# SDR CHQA201100478

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 12, 2011
- Submitted: December 13, 2011
- Operation: Air carrier
- Aircraft: N291SK
- Make and model: Emb EMB-145LR
- Registry model: [EMB EMB-145LR](https://openairdocs.org/model/embraer-emb-145lr) (OpenAirDocs)
- Aircraft serial: 145486
- Aircraft time: 25,485 hours, 20,656 cycles
- Engine: Allsn AE3007A
- Engine time: 22,057 hours, 19,681 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Battery
- Part number: RPS1B
- Part serial: 14279
- Condition: Discharged
- Location: Cabin
- Part time: 36,952 hours, 31,329 cycles
- Stage of operation: IN
- How discovered: C
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CHQA201100478

## Discrepancy

CREW REPORTED THAT THE EMERGENCY LIGHTS WERE ONLY PARTIALLY ILLUMINATED AND THAT THEY WOULD NOT EXTINGUISH WHEN CYCLING THE SWITCH.  MAINTENANCE REPLACED THE NUMBER 3 EMERGENCY BATTERY.  OPERATIONAL CHECKS WERE GOOD WITH NO FURTHER DEFECTS NOTED.

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