# SDR AALA202203211967

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 18, 2022
- Submitted: March 21, 2022
- Operation: Air carrier
- Aircraft: [N876NN](https://openairdocs.org/aircraft/N876NN), registered now
- Make and model: Boeing 737*
- Aircraft serial: 40767
- Aircraft time: 31,261 hours, 13,093 cycles
- System (JASC): [2611 · Smoke Detection](https://openairdocs.org/jasc/2611)
- Part: Smoke Detector
- Condition: False Activation
- Location: Zone 900 - Lav/G
- Stage of operation: CR
- How discovered: V
- Nature of condition: N
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AALA202203211967

## Discrepancy

AIRCRAFT WAS NOT GROUNDED: LAVATORY SMOKE LIGHT ILLUMINATED AT CRUISE WITH MASTER CAUTION LIGHT. EXTINGUISHED AFTER 5-10 SECONDS. FLIGHT ATTENDANTS REPORT NO FINDINGS AND COULD NOT SPECIFY WHICH LAVATORY. PERFORMED SATISFACTORY TEST OF LAVATORY SMOKE SYSTEM.

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