# SDR AALA202405073147

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 6, 2024
- Submitted: May 7, 2024
- Operation: Air carrier
- Aircraft: [N431AN](https://openairdocs.org/aircraft/N431AN), registered now
- Make and model: Airbus A321-253NX
- Registry model: [Airbus A321-253NX](https://openairdocs.org/model/airbus-a321-253nx) (OpenAirDocs)
- Aircraft serial: 10385
- Aircraft time: 11,702 hours, 3,112 cycles
- System (JASC): [2611 · Smoke Detection](https://openairdocs.org/jasc/2611)
- Part: Smoke Detector
- Part number: UNKNOWN
- Condition: False Activation
- Location: Lavatory
- Stage of operation: CR
- How discovered: O
- Nature of condition: N
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AALA202405073147

## Discrepancy

AIRCRAFT WAS NOT GROUNDED: FLIGHT CREW REPORTED THAT 2 HOURS FROM LANDING, INTERMITTENT LAVATORY FIRE ALARM MASTER WARNING. FLIGHT ATTENDANTS REPORTED NO CREDIBLE SIGNS OF SMOKE. MAINTENANCE ACCOMPLISHED TSM 26-17-00-810-804-A, NO SIGNS OF SMOKE PRESENT NO FAULTS PRESENT IN SMOKE WARNING REPORTS OR CLASS 3 FAULTS.

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