# SDR CALA2023021000380

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 10, 2023
- Submitted: February 10, 2023
- Operation: Air carrier
- Aircraft: [N18119](https://openairdocs.org/aircraft/N18119), registered now
- Make and model: Boeing 757-200 SERIES
- Registry model: [Boeing 757-200 SERIES](https://openairdocs.org/model/boeing-757-200-series) (OpenAirDocs)
- Aircraft serial: 27561
- Aircraft time: 88,357 hours, 21,150 cycles
- System (JASC): [5100 · Standard Practices/Structures](https://openairdocs.org/jasc/5100)
- Part: Sign
- Part number: UNKNOWN
- Condition: Smoke
- Location: Lavatory
- Stage of operation: UK
- How discovered: O
- Nature of condition: B
- Precautionary procedure: B
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CALA2023021000380

## Discrepancy

LAVATORY SMOKE EICAS AND ALARM.   FOUND PRINTED CIRCUIT BOARD ON NS/FSB SIGN LOOSE MAKING CONTACT WITH LAV S COMPOSITE WALL WHICH OVERHEATED AND CREATED SMOKE IN THE LAV. REPLACED NS/FSB SIGN REF AMM 33-24-00-962-081. OP'S CHECK GOOD REF AMM 33-24-00-710-801.

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