# SDR AALA202403193644

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 16, 2024
- Submitted: March 19, 2024
- Operation: Air carrier
- Aircraft: [N146AA](https://openairdocs.org/aircraft/N146AA), registered now
- Make and model: Airbus A321-231
- Registry model: [Airbus A321-231](https://openairdocs.org/model/airbus-a321-231) (OpenAirDocs)
- Aircraft serial: 6761
- Aircraft time: 25,320 hours, 9,907 cycles
- System (JASC): [4900 · Airborne Auxiliary Power Unit (APU) System](https://openairdocs.org/jasc/4900)
- Part: Thermostat
- Part number: 342B050000
- Part serial: 12644
- Condition: Unknown
- Location: Zone 400 - Nac/P
- Part time: 31,074 hours, 15,547 cycles
- Stage of operation: DE
- How discovered: O
- Nature of condition: B
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AALA202403193644

## Discrepancy

AIRCRAFT WAS GROUNDED: FLIGHT ATTENDANT REPORTED ODOR IN AFT CABIN ON DESCENT INTO CUN. REPLACED APU (AALA202403196261) AND ENGINE TEMPERATURE CONTROL THERMOSTAT (AALA202403193644).

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