411, JFK-LAS. (ETOPS) ENGINE 1 IGNITION B FAULT (IGNITION SYSTEMS SYSTEM B ). PERFORMED OPS CHK THROUGH CFDS IAW AMM (N2165J)
- [SDR YENA2026051300453](https://openairdocs.org/sdr/YENA2026051300453), May 10, 2026: Airbus A321271NX. WARNING MESSAGE. FALSE INDICATION. FLT #33, BOS-CDG,(ETOPS)ENG 1 START FAULT FOLLOWED BY ENG 1 IGN FAULT ; RESET IGN SYS A AND PERFORMED SUCCESSFUL ENG 1 I (N4058J)
- [SDR YENA2026020200104](https://openairdocs.org/sdr/YENA2026020200104), Jan 31, 2026: Airbus A321271NX. IGNITION SYS. FAULTED. FLT 523, JFK - LAX (ETOPS) . ENG 2 IGN B FAULT, AFTER ENGINE STARTED ( IGNITION SYSTEMS B) SYSTEM B ). R & R IGN B IN EN (N4058J)
- [SDR YENA2025092300963](https://openairdocs.org/sdr/YENA2025092300963), Sep 22, 2025: Airbus A321271NX. EXCITER. FAULTED. FLT#2289, AMS-JFK. (ETOPS) "ENG 2 IGN B FAULT ( IGNITION SYSTEMS B) SYSTEM B ); (RESOLVED ON W/O: 1443473 TASKCARD: NR-0 (N4080J)
- [SDR YENA2025091800949](https://openairdocs.org/sdr/YENA2025091800949), Sep 17, 2025: Airbus A321271NX. IGNITION SYS. FAULTED. FLT#354, DUB-JFK. (ETOPS) "ENG 1 IGN B FAULT ON START UP ( IGNITION SYSTEMS B) SYSTEM B ); PERFORMED SINGLE ENGINE IDLE  (N2169J)
- [SDR CALA2025081107570](https://openairdocs.org/sdr/CALA2025081107570), Aug 9, 2025: Boeing 757324. SLEEVE. CUT. FOUND CUT ON TEFLON SLEEVE ON NR 1 ENGINE LOCATED BETWEEN 6-7 O'CLOCK. FOUND NO DAMAGED TO KEVLAR WRAP. TEFLON SLEEVE TE (N75854)
- [SDR YENA2025060200552](https://openairdocs.org/sdr/YENA2025060200552), Jun 1, 2025: Airbus A321271NX. IGNITION SYS. FAULTED. FLT#2288, JFK-AMS. (ETOPS) 'ENG 2 IGN B FAULT ( IGNITION SYSTEMS B) SYSTEM B ).' (SUPPLEMENTAL INFORMATION TO FOLLOW) (N4076J)
- [SDR YENA2025052100526](https://openairdocs.org/sdr/YENA2025052100526), May 21, 2025: Airbus A321271NX. IGNITION SYS. FAULTED. FLT#1333, BOS-SFO . (ETOPS). 'ENG 2 IGN B FAULT ( IGNITION SYSTEMS B) SYSTEM B ); FOLLOWED TSM 74-00-00-810-832-A STARTE (N4076J)
- [SDR ABXA20250515096](https://openairdocs.org/sdr/ABXA20250515096), May 15, 2025: Boeing 767231. EGT INDICATION. READS HIGH. ON TAXI OUT, ATTEMPTED NORMAL START ON LEFT ENG, EGT WAS HIGH. ABORTED START. ACCOMPLISHED QRH PROCEDURE. SECOND ATTEMPT (N650GT)
- [SDR CALA2025041703927](https://openairdocs.org/sdr/CALA2025041703927), Apr 17, 2025: Boeing 737924ER. IGNITION SYS. INOPERATIVE. ENG 2 FAIL TO START SRONG FUEL SMELL MOTOR ENG SECOND ATTEMPT UN SUCCES REQUEST MEL 7401G. IGNITION 2 FAULTY. MX MSG 74- (N34460)
- [SDR QR9R2024120300001](https://openairdocs.org/sdr/QR9R2024120300001), Dec 3, 2024: Bolkms BK117C2. SOLENOID VALVE. FAILED. #1 ENGINE WOULD NOT IGNITE IN 3 ATTEMPTS. NO RISE IN TGT IN ALL 3 ATTEMPTS. SWAPPED #1 AND #2 ENGINE IGNITION SOLENOID V
- [SDR YENA2024100701333](https://openairdocs.org/sdr/YENA2024100701333), Oct 4, 2024: Airbus A321271N. IGNITION SYS. FAULTED. FLT#1620, BOS-LHR. (ETOPS) 'ENG 2 IGN B FAULT ( IGNITION SYSTEMS B) SYSTEM B ); REMOVED & REPLACED ENG #2 IGNITION B IAW (N4076J)
- [SDR YENA2024082601171](https://openairdocs.org/sdr/YENA2024082601171), Aug 24, 2024: Airbus A321271N. IGNITION SYS. NO DISCREPANCY. FLT#33, BOS-CDG. (ETOPS) 'ENG 2 IGN B FAULT ( IGNITION SYSTEMS B) SYSTEM B ); PERFORMED OPERATIONAL TEST OF FADEC 2 CHAN (N4062J)
- [SDR CALA2024080600376](https://openairdocs.org/sdr/CALA2024080600376), Aug 5, 2024: Boeing 777222. RELAY. FAILED. ENG IGNITOR R2 STATUS MSG AWAITING TOMC APRVL TO DEF R ENG IGNITOR 2 PER MEL 7400D M-PROCEDURE C/W PLACARD INSTALLED TOM (N209UA)
- [SDR 2024FA0000449](https://openairdocs.org/sdr/2024FA0000449), Jun 14, 2024: Beech B24R. IGNITION SYS. FAULTED. SUREFLY SIM PRODUCED WHAT SOUNDED LIKE AND FELT LIKE DETONATION IN THE PHASE OF FLIGHT FROM CLIMB TO CRUISE WHEN PROP RP (N9372S)
- [SDR 8HBR20240520062](https://openairdocs.org/sdr/8HBR20240520062), May 19, 2024: Robsin R44. IGNITION UNIT. FAILED. PILOTS REPORTED A ROUGH ENGINE RUNNING ON THE LEFT IGNITION UNIT (EIS). IT WAS DETERMINED THE EIS UNIT HAS FAILED. THIS  (N4056V)
- [SDR 2024FA0000244](https://openairdocs.org/sdr/2024FA0000244), Mar 21, 2024: Diamon DA40. IGNITION SWITCH. WORN. DIFFICULTY TURNING KEY BETWEEN POSITIONS AND DIFFICULTY REMOVING KEY FROM SWITCH. (N655DS)
- [SDR NACA2024022900001](https://openairdocs.org/sdr/NACA2024022900001), Feb 29, 2024: Boeing 767323. ENGINE. INOPERATIVE. MI@1150Z KMIA NO IGNITION ON R ENG START ATTEMPT, R IGNITOR SELECTED. DEFERRED PER MEL 74-00-01B ON 2-29-24@1205Z. (N399CM)
- [SDR QR9R2024022200001](https://openairdocs.org/sdr/QR9R2024022200001), Feb 22, 2024: Bolkms BK117C2. SOLENOID VALVE. FAILED. #1 ENGINE FAILED TO START. IGNITION SOLENOID VALVES SWAPPED FROM ENGINE TO ENGINE. PROBLEM FOLLOWED IGNITION SOLENOID VA
- [SDR 2024FA0000183](https://openairdocs.org/sdr/2024FA0000183), Feb 21, 2024: Diamon DA42NG. ECU. FAILED. LEFT ENGINE HAS CONTINUED TO HAVE ECU FAILS RELATED TO "PROP SELF TEST FAIL". THE PROP GOV HAS BEEN REPLACED 10 TIMES IN (N542BL)
- [SDR YENA2024011100031](https://openairdocs.org/sdr/YENA2024011100031), Jan 9, 2024: Airbus A321271N. UNKNOWN. UNKNOWN. FLT#1124, LAX-JFK. (ETOPS) 'ENG 1 IGN B FAULT. AFTER NUMBER 1 ENGINE START; REMOVED AND REPLACED ENG #1 IGN B PLUG IAW A (N2156J)
- [SDR QR9R2023112900001](https://openairdocs.org/sdr/QR9R2023112900001), Nov 29, 2023: Bolkms BK117C2. SOLENOID VALVE. FAILED. DURING START RUN-UP, ENGINE #2 DID NOT START AFTER 3 ATTEMPTS; TOT DID NOT RISE. REMOVED AND REPLACED IGNITION SOLENOID 
- [SDR YENA2023112001437](https://openairdocs.org/sdr/YENA2023112001437), Nov 20, 2023: Airbus A321271N. UNKNOWN. UNKNOWN. FLT#1124, LAX-JFK. (ETOPS) ENG 1 IGNITION A FAULT AFTER ENGINE START ( IGNITION SYSTEMS A) SYSTEM A ). REMOVED AND REPLA (N4048J)
- [SDR ASAA2023100645473](https://openairdocs.org/sdr/ASAA2023100645473), Oct 6, 2023: Boeing 7379. UNKNOWN. UNKNOWN. #2 ENGINE WON'T START WITH IGNITION ON R. GROUNDED - YES. C/O BITE TEST OF SYSTEM A AND SYSTEM B CHANNELS ENG #2 WAS NOT (N941AK)
- [SDR ASAA2023092645333](https://openairdocs.org/sdr/ASAA2023092645333), Sep 26, 2023: Boeing 7379. UNKNOWN. UNKNOWN. OVERHEAD MAINT LIGHT ILLUMINATED. GROUNDED - YES. OPS TEST CHANNEL B IGNITION SYSTEM, ENG #2 IGNITION TEST PASSED PER B7 (N954AK)
- [SDR ASAA2023092245243](https://openairdocs.org/sdr/ASAA2023092245243), Sep 22, 2023: Boeing 7379. UNKNOWN. UNKNOWN. MAINT LIGHT ILLUMINATED ON LANDING. GROUNDED - YES. CLEARED "ENG 2 IGNITER R" MSG PER G74-20-00-810-804 IFIM TASK. NO FU (N954AK)
- [SDR ASAA2023092245242](https://openairdocs.org/sdr/ASAA2023092245242), Sep 22, 2023: Boeing 737890. UNKNOWN. UNKNOWN. #1 ENG L/H IGNITOR LEAD WORN THROUGH SHEATHING. GROUNDED - YES. (RESOLVED ON W/O: 1968911 TASKCARD: N/R-00006 ) PERFORME (N569AS)
- [SDR ASAA2023092145231](https://openairdocs.org/sdr/ASAA2023092145231), Sep 21, 2023: Boeing 7379. UNKNOWN. UNKNOWN. ABORTED #1 ENG START. NEGATIVE LIGHT OFF. GROUNDED - YES. (RESOLVED ON W/O: 1968805 TASKCARD: N/R-00014 ) REVERSED MEL C (N978AK)
- [SDR ASAA2023092045232](https://openairdocs.org/sdr/ASAA2023092045232), Sep 20, 2023: Boeing 7379. UNKNOWN. UNKNOWN. WHILE STARTING #2, NO LIGHT OFF AFTER 3 ATTEMPTS IGN L. GROUNDED - YES. (RESOLVED ON W/O: 1970426 TASKCARD: N/R-00001 )  (N936AK)
- [SDR 2023FA0000528](https://openairdocs.org/sdr/2023FA0000528), Sep 8, 2023: Piper PA28181. UNKNOWN. UNKNOWN. PILOT REPORTS THAT THE INITIAL MAGNETO CHECK, THE ENGINE WAS RUNNING ROUGH, ON SECOND MAGNETO CHECK ENGINE SMOOTH OUT. O (N792A)
- [SDR ASAA2023083144899](https://openairdocs.org/sdr/ASAA2023083144899), Aug 31, 2023: Boeing 737890. UNKNOWN. UNKNOWN. ON START ENGINE #1 WOULD NOT LIGHT OFF. FUEL FLOW INITIALLY STARTED AND THEN WENT TO 0. GROUNDED - YES. COMPLIED WITH FI (N559AS)
- [SDR ASAA2023083044861](https://openairdocs.org/sdr/ASAA2023083044861), Aug 30, 2023: Boeing 7379. UNKNOWN. UNKNOWN. MAINT LT ILLUMINATED AFTER TOUCHDOWN. GROUNDED - YES. FOUND FDE ENG 1 IGNITER L WITH ACTIVE STATUS AND FAULT CODE 742 10 (N963AK)
- [SDR ASAA2023082944898](https://openairdocs.org/sdr/ASAA2023082944898), Aug 29, 2023: Boeing 7379. UNKNOWN. UNKNOWN. ENG #2 NO LIGHT OFF. GROUNDED - YES. PER IFIM TASK G74-00-00-810-824. PERFORMED EEC CHANNEL B IGNITION SYSTEM TEST. REF  (N953AK)
- [SDR ASAA2023082944862](https://openairdocs.org/sdr/ASAA2023082944862), Aug 29, 2023: Boeing 7379. UNKNOWN. UNKNOWN. MAINT CAUTION LIGHT ILLUMINATED AFTER LANDING. GROUNDED - YES. REF MEL 74-00-01C FOR #1 ENG R IGNITION SYSTEM 60643132.  (N954AK)
- [SDR ASAA2023072744281](https://openairdocs.org/sdr/ASAA2023072744281), Jul 27, 2023: Boeing 7379. UNKNOWN. UNKNOWN. AFTER LANDING MAINT LIGHT ILLUMINATED. GROUNDED - YES. (RESOLVED ON W/O: 1961265 TASKCARD: N/R-00004 ) REVERSED MAINTENA (N942AK)
- [SDR YENA2023072800875](https://openairdocs.org/sdr/YENA2023072800875), Jul 24, 2023: Airbus A321271N. UNKNOWN. UNKNOWN. FLT#287, BOS-LAX. (ETOPS) 'ENG 2 IGN B ( IGNITION SYSTEMS - SYSTEM B ). REPLACED ENG 2 IGN B IGNIER REF 74-21-41. MX-4 U (N2142J)
- [SDR HALA2023071200143](https://openairdocs.org/sdr/HALA2023071200143), Jul 11, 2023: Airbus A321271N. UNKNOWN. UNKNOWN. ETOPS - WHILE PERFORMING BORESCOPE, FOUND #2 IGNITER PLUG WORN. REMOVED AND REPLACED #2 IGNITER PLUG PER AMM 74-21-01. O (N230HA)
- [SDR NACA2023061900001](https://openairdocs.org/sdr/NACA2023061900001), Jun 19, 2023: Boeing 767323. UNKNOWN. UNKNOWN. LH AND RH IGNITORS FOUND INOP DURING #2 ENGINE BORESCOPE INSPECTION. BOTH IGNITOR PLUGS #2 ENGINE REPLACED PER AMM 74-21 (N379CX)
- [SDR ASAA2023060843539](https://openairdocs.org/sdr/ASAA2023060843539), Jun 8, 2023: Boeing 7379. UNKNOWN. UNKNOWN. MAINT LIGHT ON OVERHEAD PANEL ON AFTER LANDING. GROUNDED - YES. ON DEFERRAL. (N963AK)
- [SDR ASAA2023060543491](https://openairdocs.org/sdr/ASAA2023060543491), Jun 5, 2023: Boeing 7379. EXCITER. FAULTY. NEGATIVE IGNITION ON #2 ENGINE START. VERY LOW FUEL FLOW WHEN START LEVER RAISED TO IDLE (.26) THEN WENT TO ZERO. GROUND (N978AK)
- [SDR YENA2023051900546](https://openairdocs.org/sdr/YENA2023051900546), May 19, 2023: Airbus A321271N. UNKNOWN. UNKNOWN. FLT#1107, JFK-LHR. (ETOPS) 'ON 2 ENGINE START DURING TAXI OUT RC'VD ENG 2 IGN A FAULT ENGINE STARTED WITH AUTO MOTORING; (N4048J)
- [SDR YENA2023005020488](https://openairdocs.org/sdr/YENA2023005020488), Apr 29, 2023: Airbus A321271N. UNKNOWN. UNKNOWN. FLT#44, LGW-JFK. (ETOPS) ' ENG 1 IGNITION B INOP ( IGNITION SYSTEMS - SYSTEM B ); REMOVED AND RELACED ENG 1 IGN B IGNITO (N4022J)
- [SDR 2023FA0000207](https://openairdocs.org/sdr/2023FA0000207), Apr 12, 2023: UNKNOWN. UNKNOWN. THE MAGNETO'S IMPULSE COUPLING HAS LOOSE RIVETS AND THE MAGNETO SERIAL RANGE IS OUTSIDE OF SERVICE BULLETIN SB2-19A.

All 249: https://openairdocs.org/jasc/7400/reports.md

## Other codes in chapter 74

- [JASC 7410](https://openairdocs.org/jasc/7410): Ignition Power Supply (89 reports)
- [JASC 7411](https://openairdocs.org/jasc/7411): Low Tension Coil (14 reports)
- [JASC 7412](https://openairdocs.org/jasc/7412): Exciter (300 reports)
- [JASC 7413](https://openairdocs.org/jasc/7413): Induction Vibrator (5 reports)
- [JASC 7414](https://openairdocs.org/jasc/7414): Magneto/Distributor (2,447 reports)
- [JASC 7420](https://openairdocs.org/jasc/7420): Ignition Harness (Distribution) (213 reports)
- [JASC 7421](https://openairdocs.org/jasc/7421): Spark Plug/Igniter (703 reports)
- [JASC 7430](https://openairdocs.org/jasc/7430): Ignition Switching (111 reports)
- [JASC 7497](https://openairdocs.org/jasc/7497): Ignition System Wiring (97 reports)

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