# SDR AALA202604274909

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 26, 2026
- Submitted: April 27, 2026
- Operation: Air carrier
- Aircraft: [N184US](https://openairdocs.org/aircraft/N184US), registered now
- Make and model: Airbus A321-211
- Registry model: [Airbus A321-211](https://openairdocs.org/model/airbus-a321-211) (OpenAirDocs)
- Aircraft serial: 1651
- Aircraft time: 77,351 hours, 30,214 cycles
- System (JASC): [2120 · Air Distribution System](https://openairdocs.org/jasc/2120)
- Part: Filter
- Condition: Dirty
- Location: Zone 100
- Stage of operation: AP
- 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/AALA202604274909

## Discrepancy

AIRCRAFT WAS GROUNDED: 2 MINUTES FROM LANDING THERE WAS A MUSTY SOCK SMELL ON THE FLIGHT DECK. FLIGHT ATTENDANTS SAID THEY DIDN'T SMELL IT BUT THERE WAS A VERY STRONG SMELL OF MARIJUANA IN THE CABIN THAT MASKED ANY OTHER ODORS. MAINTENANCE ACCOMPLISHED JOB CARD 26L00021001. NO ODOR WAS PRESENT WITH ENGINE BLEEDS OR APU BLEEDS RUNNING. WITH ENGINE BLEEDS OFF, APU BLEED OFF, AND CABIN FANS RUNNING, ODOR WAS PRESENT. MAINTENANCE INSPECTED AND FOUND CABIN RECIRCULATION FILTERS TO BE VERY DIRTY. REMOVED AND REPLACED CABIN RECIRCULATION FILTERS PER AMM 21-21-41. NO ODOR PRESENT WITH CABIN FANS RUNNING.

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