# SDR CALA2025012702042

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 26, 2025
- Submitted: January 27, 2025
- Operation: Air carrier
- Aircraft: [N37551](https://openairdocs.org/aircraft/N37551), registered now
- Make and model: Boeing 737-9
- Registry model: [Boeing 737-9](https://openairdocs.org/model/boeing-737-9) (OpenAirDocs)
- Aircraft serial: 67181
- Aircraft time: 6,921 hours, 2,329 cycles
- System (JASC): [3397 · Light System Wiring](https://openairdocs.org/jasc/3397)
- Part: Wire Harness
- Part number: W3144
- Condition: Burned
- Location: Zone 900
- Stage of operation: IN
- How discovered: O
- Nature of condition: B
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CALA2025012702042

## Discrepancy

WHILE T/S LAV RT LIGHT PROBLEN FOUND BUNDLE W3144 NEAR CONNECTOR D15864 BURNED. SEVERAL WIRES BROKE.  TOTAL 11 WIRES DAMAGED ON CONNECTOR D15864. 3 BROKEN, 8 CHARRED AND CHAFFED DAMAGED WIRES CIRCUIT BREAKERS PULLED TO DEACTIVATE ALL LAVS REF AMM 25-40-00-040-802. REF SWPM 20-30-13, REPAIRED DAMAGED WIRES W3144-0730-18, W3144-0850-20, W3144-0851-20, W3144-0856-22, W3144-0857, W3144-0867-20, W3144-0868-20, AND W3144-2703R&B-22 BY SEALED SPLICE IAW SWPM 20-30-12. WIRE W3144-0874-18 FOUND MINOR DAMAGE TO INSULATION REPAIRED WITH TAPE&TIES, REMAINING WIRES IN BUNDLE CLEANED REF SWPM 20-10-04 AND INSPECTED WITH NO DAMAGE NOTED. RESECURED BUNDLE AND APPLIED CHAFF PROTECTION REF SWPM 20-10-26.

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