# SDR AALA202212123946

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 10, 2022
- Submitted: December 12, 2022
- Operation: Air carrier
- Aircraft: [N536UW](https://openairdocs.org/aircraft/N536UW), registered now
- Make and model: Airbus A321-231
- Registry model: [Airbus A321-231](https://openairdocs.org/model/airbus-a321-231) (OpenAirDocs)
- Aircraft serial: 4025
- Aircraft time: 39,861 hours, 15,852 cycles
- System (JASC): [4920 · APU Core Engine](https://openairdocs.org/jasc/4920)
- Part: Apu
- Part number: 38007081
- Part serial: P5382
- Condition: Odor
- Location: Zone 100
- Stage of operation: CL
- How discovered: O
- Nature of condition: B
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AALA202212123946

## Discrepancy

AIRCRAFT WAS GROUNDED: AFTER TAKE OFF, DURING CLIMB  A DIRTY / MUSTY ODOR IN THE FRONT AND REAR OF THE AIRCRAFT WAS REPORTED. THE AIRCRAFT RETURNED TO CLT WHERE IT LANDED SAFELY WITHOUT FURTHER INCIDENT. NOTE: NO EMERGENCY WAS DECLARED.  MAINTENANCE ISOLATED THE SOURCE OF THE ODOR TO THE APU.   (OPEN)

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