# SDR CALA2025042504228

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 24, 2025
- Submitted: April 25, 2025
- Operation: Air carrier
- Aircraft: [N76532](https://openairdocs.org/aircraft/N76532), registered now
- Make and model: Boeing 737824
- Aircraft serial: 62749
- Aircraft time: 27,895 hours, 10,231 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Power Supply
- Part number: AD71701100
- Condition: Failed
- 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/CALA2025042504228

## Discrepancy

EMERGENCY LIGHT POWER SUPPLY M1673 FAIL FUNTIONAL CHECK. (REF AAR NR 1000032270). REMOVED AND INSTALLED NEW BATTERY PACK (M1973) IAW B737 AMM 33-51-06-960-805 AND INSTALL TEST GOOD.  REMOVED AND INSTALLED NEW BATTERY PACK (M1973) IAW B737 AMM 33-51-06-960-805 AND INSTALL TEST GOOD.

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