# SDR ASOA2020040104009

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 30, 2020
- Submitted: April 1, 2020
- Operation: Air carrier
- Aircraft: [N11536](https://openairdocs.org/aircraft/N11536), registered now
- Make and model: Emb EMB-145LR
- Registry model: [EMB EMB-145LR](https://openairdocs.org/model/embraer-emb-145lr) (OpenAirDocs)
- Aircraft serial: 145520
- Aircraft time: 42,701 hours, 33,320 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Battery Pack
- Part number: AD20131A
- Part serial: 118999
- Condition: Discharged
- Location: Cabin
- Part time: 16,129 hours, 11,365 cycles
- 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/ASOA2020040104009

## Discrepancy

IAH DURING PREFLIGHT INSPECTION THE EMERGENCY LIGHTS AFT OF THE EMERGENCY ROW WERE FOUND TO BE INOPERATIVE. MAINTENANCE REMOVED AND REPLACED THE EMERGENCY LIGHT POWER SUPPLIES AND BATTERY PACKS #3 AND #4. EMERGENCY LIGHTS WERE OPERATIONALLY TESTED WITH NO DEFECTS AND THE AIRCRAFT WAS APPROVED FOR RETURN TO SERVICE.

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