# SDR ASAA2026020264103

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 2, 2026
- Submitted: February 3, 2026
- Operation: Air carrier
- Aircraft: [N402AS](https://openairdocs.org/aircraft/N402AS), registered now
- Make and model: Boeing 737990ER
- Aircraft serial: 41189
- Aircraft time: 48,730 hours, 15,326 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/ASAA2026020264103

## Discrepancy

DURING T/C 78233001, FOUND R2 & L2 EMERGENCY LIGHTS INOPERATIVE.  GROUNDED - YES.  R & R THE EMERGENCY LIGHT R2 & L2 BATTERY PACK IAW AMM 33-51-06/401.  OPS CHECKED REQUIRED. REPLACED THE LAMPS R2 SLIDE/OVERWING LIGHT IAW AMM 33-51-04.  OPS TESTED GOOD.

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