# SDR AALA202403199793

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 7, 2024
- Submitted: March 19, 2024
- Operation: Air carrier
- Aircraft: [N567UW](https://openairdocs.org/aircraft/N567UW), registered now
- Make and model: Airbus A321-231
- Registry model: [Airbus A321-231](https://openairdocs.org/model/airbus-a321-231) (OpenAirDocs)
- Aircraft serial: 5728
- Aircraft time: 32,555 hours, 13,272 cycles
- System (JASC): [4900 · Airborne Auxiliary Power Unit (APU) System](https://openairdocs.org/jasc/4900)
- Part: Apu
- Part number: 38007081
- Part serial: P5945
- Condition: Odor
- Location: Zone 100
- Part time: 30,557 hours, 12,313 cycles
- Stage of operation: TX
- 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/AALA202403199793

## Discrepancy

AIRCRAFT WAS GROUNDED: ACRID SMELL ON TAXI OUT IN CLT AND APPROACH AND TAXI INTO DFW. SMELL WENT AWAY IN FLIGHT. **SUPPLEMENATAL REPORT FOR AALA202403119793: REPLACED RECIRCULATION FILTER 4012HM (AALA202403191767), RECIRCULATION FILTER 4013HM (AALA202403197881), AND APU (AALA202403119793). ** (CLOSED)

---
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.