# SDR MZZA2010063000314

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 29, 2010
- Submitted: July 21, 2010
- Operation: Air carrier
- Aircraft: [N27734](https://openairdocs.org/aircraft/N27734), registered now
- Make and model: Boeing 737724
- Aircraft serial: 28949
- Aircraft time: 37,014 hours, 12,097 cycles
- System (JASC): [2424 · AC Regulator](https://openairdocs.org/jasc/2424)
- Part: Gcu
- Part number: 762185H
- Part serial: 1269
- Condition: Failed
- Location: Nr 2
- Stage of operation: CR
- How discovered: O
- Nature of condition: B
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/MZZA2010063000314

## Discrepancy

ELECTRICAL SOURCE OFF LIGHT AND DRIVE LIGHT ON NR 2 GEN SMELL OF ACRID, SMOKE POSSIBLE OIL OR ELECTRICAL SOURCE.  PERFORMED INSP PER AMM 05-51-26.  FOUND NR 2 GCU BURNED OUT.  CHECKED WIRING & NO EVIDENCE OF HEAT DAMAGED.  REPLACED NR 2 GCU AND PERFORMED TEST OK PER AMM 24-21-81-000-801/-400-801.  ROTABLE PARTS CHANGE WAS INDICATED - TT 7390850, S/N OFF 01269 UNIT, GENERATOR  OFF 29-2421-9-0002 1269 ON 29-2421-9-0002 1348.

---
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.