# SDR AALA202601042359

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 2, 2026
- Submitted: January 4, 2026
- Operation: Air carrier
- Aircraft: [N178US](https://openairdocs.org/aircraft/N178US), registered now
- Make and model: Airbus A321-211
- Registry model: [Airbus A321-211](https://openairdocs.org/model/airbus-a321-211) (OpenAirDocs)
- Aircraft serial: 1519
- Aircraft time: 77,952 hours, 30,319 cycles
- System (JASC): [2611 · Smoke Detection](https://openairdocs.org/jasc/2611)
- Part: Smoke Detector
- Condition: False Activation
- Location: Zone 900
- 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/AALA202601042359

## Discrepancy

AIRCRAFT WAS NOT GROUNDED: FLIGHT CREW REPORTED THAT THE FORWARD LAVATORY SMOKE DETECTION CHIME ALERTED SMOKE WHILE PASSENGER WAS ALLEGEDLY VAPING. THE MID AND AFT RIGHT SMOKE DETECTION CHIME WENT OFF SIMULTANEOUSLY WITH FORWARD LAVATORY BUT NO PASSENGERS WERE USING THEM. THE FLIGHT DECK NEVER GOT ANY SMOKE ALERTS. MAINTENANCE ACCOMPLISHED A POWERUP TEST RESET OF THE LAVAORY SMOKE DETECTION SYSTEM PER AMM 26-17-00-710-001-A .

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