# SDR CALA2025111411220

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 12, 2025
- Submitted: November 14, 2025
- Operation: Air carrier
- Aircraft: [N37409](https://openairdocs.org/aircraft/N37409), registered now
- Make and model: Boeing 737924
- Aircraft serial: 30126
- Aircraft time: 64,515 hours, 26,957 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Battery Pack
- Part number: D71701100
- Condition: Discharged
- 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/CALA2025111411220

## Discrepancy

EMERGENCY LIGHTS OVER SEAT ROWS 32 AND 36 DEF INOP. SUPPORT TASK NSA EMX NR 00051. REMOVED UNSERVICEABLE BATTERY PACK PN AD-D717-01-100 SN 179187 A T BATTERY SUPPLY M1899 AND INSTALLED SERVICEABLE BATTERY PACK PN AD-D717-01-100 SN 371771 IAW B737-900 AMM 33-51-06. OPS CHECK GOOD.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.