# SDR SWIA202054408

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 30, 2020
- Submitted: November 30, 2020
- Operation: Air carrier
- Aircraft: [N286SY](https://openairdocs.org/aircraft/N286SY), registered now
- Make and model: Emb ERJ 170-200 LL
- Registry model: [EMB ERJ 170-200 LL](https://openairdocs.org/model/embraer-s-a-erj-170-200-ll) (OpenAirDocs)
- Aircraft serial: 17000752
- Aircraft time: 4,961 hours, 3,557 cycles
- System (JASC): [3320 · Passenger Compartment Lighting](https://openairdocs.org/jasc/3320)
- Part: Light
- Condition: Smoke
- Location: Cabin
- Stage of operation: AP
- How discovered: O
- Nature of condition: B
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/SWIA202054408

## Discrepancy

ON DESCENT FA'S REPORTED THAT THE CABIN LIGHT BECAME UNCONTROLLABLE.  WHEN THE CABIN LIGHT SWITCH WAS OFF, THE LIGHTS WOULD COME ON AND VICE-VERSA.  THEN THE CABIN BEGAN TO SMELL OF ELECTRICAL SMOKE, BUT NONE COULD BE SEEN.  SMELL CAME FROM OVERHEAD BIN 17A/B.  FLIGHT 3644-FILED CLOSED.  TROUBLESHOT UNCONTROLLABLE CABIN LIGHTS, PER ERJ FIM TASK.  FOUND BALLAST AT 16 A/B TO BE FAILING AND HAVE A BURNED SMELL.  REMOVED AND REPLACED DC BALLAST FOR CELING LIGHTS ABOVE SEAT 16A/B, PER ERJ AMM.  OPERATIONS CHECK GOOD.  A/C OK FOR SERVICE.  VERIFIED DC BALLAST AND FOUND CIRCUIT BOARD TO BE BURNED.

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