# SDR AALA202111184526

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 17, 2021
- Submitted: November 18, 2021
- Operation: Air carrier
- Aircraft: [N125AA](https://openairdocs.org/aircraft/N125AA), registered now
- Make and model: Airbus A321-231
- Registry model: [Airbus A321-231](https://openairdocs.org/model/airbus-a321-231) (OpenAirDocs)
- Aircraft serial: 6272
- Aircraft time: 22,948 hours, 6,704 cycles
- System (JASC): [2120 · Air Distribution System](https://openairdocs.org/jasc/2120)
- Part: Filter
- Condition: Dirty
- Location: Cabin Air
- Stage of operation: CL
- How discovered: O
- Nature of condition: B
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AALA202111184526

## Discrepancy

AIRCRAFT WAS GROUNDED: ODOR SIMILAR TO DIRTY SOCKS NOTED IN AFT CABIN AFTER TAKE OFF. DISSIPATED AFTER FOLLOW QRH PROCEDURE TURNING PACK #2 OFF. FUMES RETURNED DESCENDING THROUGH 6000. SELECTING FLAPS 1, ODOR RETURNED AND COULD BE SMELLED IN CABIN AND COCKPIT. MAINTENANCE FOUND BOTH RECIRCULATION FILTERS DIRTY AND REPLACED THEM PER AMM 21-51-41.

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