# SDR ASAA2026042865774

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 28, 2026
- Submitted: May 1, 2026
- Operation: Air carrier
- Aircraft: [N263AK](https://openairdocs.org/aircraft/N263AK), registered now
- Make and model: Boeing 737990ER
- Aircraft serial: 62471
- Aircraft time: 34,000 hours, 11,114 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: V
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2026042865774

## Discrepancy

LH FORWARD EMERGENCY LIGHTS INOP. (ROWS 1-13). GROUNDED - YES. REMOVED AND REPLACED EMERGENCY BATTERY PACK AT LOCATION 7ABC. IAW AMM 33-51-06. OPS CHECK OK. 4APR676B.

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