# SDR MALA010434

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 1, 2001
- Submitted: May 4, 2001
- Operation: Air carrier
- Aircraft: N991XJ
- Make and model: Saab SF340A
- Registry model: [Saab SF340A](https://openairdocs.org/model/saab-scania-sf340a) (OpenAirDocs)
- Aircraft serial: 091
- System (JASC): [2424 · AC Regulator](https://openairdocs.org/jasc/2424)
- Part: Gcu
- Part number: 51539007B
- Part serial: 98658
- Condition: Defective
- Location: Lt Engine
- Stage of operation: CR
- How discovered: O
- Nature of condition: J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/MALA010434

## Discrepancy

LEFT DC GEN FAILED INFLIGHT, AIR RETURN TO DTW FOR LEFT DC GENERATOR OFFLINE.  MAINTENANCE REPLACED LEFT DC GCU P/N 51539-007B, S/N ON 98658 IAW SAAB 340 AMM CHAP 24-31.  OPS CHECK GOOD.

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