# SDR ASAA2025071259392

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 12, 2025
- Submitted: July 15, 2025
- Operation: Air carrier
- Aircraft: [N481AS](https://openairdocs.org/aircraft/N481AS), registered now
- Make and model: Boeing 737990ER
- Aircraft serial: 44106
- Aircraft time: 36,868 hours, 11,417 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Battery Pack
- Part number: D71701100
- 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/ASAA2025071259392

## Discrepancy

DURING T/C 78233008 FOUND EXT OVERWING EMERGENCY EXIT LT FOR LH WING INOP. GROUNDED - YES. THERE WERE SEVERAL EMERGENCY LIGHTS OUT. REMOVED AND REPLACED BATTERY PACK M2335 IAW AMM 33-51-06-960-805, OPS CHECKS GOOD. CLEARS MEL 33-14C, SEAMC NOTIFIED. NO AIRCRAFT CONFIGURATION CHANGE.

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