# SDR CALA2025123012530

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 28, 2025
- Submitted: December 30, 2025
- Operation: Air carrier
- Aircraft: [N39475](https://openairdocs.org/aircraft/N39475), registered now
- Make and model: Boeing 737924ER
- Aircraft serial: 37100
- Aircraft time: 38,842 hours, 14,111 cycles
- System (JASC): [3397 · Light System Wiring](https://openairdocs.org/jasc/3397)
- Part: Wire Harness
- Part number: BR9672A60
- Condition: Damaged
- 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/CALA2025123012530

## Discrepancy

EMERGENCY LIGHT HARNESS AT BS 875 NOT IN PROPERLY CONFIGURATION IAW DWG 40N01810, AND HAS DAMAGE IN SEVERAL AREAS.  SUPPORT TASK NSA EMX N/R 00077.   REMOVED INCORRECT WIRING FROM EEPL BR9672-A-60 AND REPLACED WITH WIRING HARNESS SECTIONS P/N BR9635-60-24 AND BR9635-90-24 IAW AIPC 25-27-31 & SWPM 20-90-14. HARNESS NOW MEETS CONFIGURATION REQUIREMENTS OF DWG 40N01810,  SHEET 2, REV ORIGINAL.  ALL DAMAGE WAS REMOVED WITH REPLACEMENT OF THE HARNESS SECTIONS. PERFORMED EMERGENCY LIGHTS OPS CHK IAW AMM 33-51-00-720-801. ALL FUNCTIONS GOOD.

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