# SDR CHQA201000073

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 8, 2010
- Submitted: April 12, 2010
- Operation: Air carrier
- Aircraft: N279SK
- Make and model: Emb EMB-145LR
- Registry model: [EMB EMB-145LR](https://openairdocs.org/model/embraer-emb-145lr) (OpenAirDocs)
- Aircraft serial: 145379
- Aircraft time: 23,698 hours, 19,391 cycles
- Engine: Allsn AE3007A
- Engine time: 12,895 hours, 10,146 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Inverter
- Part number: 78241
- Condition: Defective
- Location: Cabin
- Stage of operation: IN
- How discovered: C
- Nature of condition: L
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CHQA201000073

## Discrepancy

DURING INSPECTION THE LAST TWO ROWS OF EMERGENCY FLOOR LIGHT STRIPS WERE INOPERATIVE.  MAINTENANCE FOUND MULTIPLE FUSES IN BATTERY NR 4 BLOWN AND INVERTER NR 6 PRODUCING A HIGH PITCHED WHINE.  THE NR 4 BATTERY PACK AND NR 6 INVERTER WERE REPLACED WITH NO FURTHER DEFECTS NOTED.  BATTERY NR 4: P/N: 100865, S/N: C01798, TSN: 13293, CSN: 10906, TSR: 1926.

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