# SDR CALA2026071617793

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 14, 2026
- Submitted: July 16, 2026
- Operation: Air carrier
- Aircraft: [N37521](https://openairdocs.org/aircraft/N37521), registered now
- Make and model: Boeing 737-9
- Registry model: [Boeing 737-9](https://openairdocs.org/model/boeing-737-9) (OpenAirDocs)
- Aircraft serial: 64497
- Aircraft time: 18,129 hours, 6,039 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/CALA2026071617793

## Discrepancy

REMOVED AND REPLACED BATTERY PACKS M1672, M03378 AND M1670. FOR SCEPTRE TRACKING ONLY.   REMOVED AND REPLACED BATTERY PACKS M1672, M03378 AND M1670. IAW AMM 33-51-06-960-802. EMERGENCY LIGHTS TEST GOOD FOR SERVICE.  REMOVED AND REPLACED BATTERY PACKS M1672, M03378 AND M1670. IAW AMM 33-51-06-960-802. EMERGENCY LIGHTS TEST GOOD FOR SERVICE.

---
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.