# SDR AALA201509309003

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 28, 2015
- Submitted: September 30, 2015
- Operation: Air carrier
- Aircraft: [N172US](https://openairdocs.org/aircraft/N172US), registered now
- Make and model: Airbus A321-211
- Registry model: [Airbus A321-211](https://openairdocs.org/model/airbus-a321-211) (OpenAirDocs)
- Aircraft serial: 1472
- Aircraft time: 49,734 hours, 18,430 cycles
- System (JASC): [2120 · Air Distribution System](https://openairdocs.org/jasc/2120)
- Part: Unknown
- Condition: Smoke
- Location: Cabin
- Stage of operation: NR
- How discovered: O
- Nature of condition: B, J
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AALA201509309003

## Discrepancy

FLIGHT 735 RECEIVED LAVATORY SMOKE INDICATION ON ECAM AT GATE.  FLIGHT ATTENDANTS REPORTED SMOKE COMING FROM MIDDLE LAVATORY.  PERFORMED SATISFACTORY BITE TEST OF LAVATORY SMOKE DETECTION SYS & INSPECTED LAVATORIES.  OPERATIONAL CHECKED OK.

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