# SDR AALA202605154130

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 13, 2026
- Submitted: May 16, 2026
- Operation: Air carrier
- Aircraft: [N903NN](https://openairdocs.org/aircraft/N903NN), registered now
- Make and model: Boeing 737823
- Aircraft serial: 31153
- Aircraft time: 39,704 hours, 17,107 cycles
- System (JASC): [3840 · Air Supply (Water Pressure System)](https://openairdocs.org/jasc/3840)
- Part: Switch
- Condition: Faulty
- Location: Zone 200
- Stage of operation: NR
- How discovered: V
- Nature of condition: B
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AALA202605154130

## Discrepancy

AIRCRAFT WAS GROUNDED: FLIGHT ATTENDANTS IN AFT GALLEY REPORT ELECTRICAL SMOKE SMELL. FOUND POTABLE WATER AIR COMPRESSOR TO BE CONSTANTLY RUNNING AND TO BE SOURCE OF ODOR. REMOVED AND REPLACED WATER PRESSURE CUTOUT SWITCH (AALA202605144130), PER AMM 38-42-07. ALSO, REMOVE AND REPLACED RELAY R00184 (AALA202605148279), PER SWPM 20-81-11. ACCOMPLISHED OPS CHECK OF POTABLE WATER AIR COMPRESSOR, PER AMM 38-42-01, OPS CHECK GOOD AND NO LONGER EMITTING ODOR.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.