# SDR ASAA2024121654618

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 16, 2024
- Submitted: December 17, 2024
- Operation: Air carrier
- Aircraft: [N419AS](https://openairdocs.org/aircraft/N419AS), registered now
- Make and model: Boeing 737990ER
- Aircraft serial: 41734
- Aircraft time: 43,397 hours, 13,598 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Battery Pack
- Part number: ADD71701100
- Condition: Inoperative
- Location: Zone 200
- 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/ASAA2024121654618

## Discrepancy

DURING T/C 78233008, FOUND RH OVERWING EMERGENCY EXIT SIGNS NOT ILLUMINATING. GROUNDED - YES. REMOVED AND REPLACED BATTERY PACK RELATED TO THE AFFECTED LIGHTS REF AMM 33-51-06. OPS CHECK GOOD. 1EA MIG 51A INSTALLED/REMOVED.

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