# SDR HAEA200500181

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 14, 2005
- Submitted: August 25, 2005
- Operation: Air carrier
- Aircraft: [N158TW](https://openairdocs.org/aircraft/N158TW), registered now
- Make and model: Amd FALCON
- Aircraft serial: 158
- Engine: Ge CF7002D2
- System (JASC): [2420 · AC Generation System](https://openairdocs.org/jasc/2420)
- Part: Gcu
- Part number: 3S2060DC168B1
- Part serial: 6548212M1
- Condition: Failed
- Location: Radio Cabinet
- Part time: 4,060 hours
- Stage of operation: CR
- How discovered: O
- Nature of condition: H, J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/HAEA200500181

## Discrepancy

ENROUTE, AT FL280, BATTERY BUS ANNUNCIATOR LIGHT ILLUMINATED.  RESET BUS IAW CHECKLIST AND REDUCED ELECTRICAL LOAD.  PROBLEM CORRECTED FOR A FEW MINUTES FOLLOWED BY LOSS OF NR 1 GEN LIGHT.  ATTEMPTED RESET OF NR 1 GEN UNSUCCESSFUL.  NR 1 GEN WAS SHUT OFF AND ELECTRICAL LOAD FURTHER REDUCED.  AFTER A FEW MINUTES NR 2 GEN LIGHT ILLUMINATED.  CREW CONTACTED AIRPORT AND INFORMED OF MECHANICAL DIFFICULTIES.  AIRCRAFT DIVERTED, NO EMERGENCY DECLARED.  AIRCRAFT LANDED WITHOUT INCIDENT.  MAINTENANCE DISPATCHED FOR REPAIR.  FOUND NR 1 AND NR 2 GCU FAILED AND NR 2 GENERATOR FAULTY.  REPLACED AND NR 1 AND NR 2 GCU, REPLACED NR 2 STARTER/GENERATOR.  GROUND OPS GOOD.  (K)

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.