# JASC 2410: Alternator-Generator Drive

- Type: JASC system/component code (FAA)
- ATA chapter: 24 Electrical Power
- Title in the code table: ALTERNATOR-GENERATOR DRIVE
- Service difficulty reports: 891
- FAA code table: https://www.faa.gov/sites/faa.gov/files/JASC_Code.pdf#page=20
- Page: https://openairdocs.org/jasc/2410

## What it covers

For reports on alternator and generator drives mounted on reciprocating "opposed" type engines. Does not include alternator cases. Typical parts are bracket, pulley, belt, link, idler pulley, bolt, drive shaft and gears that stay with the alternator. Also for reports on constant speed drive (CSD) unit mounted on turbine engines to drive alternating current (AC) producing alternators at a predetermined and constant RPM. Typical parts are shaft seal, shaft, etc.

## Service difficulty reports (891, newest 50)

- [SDR ABXA20260921415](https://openairdocs.org/sdr/ABXA20260921415), Sep 21, 2026: Boeing 76737D. IDG. FAULTED. DURING ENGINE START AND TAXI, L ENG GEN DRIVE & DISC. CREW RETURNED TO THE GATE (BTB). MTC DEFERRED LT ENGINE IDG IAW ME (N1327A)
- [SDR SWI2025F00066](https://openairdocs.org/sdr/SWI2025F00066), Jan 10, 2025: Cndair CL6002B19. ELECTRICAL SYS. POWER LOSS. COMPLETE LOSS OF AC POWER IN FLIGHT. ADG DEPLOYED AUTOMATICALLY. POWER LOSS OCCURRED WHILE SELECTING FLAPS 8. RAN QRC/QR (N466SW)
- [SDR SWAA2024120473111](https://openairdocs.org/sdr/SWAA2024120473111), Dec 1, 2024: Boeing 7377H4. IDG. SLOW. N1 & N2 SLOW TO REDUCE BELOW 45% N1 WHEN RETARDING THRUST LEVER. TAKES APPROX 30 SECS TO REDUCE TO IDLE. ( #1 ENGINE )<[ (N486WN)
- [SDR SWAA2024120473951](https://openairdocs.org/sdr/SWAA2024120473951), Dec 1, 2024: Boeing 7377H4. HMU. SLOW. N1 & N2 SLOW TO REDUCE BELOW 45% N1 WHEN RETARDING THRUST LEVER. TAKES APPROX 30 SECS TO REDUCE TO IDLE. ( #1 ENGINE )<[ (N486WN)
- [SDR SWAA2024120473952](https://openairdocs.org/sdr/SWAA2024120473952), Dec 1, 2024: Boeing 7377H4. PUMP. SLOW. N1 & N2 SLOW TO REDUCE BELOW 45% N1 WHEN RETARDING THRUST LEVER. TAKES APPROX 30 SECS TO REDUCE TO IDLE. ( #1 ENGINE )<[ (N486WN)
- [SDR 2024FA0000827](https://openairdocs.org/sdr/2024FA0000827), Nov 8, 2024: Airbus AS332L1. TRANS RECTIFIER. GROUNDED. BOTH TRANSFORMER RECTIFIERS (TRUS) WENT OFFLINE (CIRCUIT BREAKERS POPPED) DURING AN AERIAL FIREFIGHTING MISSION. THIS AC (N332X)
- [SDR IXXA202407086048](https://openairdocs.org/sdr/IXXA202407086048), Jul 6, 2024: Boeing 767338. TRANS RECTIFIER. FAULTED. UPON POWER APPLICATION ON TAXI STRONG ELECTRICAL SMOKE AND FUMES, MULTIPLE DISCRETE LIGHTS HALF LIT, INDICATOR LIGHT 1 B (N503AZ)
- [SDR IXXA20240803055](https://openairdocs.org/sdr/IXXA20240803055), Jul 2, 2024: Boeing 76736N. GENERATOR. FAULTED. ENROUTE FROM KCLT TO KSBD R GEN DRIVE MESSAGE DISPLAYED ON EICAS FL340. APU INOPERATIVE DUE TO SYSTEM ACTIVELY IN DEFERR (N1049A)
- [SDR 2023FA0000845](https://openairdocs.org/sdr/2023FA0000845), Dec 14, 2023: Cessna 172N. VOLT REGULATOR. FAILED. VOLTAGE REGULATOR FAIL AFTER 66.2 HOURS OF OPERATION. AFTER REMOVAL FROM AIRCRAFT NOTICED TWO PART NUMBER STICKERS OVERL (N734UL)
- [SDR 2023FA0000812](https://openairdocs.org/sdr/2023FA0000812), Dec 6, 2023: Diamon DA42. TENSIONER. DESTROYED. DURING FLIGHT THE PILOTS RECEIVED AN ALTERNATOR FAILURE FOR THE RH ALTERNATOR. UPON INSPECTION I NOTICED THE TENSIONER P (N350TS)
- [SDR ASAA2023102845898](https://openairdocs.org/sdr/ASAA2023102845898), Oct 28, 2023: Boeing 7379. VALVE. LEAKING. #2 ENGINE IDG HAS HISTORY OF FREQUENT OIL SERVICING. (#PRI2/ETOPS). GROUNDED - YES. (RESOLVED ON W/O: 1975026 TASKCARD:  (N974AK)
- [SDR ASAA2023103045855](https://openairdocs.org/sdr/ASAA2023103045855), Oct 25, 2023: Boeing 737990ER. IDG. FAULTED. #1 GENERATOR CAME OFF LINE DURING DESCENT AND WOULDNT RESET. SOURCE OFF LIGHT GEN OFF. BUS LIGHT. GROUNDED - YES. PERFOR (N459AS)
- [SDR ASAA2023101245641](https://openairdocs.org/sdr/ASAA2023101245641), Oct 12, 2023: Boeing 737990ER. UNKNOWN. UNKNOWN. #1 DRIVE LIGHT NOT ILLUMINATED WITH ENGINE SHUT DOWN. LIGHT ILLUMINATES DURING LIGHT TEST. GROUNDED - YES. ON DEFERRAL. (N409AS)
- [SDR ASAA2023092845423](https://openairdocs.org/sdr/ASAA2023092845423), Sep 28, 2023: Boeing 737990ER. COOLER. LEAKING. TECH SERVICES FOLLOW-UP TO IDG #2 CONTINUED FREQUENT SERVICING---(#PR2)--- *** ETOPS SIGNIFICANT SYSTEM ***. GROUNDED -  (N462AS)
- [SDR ASAA2023092745582](https://openairdocs.org/sdr/ASAA2023092745582), Sep 27, 2023: Boeing 737900ER. IDG. LEAKING. FOLLOW-UP TO #2 IDG FREQUENT SERVICING----(#PRI2)-----ETOPS SIGNIFICANT SYSTEM----. GROUNDED - YES. #2 ENG IDG WAS REMOV (N403AS)
- [SDR ASAA2023092245276](https://openairdocs.org/sdr/ASAA2023092245276), Sep 22, 2023: Boeing 7379. UNKNOWN. UNKNOWN. #2 IDG DRIVE LIGHT NOT ILLUMINATED WITH ENGINE NOT RUNNING WORKS WITH LIGHT TEST. GROUNDED - YES. ON DEFERRAL. (N960AK)
- [SDR ASAA2023091345197](https://openairdocs.org/sdr/ASAA2023091345197), Sep 13, 2023: Boeing 737990ER. VALVE. LEAKING. FOLLOW-UP TO #2 IDG FREQUENT SERVICING----(#PRI2)-----ETOPS SIGNIFICANT SYSTEM----. GROUNDED - YES. (RESOLVED ON W/O: 19 (N462AS)
- [SDR ASAA2023082244733](https://openairdocs.org/sdr/ASAA2023082244733), Aug 22, 2023: Boeing 7379. UNKNOWN. UNKNOWN. #2 IDG DRIVE LIGHT DOES NOT ILLUMINATE WITH THE #2 ENGINE SHUTDOWN. GROUNDED - YES. ON DEFERRAL. (N932AK)
- [SDR ASAA2023072344164](https://openairdocs.org/sdr/ASAA2023072344164), Jul 23, 2023: Boeing 737890. UNKNOWN. UNKNOWN. LT ENGINE DRIVE LIGHT INTERMITTENT. GROUNDED - YES. (RESOLVED ON W/O: 1962955 TASKCARD: N/R-00001 ) RESISTANCE CKS FOR C (N533AS)
- [SDR ASAA2023072144163](https://openairdocs.org/sdr/ASAA2023072144163), Jul 21, 2023: Boeing 7379. UNKNOWN. UNKNOWN. ENG 2 DRIVE LIGHT NOT ILLUMINATED. GROUNDED - YES. PERFORMED #2 IDG OPS CHECK IAW AMM 24-11-00 OPS CK GOOD SEAMC DAVE NO (N946AK)
- [SDR ASAA2023062543755](https://openairdocs.org/sdr/ASAA2023062543755), Jun 25, 2023: Boeing 7379. UNKNOWN. UNKNOWN. #2 GEN DRIVE WILL INTERMITTANTLY NOT ILLUMINATE WITH ENGINE OFF(PRI 2). GROUNDED - YES. REF IFIM TASK 24-11-00-810-804 P (N946AK)
- [SDR ASAA2023062443714](https://openairdocs.org/sdr/ASAA2023062443714), Jun 24, 2023: Boeing 7379. UNKNOWN. UNKNOWN. ENG #2 DRIVE LIGHT DID NOT ILLUMINATE EXCEPT IN TEST. GROUNDED - YES. ON DEFERRAL. (N946AK)
- [SDR ASAA2023062143676](https://openairdocs.org/sdr/ASAA2023062143676), Jun 21, 2023: Boeing 7379. UNKNOWN. UNKNOWN. #2 DRIVE LIGHT NOT ILLUMINATED EXCEPT DURING LIGHT TEST. GROUNDED - YES. PERFORMED GCU #2 BITE TEST . REF AMM 24-21-81.  (N946AK)
- [SDR 2023FA0000279](https://openairdocs.org/sdr/2023FA0000279), May 26, 2023: Gippld GA8TC320. ALTERNATOR. UNKNOWN. EN ROUTE THE CREW BEGAN TO NOTICE AN ALTERNATOR FAILURE WARNING SIGNALS WENT OFF. CREW NOTIFIED ATC TO BEGIN HEADING BAC (N140H)
- [SDR 2023FA0000305](https://openairdocs.org/sdr/2023FA0000305), May 13, 2023: Cessna T210L. ALTERNATOR. FAILED. N4678Q, C210, DECLARED AN EMERGENCY DUE TO POSSIBLE ELECTRICAL ISSUE. THE FLIGHT LANDED SAFELY WITHOUT ISSUE. (N4678Q)
- [SDR DALA2023051503798](https://openairdocs.org/sdr/DALA2023051503798), May 13, 2023: Airbus A320212. UNKNOWN. UNKNOWN. SHIP 3250 - ATO - AT APPROXIMATELY 40 KNOTS DUE TO ELEC IDG 1 LO OIL PR ECAM MSG. CORRECTIVE ACTION: FOUND IDG #1 OIL LO (N350NA)
- [SDR ASAA2023050343095](https://openairdocs.org/sdr/ASAA2023050343095), May 3, 2023: Boeing 7379. FILTER. CLOGGED. FOUND #1 IDG DPI POPPED DURING WALK AROUND. GROUNDED - YES. INSPECTED AND REPLACED IDG SCAVENGE AND CHARGE FILTERS, NO D (N291BT)
- [SDR ASAA2023042743048](https://openairdocs.org/sdr/ASAA2023042743048), Apr 27, 2023: Boeing 737890. IDG. FAILED. GEN NO.1 CAME OFF LINE DURING DESCENT AND WOULD NOT RECONNECT TO THE BUS. APU WAS STARTED IAW QRH AND WAS CONNECTED TO T (N589AS)
- [SDR VNAA202304121112](https://openairdocs.org/sdr/VNAA202304121112), Apr 10, 2023: Cndair CL6002C10. UNKNOWN. UNKNOWN. SPARKS COMING ELECTRICAL POWER CONTROL PANEL / INSTALLED ELECTRICAL CONTROL PANEL IAW CRJ 700 AMM 24-13-01-400-800-A01.  (N526EA)
- [SDR ASAA2023040142721](https://openairdocs.org/sdr/ASAA2023040142721), Apr 1, 2023: Boeing 737990ER. IDG. UNKNOWN. ON WALK AROUND FOUND #1 ENG IDG NO OIL IN SIGHT GLASS. GROUNDED - YES. REMOVE AND INSTALLED #1 IDG REF AMM 24-11-11. (N457AS)
- [SDR DALA2023032902405](https://openairdocs.org/sdr/DALA2023032902405), Mar 23, 2023: Airbus A321211. UNKNOWN. UNKNOWN. SHIP 3017 - ATO - AT 100KTS DUE TO NBR 1 ENGINE IDG LOW OIL PRESSURE FAULT MESSAGE. CORRECTIVE ACTION: DEFERRED #1 IDG P (N317DN)
- [SDR DALA2023032102153](https://openairdocs.org/sdr/DALA2023032102153), Mar 20, 2023: Boeing 737932ER. IDG. INOPERATIVE. SHIP 3861 -ATB- DUE TO BIRD STRIKE ON DEPARTURE. LEFT ENGINE GENERATOR INOP. CORRECTIVE ACTION: PERFORMED GCU BITE CHECK (N861DN)
- [SDR DALA2023032002086](https://openairdocs.org/sdr/DALA2023032002086), Mar 18, 2023: Airbus BD5001A10. UNKNOWN. UNKNOWN. SHIP 8115 - DIV - TO LAS DUE TO "L GEN FAIL" CATION MESSAGE FOLLOWED BY "APU FAIL" WARNING MESSAGE. CORRECTIVE ACTION: R (N115DU)
- [SDR ASAA2023031642381](https://openairdocs.org/sdr/ASAA2023031642381), Mar 16, 2023: Boeing 7379. UNKNOWN. UNKNOWN. ON PREFIGHT THE #2 IDG CONTROL CB POPPED. GROUNDED - YES. PERFORMED C/B RESET REF B737-9 AMM 20-60-01 C/B DID NOT REOPEN (N937AK)
- [SDR ASAA2023031542457](https://openairdocs.org/sdr/ASAA2023031542457), Mar 15, 2023: Boeing 7379. UNKNOWN. FAULTY. #2 IDG "DRIVE" LIGHT EXTINGUISHED WITH ENGINE STOPPED, WORKS ON LIGHT TEST NORMALLY. GROUNDED - YES. REMOVED AND REPLACE (N937AK)
- [SDR ASAA2023030842262](https://openairdocs.org/sdr/ASAA2023030842262), Mar 8, 2023: Boeing 737990ER. IDG. LEAKING. OIL RESIDUE ON #1 ENGINE COWLING AND SMALL OIL PUDDLE ON GROUND BENEATH #1 ENGINE. GROUNDED - YES. PERFORMED B737-900 AM (N433AS)
- [SDR ASAA2023030642208](https://openairdocs.org/sdr/ASAA2023030642208), Mar 6, 2023: Boeing 737990ER. IDG. FAULTY. #2 ENG SOURCE OFF LIGHT FOLLOWED BY DRIVE LIGHT ILLUMINATED DURING TAXI. DRIVE QRC ACCOMPLISHED. GROUNDED - YES. REMOVED (N474AS)
- [SDR ASAA2023022842119](https://openairdocs.org/sdr/ASAA2023022842119), Feb 28, 2023: Boeing 737890. IDG. FAILED. AFTER START GEN 2 WOULD NOT CONNECT TO TRANSFER BUS. GROUNDED - YES. REMOVED AND REPLACED #2 ENG IDG REF B737-800 AMM 24 (N516AS)
- [SDR ASAA2023022342065](https://openairdocs.org/sdr/ASAA2023022342065), Feb 23, 2023: Boeing 737890. IDG. LEAKING. #1 ENGINE LEAKING HYDRALIC FLUID. GROUNDED - YES. PERFORMED #1 ENGINE IDG OIL SYSTEM STATIC LEAK PER B737-800 AMM 24-11- (N593AS)
- [SDR DALA2023022201313](https://openairdocs.org/sdr/DALA2023022201313), Feb 17, 2023: Boeing 767332. NONE. NONE. SHIP 1606 -ATO- DUE TO LT GEN OFF INDICATION. CORRECTIVE ACTION: MEL APPLIED. IDG R/R NEXT MTC OPPORTUNITY. COOLER R/R O (N16065)
- [SDR ASAA2023020741859](https://openairdocs.org/sdr/ASAA2023020741859), Feb 7, 2023: Boeing 737890. IDG. LEAKING. FOLLOW-UP TO #1 IDG FREQUENT SERVICING, ACCOMPLISHED STATIC LEAK TEST REF B737-800 AMM 24-11-00-700-801. FOUND LEAK COMI (N516AS)
- [SDR ASAA2023012941751](https://openairdocs.org/sdr/ASAA2023012941751), Jan 29, 2023: Boeing 737890. IDG. FAULTY. #1 GEN DRIVE LIGHT IS GOING OUT AND COMING BACK ON CAUSING MASTER CAUTION ELEC LIGHT WITH #1 ENG OFF. GROUNDED - YES. RE (N508AS)
- [SDR CALA2022122803504](https://openairdocs.org/sdr/CALA2022122803504), Dec 26, 2022: Boeing 777224. RECEPTACLE. DAMAGED. PRY EXT POWER PINS WITH SIGNS OF OVERHEAT AFTER GPU CABLE FAILURE. REMOVED AND REPLACED PRIMARRY EXTERNAL POWER RECEPTIC (N69020)
- [SDR DALA2022110707200](https://openairdocs.org/sdr/DALA2022110707200), Nov 6, 2022: Boeing 757232. NONE. NONE. SHIP 0699 - DIV - INTO CVG DUE TO THE LOSS OF THE RIGHT GENERATOR WHILE THE APU WAS ON MEL. CORRECTIVE ACTION: REPLACED  (N699DL)
- [SDR ABXA20221019116](https://openairdocs.org/sdr/ABXA20221019116), Oct 17, 2022: Boeing 767231. CONTROL UNIT. NONE. AFTER PUSH LH GENERATOR DISCONNECTED. AIRCRAFT BACK TO BLOCK AND GROUNDED BY MAINTENANCE. MAINTENANCE RESET LEFT HAND GE (N651GT)
- [SDR AALA202210185155](https://openairdocs.org/sdr/AALA202210185155), Oct 16, 2022: Airbus A319112. IDG. NONE. AIRCRAFT WAS GROUNDED: FLIGHT CREW REPORTED AN ELECTRICAL GENERATOR 2 FAULT MESSAGE AND 10 MINUTES LATER REPORTED THAT T (N758US)
- [SDR SWAA2022101057920](https://openairdocs.org/sdr/SWAA2022101057920), Oct 8, 2022: Boeing 7377CT. GENERATOR. FAULTY. #1 IDG LIGHT ILLUMINATED ON TOUCHDOWN; EXTINGUISHED AFTER SLOWING BELOW 60 KIAS. 02OCT: SERVICED IDG PER AMM 12-13-21.PE (N7825A)
- [SDR ASAA2022092940082](https://openairdocs.org/sdr/ASAA2022092940082), Sep 29, 2022: Boeing 737890. IDG. FAULTY. #2 DRIVE LIGHT ILLUMINATED ON CLIMB OUT. GROUNDED - YES. REMOVED AND REPLACED #2 IDG REF B737-800 AMM 24-11-11. (N587AS)
- [SDR ASAA2022092840090](https://openairdocs.org/sdr/ASAA2022092840090), Sep 28, 2022: Boeing 737890. SEAL. LEAKING. #1 ENGINE OIL TREND DATA SHOWS OIL CONSUMPTION TO GREATER THAN EXPECTED. ENGINE POWER RUN REQUIRED. GROUNDED - YES. FOUN (N583AS)
- [SDR DALA2022092606299](https://openairdocs.org/sdr/DALA2022092606299), Sep 23, 2022: Boeing 757232. NONE. NONE. SHIP 675 - DIV - TO CVG DUE TO LOSS OF RIGHT ENGINE GENERATOR WITH APU ON MEL. CORRECTIVE ACTION: REPLACED GCU AND RT ID (N675DL)

All 891: https://openairdocs.org/jasc/2410/reports.md

## Other codes in chapter 24

- [JASC 2400](https://openairdocs.org/jasc/2400): Electrical Power System (1,186 reports)
- [JASC 2420](https://openairdocs.org/jasc/2420): AC Generation System (1,302 reports)
- [JASC 2421](https://openairdocs.org/jasc/2421): AC Generator-Alternator (4,272 reports)
- [JASC 2422](https://openairdocs.org/jasc/2422): AC Inverter (557 reports)
- [JASC 2423](https://openairdocs.org/jasc/2423): Phase Adapter (15 reports)
- [JASC 2424](https://openairdocs.org/jasc/2424): AC Regulator (480 reports)
- [JASC 2425](https://openairdocs.org/jasc/2425): AC Indicating System (137 reports)
- [JASC 2430](https://openairdocs.org/jasc/2430): DC Generating System (1,120 reports)
- [JASC 2431](https://openairdocs.org/jasc/2431): Battery Overheat Warning System (82 reports)
- [JASC 2432](https://openairdocs.org/jasc/2432): Battery/Charger System (2,249 reports)
- [JASC 2433](https://openairdocs.org/jasc/2433): DC Rectifier/Converter (197 reports)
- [JASC 2434](https://openairdocs.org/jasc/2434): DC Generator-Alternator (849 reports)
- [JASC 2435](https://openairdocs.org/jasc/2435): Starter-Generator (2,052 reports)
- [JASC 2436](https://openairdocs.org/jasc/2436): DC Regulator (313 reports)
- [JASC 2437](https://openairdocs.org/jasc/2437): DC Indicating System (98 reports)
- [JASC 2440](https://openairdocs.org/jasc/2440): External Power System (169 reports)
- [JASC 2450](https://openairdocs.org/jasc/2450): AC Power Distribution System (872 reports)
- [JASC 2460](https://openairdocs.org/jasc/2460): DC Power Distribution System (608 reports)
- [JASC 2497](https://openairdocs.org/jasc/2497): Electrical Power System Wiring (2,202 reports)

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