# SDR CALA2013120693515

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 6, 2013
- Submitted: December 6, 2013
- Operation: Air carrier
- Aircraft: [N428UA](https://openairdocs.org/aircraft/N428UA), registered now
- Make and model: Airbus A320-232
- Registry model: [Airbus A320-232](https://openairdocs.org/model/airbus-a320-232) (OpenAirDocs)
- Aircraft serial: 523
- Aircraft time: 63,538 hours, 23,894 cycles
- Engine: Iae V2527A5
- System (JASC): [2611 · Smoke Detection](https://openairdocs.org/jasc/2611)
- Part: Smoke Detector
- Condition: Faulty
- Location: Lavatory
- Stage of operation: IN
- How discovered: O
- Nature of condition: J
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CALA2013120693515

## Discrepancy

IAW LOG 2 CIDS CAUTION LIGHT ON.  FOUND SYS STATUS SHOWING LAVATORY SMOKE SYS FAIL WITH NO SDCU 1 & 2 DATA.  REPLACED SDCU, NO HELP.  REINSTALLED ORIGINAL UNIT.  TROUBLESHOOTING DATA FAULTING FWD LAVATORY DETECTOR IAW MT 26-002.

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