# SDR CALA2025091008715

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 9, 2025
- Submitted: September 10, 2025
- Operation: Air carrier
- Aircraft: [N73445](https://openairdocs.org/aircraft/N73445), registered now
- Make and model: Boeing 737924ER
- Aircraft serial: 40000
- Aircraft time: 45,254 hours, 16,489 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Battery Pack
- Condition: Discharged
- 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/CALA2025091008715

## Discrepancy

EMERGENCY FLOOR PROXIMITY LIGHTS FROM ROW 28 TO 34 INOPERATIVE IAW FIM 33-50 TASK 801. R & R EMERGENCY EXIT LIGHT BATTERY PACK & POWER SUPPLIES M1670 AND M1671 REF AMM 33-51-06. CHRGED BATERRY PACK FOR 90 MINUTES. NO HELP. PUT OLD BATTERY PACKS AND POWER SUPPLIES BACK TO ORIGINAL POSITION. CHECK CB FOR MID EMERGENCY LIGHTS AT P-18 PANEL. CB HAS PROPER VOLTAGE INSTALLED NEW BATTERIES AND CHARGERS M1670 AND M1671 REF AMM 33-51-06. NO HELP. REQUIRES MORE TROUBLESHOOTIMG AFTER LETTING BATTERY PACKS CHARGE EMERGENCY LIGHTS CHECKED GOOD PER AMM33-51-00-710-801.

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