# SDR CALA2025092909354

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 28, 2025
- Submitted: September 29, 2025
- Operation: Air carrier
- Aircraft: [N57439](https://openairdocs.org/aircraft/N57439), registered now
- Make and model: Boeing 737924ER
- Aircraft serial: 33534
- Aircraft time: 51,666 hours, 18,351 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Battery Pack
- Part number: ADD71701100
- Condition: Faulted
- 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/CALA2025092909354

## Discrepancy

ROW 1EF-7DEF OVERHEAD BIN EMERGENCY LIGHTS INOPERATIVE.  REPLACED ROW 1EF-7DEF OVERHEAD BIN EMERGENCY LIGHTS BATTERY PACK AND POWER SUPPLY POSITION M1676 IAW AMM 33-51-06, OPS CHECK GOOD,  NO DEFECTS NOTED.  ACFT OK TO CONTINUE SERVICE.

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