# SDR ASAA2023010141409

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 1, 2023
- Submitted: January 5, 2023
- Operation: Air carrier
- Aircraft: [N491AS](https://openairdocs.org/aircraft/N491AS), registered now
- Make and model: Boeing 737990ER
- Aircraft serial: 44109
- Aircraft time: 26,535 hours, 8,340 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Light
- Part number: 912000
- Condition: Inoperative
- Location: Main Passenger C
- Stage of operation: IN
- How discovered: V
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2023010141409

## Discrepancy

DURING ACCOMPLISHMENT OF ASA T/C 78233008 "EMERGENCY LIGHTS-OPS CHECK" EMERGENCY ISLE LIGHT AT SEAT ROWS 25DEF AND 30DEF ARE INOP OPPOSITE ISLE EMERGENCY LIGHT OPS CHECKED NORMAL. GROUNDED - YES. VERIFIED DISCREP. FOUND EMERGENCY BATTERY PACK TO SAME INOP LIGHTS BAD. REF. B737-900 AMM 33-51-06, REMOVED/REPLACED EMERGENCY BATTERY PACK.

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