# SDR CALA2026031114511

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 11, 2026
- Submitted: March 11, 2026
- Operation: Air carrier
- Aircraft: [N17433](https://openairdocs.org/aircraft/N17433), registered now
- Make and model: Boeing 737-9
- Registry model: [Boeing 737-9](https://openairdocs.org/model/boeing-737-9) (OpenAirDocs)
- Aircraft serial: 67747
- Aircraft time: 230 hours, 79 cycles
- System (JASC): [3397 · Light System Wiring](https://openairdocs.org/jasc/3397)
- Part: Connector
- 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/CALA2026031114511

## Discrepancy

EMERGENCY AISLE LIGHT ABOVE ROW 27 INOPERATIVE.  REMOVED ROW 27 AISLE CEILING LIGHT ASSY, SWAPPED IN KNOWN GOOD EMERGENCY LIGHT ASSY IAW AMM 33-51-03-960-802, NO FIX. NO VOLTAGE FOUND AT CONNECTOR D14714 IAW WDM 33-51-13-4.   SWAPPED IN A NEW POWER SUPPLY M1670, NO HELP. REINSTALLED ORIGINAL POWER SUPPLY IAW AMM 33-51-06-960-803. CHECKED CONNECTOR D14710, PIN B HAS GOOD GROUND,  NO CONTINUITY FOUND ON PIN A BETWEEN CONNECTOR D10716 & D14710,   WIRING CHECKS COMPLETED BTWN CONNECTOR D12004 (POWER SUPPLY M1671) TO AISLE LIGHT CONNECTOR D14714. IAW  WDM 33-51-13-4 DEPINNED PIN 16 IN CONNECTOR D12004 & PIN A OF CONNECTOR D14714. FOUND WIRE W4148-0216-20 WITH A BREAK  10 INCHES FROM CONNECTOR D14714. REPINNED PIN 16 CONNECTOR D12004 AND RECONNECTED CONNECTOR TO POWER SUPPLY M1671 IAW SWPM 20-63-02 AND AMM 33-51-06-960-803.  ACCOMPLISHED EMERGENCY LIGHTS OPS TEST, IAW AMM TASK 33-51-00-720-801. TEST PASSED. OPS CHECKED GOOD.

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