# SDR CALA2026042915848

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 29, 2026
- Submitted: April 29, 2026
- Operation: Air carrier
- Aircraft: [N75425](https://openairdocs.org/aircraft/N75425), registered now
- Make and model: Boeing 737924ER
- Aircraft serial: 33460
- Aircraft time: 55,171 hours, 19,736 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Battery Pack
- Part number: ADD71701100
- Condition: Faulty
- 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/CALA2026042915848

## Discrepancy

EXTERIOR LIGHT BY LEFT FWD DOOR, SIDE LT FWD DOOR LIGHT, ABOVE LT FWD DOOR LIGHT AND ABOVE COCKPIT DOOR LIGHT, EMERGENCY LIGHTS OUT SWAPED BATTERY PACKS IN THE FWD POSITION FOR TROUBLE SHOOTING, ALL EMERGANCY LIGHTS WORKED THAT WERE PREVIOUSLY INOP, PROBLEM OF INOP LIGHTS FOLLOWED TO THE RIGHT FWD DOOR, SWAPED BATTERY BACK INTO ORIGINAL CONFIGURATION REF AMM 33-51-06, FWD LEFT BATTERY PACK NEEDS TO BE REPLACED. R/R FWD GALLEY OVERHEAD LEFT BATTERY PACK REF 33-51-06, OPS CHECK GOOD.

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