# SDR DXTA2026011206487

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 8, 2026
- Submitted: January 12, 2026
- Operation: Air carrier
- Aircraft: [N679QS](https://openairdocs.org/aircraft/N679QS), registered now
- Make and model: Cessna 680A
- Registry model: [Cessna 680A](https://openairdocs.org/model/cessna-680a) (OpenAirDocs)
- Aircraft serial: 680A0257
- Aircraft time: 6,064 hours, 3,992 cycles
- System (JASC): [2430 · DC Generating System](https://openairdocs.org/jasc/2430)
- Part: Pcb
- Part number: 676815024
- Part serial: 0340
- Condition: Faulty
- Location: Power Dist
- Stage of operation: TO
- How discovered: O
- Nature of condition: G
- Precautionary procedure: C
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/DXTA2026011206487

## Discrepancy

THE LT DC GEN OFF L AMBER CAS MESS APPEARED RIGHT AT ABOUT 90-100 KTS ON TAKE OFF ROLL, ARES DATA SENT TO TEXTRON ON 1/8 AT 1645.EZ1/8 PERFORMED ENG RUNS VERIFIED NR 1 GEN WILL NOT COME ONLINE, PERFORMED GCU FAULT CHK IAW AMM 24-30-45 NOTED SYS LIGHT ON STEADY, INDICATES BUILD UP GROUND FAULT.   SYNOPTIC SHOWS 29V AVALLABLE AT LT GEN BUT 0 AMPS, CYDING GEN RESET SWITCH HAS NO EFFECT ON THE FALL. ML 1/8 REPOSITLONED NR 1 ENG GCU TO APU POSI & APU GCU TO NR 1 POS IAW AMM 24-30-45. PERFORMED GEN OPS CHK IAW AMM 80-10-20,  NO CHANGE TO DEFECT.  RETURNED GCUS TO ORIG POS. REPOSITIONED LT GEN LINE CONTACTOR TO RT POS & RT GEN LINE CONTACTOR TO LT SIDE IAW AMM 24-60-10.  PERFORMED GEN OPS CHECK IAW AMM 80-10-20 WITH NO CHANGE TO DEFECT.  RETURNED GEN IINE CONTACTORS TO ORIG POS. REPOSITLONED LT POWER DIST PCB TO RT POS & RT POWER DIST PCB TO LT POS IAW AMM 24-60-35. PERFORMED GEN, OPS CHECK IAW AMM 80-10-20,  RT GEN WILL NO LONGER COME ONLINE. RETURNED POWER DIST PCBS TO ORIG POS. R & R LT POWER DIST PCB NZ103 IAW AMM 24-60-35. OPS CHKD GOOD, NO FURTHER ACTION REQUIRED.

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