# SDR CALA2026012013117

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 20, 2026
- Submitted: January 21, 2026
- Operation: Air carrier
- Aircraft: [N72405](https://openairdocs.org/aircraft/N72405), registered now
- Make and model: Boeing 737924
- Aircraft serial: 30122
- Aircraft time: 67,652 hours, 28,397 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Battery Pack
- Part number: ADD71701100
- Condition: No Test
- 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/CALA2026012013117

## Discrepancy

DURING THE EMERGENCY LIGHT BATTERY CAPACITY TEST PER AMM 33-51-06-200-801, FLOOR PROX LIGHTS AT ROW 1-4 AND 7-15 FAILED THE REQUIREMENT.  BATTERY PACKS AT M1674 AND M2503 NEEDS TO BE REPLACED. PARTS ARE PLACED ON AOG. REMOVED AND REPLACED BOTH EMERGENCY SUPPLY BATTERY PACKS M1674 AND M2503 IAW AMM 33-51-06, OPS CHECK GOOD.

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