# SDR CALA2026090419232

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 1, 2026
- Submitted: September 4, 2026
- Operation: Air carrier
- Aircraft: [N37542](https://openairdocs.org/aircraft/N37542), registered now
- Make and model: Boeing 737-9
- Registry model: [Boeing 737-9](https://openairdocs.org/model/boeing-737-9) (OpenAirDocs)
- Aircraft serial: 64470
- Aircraft time: 13,383 hours, 4,501 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: V
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CALA2026090419232

## Discrepancy

EMERGENCY LIGHTS INOP ON ALL FIRST-CLASS SEATS.  REPLACED POWER SUPPLY AND BATTERY IAW AMM 33-51-06. OPS CHECK GOOD.

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