# JASC 7410: Ignition Power Supply

- Type: JASC system/component code (FAA)
- ATA chapter: 74 Ignition
- Title in the code table: IGNITION POWER SUPPLY
- Service difficulty reports: 89
- FAA code table: https://www.faa.gov/sites/faa.gov/files/JASC_Code.pdf#page=64
- Page: https://openairdocs.org/jasc/7410

## What it covers

The units and components which generate, control, furnish or distribute an electrical current to ignite the fuel air mixture in cylinders of reciprocating engines or in the combustion chambers or thrust augmentors of turbine engines.

## Service difficulty reports (89, newest 50)

- [SDR YENA2024011700060](https://openairdocs.org/sdr/YENA2024011700060), Jan 15, 2024: Airbus A321271N. EXCITER. FAILED. FLT#1124, LAX-JFK. (ETOPS) 'ENG 2 IGN A FAULT; FOUND IGNITOR LEADS A AND B IN SWAPPED POSITION AT THE IGNITOR PLUG. RE-S (N2156J)
- [SDR ASAA2023091745191](https://openairdocs.org/sdr/ASAA2023091745191), Sep 17, 2023: Boeing 737890. UNKNOWN. UNKNOWN. RIGHT IGN. APPEARED NOT TO WORK SWITCHED TO LEFT, ENGINESTART NORMAL. GROUNDED - YES. PERFORMED IGNITION SYSTEM AUDIBLE  (N558AS)
- [SDR ASAA2023081044572](https://openairdocs.org/sdr/ASAA2023081044572), Aug 10, 2023: Boeing 737890. EXCITER. INOPERATIVE. PILOT REPORT OF NO 1 ENGINE LEFT IGNITION INOP. GROUNDED - YES. REMOVED AND REPLACED #1 ENGINE LEFT IGNITION EXCITER REF (N559AS)
- [SDR ASAA2023080944504](https://openairdocs.org/sdr/ASAA2023080944504), Aug 9, 2023: Boeing 7379. UNKNOWN. UNKNOWN. RIGHT ENGINE FAIL TO LIGHT OFF, L & R IGN. GROUNDED - YES. FOUND #2 ENGINE L & R IGNITION C/B'S OPEN, CLOSED C/B'S PER A (N960AK)
- [SDR ASAA2023072144166](https://openairdocs.org/sdr/ASAA2023072144166), Jul 21, 2023: Boeing 737990ER. UNKNOWN. UNKNOWN. #1 EBGINE WOULD NOT START NO EGT NRISE, LOOKS LIKE LOW FUEL FLOW @ FIRST THEN ZERO FUEL FLOW. SHUT DOWN PER QRC ATTEMPED (N461AS)
- [SDR ASAA2023071244000](https://openairdocs.org/sdr/ASAA2023071244000), Jul 12, 2023: Boeing 7379. UNKNOWN. UNKNOWN. TWO ATTEMPTED ENGINE STARTS ON NO. 2 ENGINE WITH NO LIGHT OFF, RIGHT IGNITOR. GROUNDED - YES. FOUND #2 ENGINE IGNITION C (N291BT)
- [SDR ASAA2023062443745](https://openairdocs.org/sdr/ASAA2023062443745), Jun 24, 2023: Boeing 737990ER. UNKNOWN. UNKNOWN. DURING TASK CARD 78273000 FOUND FAULT CODE 74-30971 THE APL INPUT VOLTAGE FOR THE L EXCITER (IGN 1) IS OUT OF RANGE (LON (N467AS)
- [SDR ASAA2023042843057](https://openairdocs.org/sdr/ASAA2023042843057), Apr 28, 2023: Boeing 7379. EXCITER. FAILED. #1 ENGINE WOULD NOT LIGHT OFF AFTER START LEVER RAISED TO IDLE. GROUNDED - YES. REMOVED AND REPLACED RIGHT IGNITION EXCI (N937AK)
- [SDR ASAA2023040442720](https://openairdocs.org/sdr/ASAA2023040442720), Apr 4, 2023: Boeing 7379. EXCITER. FAULTY. ENG # 2 WOULD NOT START W/IGN SWITCH SET TO IGN R. GROUNDED - YES. REMOVED AND REPLACED RH IGNITION EXCITER IAW B737-9 A (N971AK)
- [SDR ASAA2023040242742](https://openairdocs.org/sdr/ASAA2023040242742), Apr 2, 2023: Boeing 737990ER. EXCITER. FAILED. ENG #1 NO LIGHT OFF DURING START. GROUNDED - YES. REMOVED AND REPLACED #1 ENG L/H EXITER AND IGNITOR, AUDIBLE TEST FAILE (N428AS)
- [SDR NACA2023033100018](https://openairdocs.org/sdr/NACA2023033100018), Mar 31, 2023: Boeing 767323. UNKNOWN. UNKNOWN. #2 ENGINE 2 EA IGNITION BOXES WITH BOTH CONNECTORS CORRODED. REMOVED 2 EA IGNITION EXCITERS AND REINSTALLED IN INSPECTED (N321CM)
- [SDR ASAA2023032542605](https://openairdocs.org/sdr/ASAA2023032542605), Mar 25, 2023: Boeing 7379. EXCITER. FAILED. #2 ENGINE NEGATIVE IGNITION ON TWO STARTS WITH LEFT IGNITER SELECTED. GROUNDED - YES. LEFT IGNITOR PLUG REPLACED REF B73 (N936AK)
- [SDR ASAA2023031342352](https://openairdocs.org/sdr/ASAA2023031342352), Mar 13, 2023: Boeing 737890. EXCITER. FAULTY. HUNG ENGINE START ON ENGINE 2, START LEVER RAISED AND VERY LITTLE FUEL FLOW, NO LIGHT OFF, RAN QRH AND MOTORED ENGINE PE (N532AS)
- [SDR NACA2023022600003](https://openairdocs.org/sdr/NACA2023022600003), Feb 26, 2023: Boeing 767323. NONE. NONE. RH ENGINE UPPER AND LOWER IGNITORS WORN. REMOVED AND REPLACED RH LOWER AND UPPER IGNITORS REF AMM 74-21-00, OPS CHECK GO (N399CM)
- [SDR ASAA2023022342051](https://openairdocs.org/sdr/ASAA2023022342051), Feb 23, 2023: Boeing 7379. UNKNOWN. UNKNOWN. OVERHEAD "MAINT" LIGHT ILLUMINATED. GROUNDED - YES. FOUND STATUS MSG "ENG 2 IGNITER L". REF B737-9 IFIM G74-20-00-810-80 (N978AK)
- [SDR ASAA2023011641783](https://openairdocs.org/sdr/ASAA2023011641783), Jan 16, 2023: Boeing 737890. EXCITER. INOPERATIVE. RIGHT IGNITION ENG #2 SYSTEM INOP. GROUNDED - YES. REPLACED R/H IGNITION EXCITER REF AMM 74-11-01. (N530AS)
- [SDR YENA2022100600995](https://openairdocs.org/sdr/YENA2022100600995), Oct 5, 2022: Airbus A321271N. NONE. NONE. FLT#288, LAX-BOS. (ETOPS) ' ENG 1 IGNITER A FAULT DURING ENGINE 1 START, FADEC AUTO CRANKED AND AUTO RESTARTED NORMALLY, (N2142J)
- [SDR NACA2022082400001](https://openairdocs.org/sdr/NACA2022082400001), Aug 24, 2022: Boeing 767. NONE. NONE. LEFT ENGINE #2 IGNITOR INOP. DEFERRED PER MEL 74-00-01A. REMOVED AND REPLACED #2 IGNITION LEAD ON LEFT ENGINE PER AMM 74 (N399CM)
- [SDR NACA2022082200001](https://openairdocs.org/sdr/NACA2022082200001), Aug 22, 2022: Boeing 767. EXCITER. FAILED. HUNG START ON #1 ENGINE. FOUND NO IGNITION ON LH ENGINE FROM SOURCE 2. REPLACED LH ENGINE EXCITER 2 IAW AMM 74-11-01. RE (N399CM)
- [SDR ASAA2022071639092](https://openairdocs.org/sdr/ASAA2022071639092), Jul 16, 2022: Boeing 737890. CIRCUIT BREAKER. POPPED. ENG # 1 DECLINED START WHEN START LEVER RAISED TO IDLE. GROUNDED - YES. FOUND ENG 1 IGNITION LEFT AND RIGHT C/B'S POPPED (N563AS)
- [SDR ASAA2022062638810](https://openairdocs.org/sdr/ASAA2022062638810), Jun 26, 2022: Boeing 737890. EXCITER. INOPERATIVE. #1 ENGINE FAILED TO IGNITE EGT STOPPED AT 230. GROUNDED - YES. REMOVED AND REPLACED IGNITION EXCITER LEFT ON #1 ENG, OPS (N532AS)
- [SDR ASAA2022062338776](https://openairdocs.org/sdr/ASAA2022062338776), Jun 23, 2022: Boeing 737990ER. EXCITER. FAULTY. WHILE DOING AN AIR START, WE HAD TO ABORT #1 START, EGT GOT TO 400F & IT STARTED TO FLASH & ROLLED BACK. I PUT THE START (N457AS)
- [SDR ASAA2022062238775](https://openairdocs.org/sdr/ASAA2022062238775), Jun 22, 2022: Boeing 737990ER. EXCITER. INOPERATIVE. #1 ENG NO LIGHT OFF WITH RIGHT IGNITION. SUCCESSFULLY STARTED WITH LEFT IGNITION. GROUNDED - YES. REMOVED AND REPLACED I (N494AS)
- [SDR ASAA2022062038731](https://openairdocs.org/sdr/ASAA2022062038731), Jun 20, 2022: Boeing 7379. EXCITER. FAULTY. ABORTED ENG START #2. NO FUEL FLOW. GROUNDED - YES. REMOVED AND REPLACED #2 ENG RIGHT IGNITER REF B737-9 AMM 74-21-02, R (N934AK)
- [SDR NACA2022061500001](https://openairdocs.org/sdr/NACA2022061500001), Jun 15, 2022: Boeing 767323. NONE. FAILED. #2 IGNITION INOP (RH ENGINE). DEFERRED - REMOVED AND REPLACED RIGHT ENGINE #2 IGNITOR AND IGNITION EXCITER BOX IAW AMM 7 (N379CX)
- [SDR ASAA2022051538325](https://openairdocs.org/sdr/ASAA2022051538325), May 15, 2022: Boeing 7379. EXCITER. FAILED. #1 ENGINE WOULD NOT START. 2 ATTEMPTS. ALL INDICATIONS INDICATED NORMAL EXCEPT NO EGT RISE AFTER START LEVER RAISED TO I (N924AK)
- [SDR ASAA2022031437706](https://openairdocs.org/sdr/ASAA2022031437706), Mar 14, 2022: Boeing 737890. EXCITER. INOPERATIVE. DURING #1 ENGINE START W/ RIGHT IGNITOR, HAD NO EGT RISE. SUCCESSFUL START WITH LEFT IGNITOR. GROUNDED - YES. REMOVED AN (N589AS)
- [SDR NACA2022031300002](https://openairdocs.org/sdr/NACA2022031300002), Mar 13, 2022: Boeing 767300. IGNITER. FAILED. ENGINE START - NO IGNITION WHEN FUEL CONTROL SWITCH PLACED TO RUN, RIGHT ENGINE IGNITION 1. REMOVED AND REPLACED RH ENGI (N321CM)
- [SDR NACA2022031300001](https://openairdocs.org/sdr/NACA2022031300001), Mar 13, 2022: Boeing 767300. NOT REPORTED. NOT REPORTED. BY INBOUND PILOTS' BRIEFING PILOTS CONCERNED RH ENGINE #1 IGNITION SYS MAY BE INOP. PERFORMED IGNITION SYS AUDIBLE TEST  (N321CM)
- [SDR ASAA2022010837102](https://openairdocs.org/sdr/ASAA2022010837102), Jan 8, 2022: Boeing 737890. EXCITER. FAULTY. DURING #2 ENGINE START, AFTER MOVING #2 START LEVER TO IDLE, RAMP REPORTED WHITE SMOKE FROM #2 ENGINE. FUEL FLOW WAS IND (N558AS)
- [SDR ASAA2022010437101](https://openairdocs.org/sdr/ASAA2022010437101), Jan 4, 2022: Boeing 737890. EXCITER. INOPERATIVE. NO EGT RISE ON START UP OF #2 ENGINE WHEN START LEVER RAISED TO IDLE. GROUNDED - YES. REMOVED AND REPLACED #2 ENG L IGNI (N563AS)
- [SDR ASAA2021120536812](https://openairdocs.org/sdr/ASAA2021120536812), Dec 5, 2021: Boeing 737990ER. EXCITER. INOPERATIVE. LH IGN ON #1 ENG IS INOP. GROUNDED - YES. PERB737-900 FIM 74-21 TASK 806 FOUND L1 EXCITER INOP. REMOVED AND REPLACED L1  (N433AS)
- [SDR 9JLA2021110320693](https://openairdocs.org/sdr/9JLA2021110320693), Oct 31, 2021: Gulstm 200. IGNITER BOX. DEFECTIVE. THE FLIGHT CREW REPORTED RECEIVING A "RIGHT FADEC MINOR" MESSAGE. THE MAINTENANCE TEAM DETERMINED THE RIGHT NO2 ENGINE I (N415PR)
- [SDR ASAA2020022132255](https://openairdocs.org/sdr/ASAA2020022132255), Feb 21, 2020: Boeing 737890. UNKNOWN. UNKNOWN. NO RISE IN EGT AFTER START LEVER RAISED TO IDLE ON #1 ENGINE USING RIGHT IGNITER. ENGINE #1 STARTED NORMALLY USING THE L (N581AS)
- [SDR CALA2019092301630](https://openairdocs.org/sdr/CALA2019092301630), Sep 23, 2019: Boeing 757224. RELAY. FAILED. THIS AIRCRAFT REQUIRES INSPECTION AND/OR MAINTENANCE ACTION BY A CERTIFIED TECHNICIAN TO DETERMINE THAT IT IS IN A CONDI (N14102)
- [SDR ASAA2019080530320](https://openairdocs.org/sdr/ASAA2019080530320), Aug 5, 2019: Boeing 737990ER. CIRCUIT BREAKER. TRIPPED. DURING NR 1 ENGINE START, USING RIGHT IGNITOR SELECTION, NO ENGINE LIGHT LIGHT OFF. USING LEFT IGNITOR SELECTION NR 1 EN (N471AS)
- [SDR UIEA2019050504129](https://openairdocs.org/sdr/UIEA2019050504129), May 5, 2019: Boeing 767306. UNKNOWN. MALFUNCTIONED. NO LIGHT ON FIRST START ATTEMPT USING SINGLE IGNITION. USED BOTH FOR SECOND ATTEMPT, SUCCESSFUL START. RIGHT ENGINE(<P>P (N1409A)
- [SDR EPUA2019022019001](https://openairdocs.org/sdr/EPUA2019022019001), Feb 19, 2019: Cessna 207A. IGNITION LEAD. UNKNOWN. DURING FLIGHT PILOT INDICATED ENGINE ROUGHNESS AND VIBRATION. MAINTENANCE REPLACED LEFT HAND IGNITION HARNESS AND R/H MU (N9869M)
- [SDR ASAA2019021028129](https://openairdocs.org/sdr/ASAA2019021028129), Feb 10, 2019: Airbus A321253N. IGNITION SYS. FAULTED. ENGINE 2 IGNITION B FAULT GROUNDED - YES. ON DEFERRAL. (N921VA)
- [SDR ASAA2018122427534](https://openairdocs.org/sdr/ASAA2018122427534), Dec 22, 2018: Boeing 737900ER. ENGINE. UNKNOWN. WHILE STARTING ENGINE #2, ENGINE DID NOT LIGHT NORMAL N2 NORMAL N1 FUEL FLOW OBSERVED WITH NO EGT RISE. ENGINE IGNITES I (N403AS)
- [SDR HALA2018110800573](https://openairdocs.org/sdr/HALA2018110800573), Nov 7, 2018: Airbus A321271N. FAULT MESSAGE. FALSE ACTIVATION. ETOPS SIGNIFICANT SYSTEM - BTB ENG 2 IGN A FAULT.// PERFORMED GROUND SCAN OF EEC 2A/B - NO FAULTS ASSOCIATED WITH IGN A  (N209HA)
- [SDR UIEA2018021800248](https://openairdocs.org/sdr/UIEA2018021800248), Feb 17, 2018: Boeing 767316. WARNING LIGHT. FALSE ACTIVATION. LEFT ENGINE IGNITION SYS 1 STATUS MESSAGE. PERFORMED FIM 74-00 FT 811, AND PIMU GROUND TEST IAW AMM 77-35-00. NO FAULTS  (N1381A)
- [SDR IPXA2017121124378](https://openairdocs.org/sdr/IPXA2017121124378), Dec 11, 2017: Boeing 76734AF. CIRCUIT BREAKER. TRIPPED. INSPECTION TYPE:ETOPDURING CRUISE EICAS STATUS LEFT ENG IGNITER 1.LEFT ENG IGNITION SYS 1 INOP. T/S AND FOUND L PIMU FAU (N318UP)
- [SDR REXA2016111602223](https://openairdocs.org/sdr/REXA2016111602223), Nov 16, 2016: Cndair CL6002D24. LEAD. INOPERATIVE. RIGHT ENGINE DID NOT LIGHT OFF. MEETS ALL PARAMETERS BEFORE FUEL WAS INTRODUCED. NO LIGHT OFF. THE ODOR OF FUEL FILLED T (N304PQ)
- [SDR ASAA2016100218188](https://openairdocs.org/sdr/ASAA2016100218188), Oct 2, 2016: Boeing 737990ER. EXCITER. INTERMITTENT. #2 ENGINE LEFT IGNITION INOP. GROUNDED - YES. UNABLE TO DUPLICATE FAULT, PRECAUTIONARY REPLACEMENT OF L/H EXCITER, REF B (N471AS)
- [SDR ASAA2016070917322](https://openairdocs.org/sdr/ASAA2016070917322), Jul 9, 2016: Boeing 737890. ENGINE. UNKNOWN. NR 1 ENGINE DID NOT LIGHT OFF DURING START. ACCOMPLISHED ABORT PROCEDURE. ACCOMPLISHED QRC. STRONG ODOR OF FUMES. ACFT G (N583AS)
- [SDR ASAA2016022315644](https://openairdocs.org/sdr/ASAA2016022315644), Feb 23, 2016: Boeing 737990ER. CIRCUIT BREAKER. TRIPPED. ABORTED ENGINE NR 2 START. WITH 25 PERCENT N2 START LEVER WAS AT IDLE AND INITIAL FUEL FLOW WENT TO .2 AND THEN ROLLED B (N483AS)
- [SDR ASAA2015041611390](https://openairdocs.org/sdr/ASAA2015041611390), Apr 16, 2015: Boeing 737890. ENGINE. MALFUNCTIONED. DURING START OF NR 2 ENGINE, NO FUEL FLOW AND EGT WHEN START LEVER PLACED TO IDLE. NR 2 ENGINE RT IGNITION C/B DISCOVERE (N586AS)
- [SDR 9JLA201504038323](https://openairdocs.org/sdr/9JLA201504038323), Mar 2, 2015: Lear 45LEAR. IGNITER BOX. FAULTY. THE LT ENGINE IGNITION INDICATED A WHITE EICAS MSG WHILE IN FLIGHT, WHEN THE IGNITION SWITCH IS MANUALLY PRESSED. TROUBL (N811BP)
- [SDR ASAA2014111209652](https://openairdocs.org/sdr/ASAA2014111209652), Nov 12, 2014: Boeing 737890. WARNING LIGHT. FALSE ACTIVATION. ON START, NR 2 ENGINE WOULD NOT INDICATE EGT RISE GOOD N1/N2 ROTATION. ACFT GROUNDED. PERFORMED NR 2 ENG IGNITION TEST I (N513AS)

All 89: https://openairdocs.org/jasc/7410/reports.md

## Other codes in chapter 74

- [JASC 7400](https://openairdocs.org/jasc/7400): Ignition System (249 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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