# SDR CALA2026072417964

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 21, 2026
- Submitted: July 24, 2026
- Operation: Air carrier
- Aircraft: [N18223](https://openairdocs.org/aircraft/N18223), registered now
- Make and model: Boeing 737824
- Aircraft serial: 28932
- Aircraft time: 82,681 hours, 31,031 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Battery Pack
- Part number: D71701100SMI
- 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/CALA2026072417964

## Discrepancy

EMERGENCY LIGHT BATTERY PACK M1672 FAILED CAPACITY CHECK.  REPLACED EMERGENCY BATTERY AT LOCATION #M1672, LIGHTS RELATED TO THIS PACK DID NOT COME ON, SUSPECT BAD POWER SUPPLY. POWER SUPPLY IS ON AOG. REFERRED TO MM# 33-51-06-960-805.   PERFORMED AMM 33-51-06-610-802 AND ALL EMERGENCY LIGHTS FUNCTION PROPERLY AT THIS TIME. OK 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.