# SDR AALA202603279672

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 25, 2026
- Submitted: March 27, 2026
- Operation: Air carrier
- Aircraft: [N936AN](https://openairdocs.org/aircraft/N936AN), registered now
- Make and model: Boeing 737823
- Aircraft serial: 29532
- Aircraft time: 69,820 hours, 29,578 cycles
- System (JASC): [2120 · Air Distribution System](https://openairdocs.org/jasc/2120)
- Part: Air Filter
- Condition: Dirty
- Location: Zone 100
- Stage of operation: DE
- 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/AALA202603279672

## Discrepancy

AIRCRAFT WAS GROUNDED: AT FL270 FLIGHT ATTENDANT REPORTED A MODERATE DIRTY SOCK SMELL FROM THE CENTER TO AFT FUSELAGE.   ACCOMPLISHED JC 08L00021001 AND NO SMOKE OR ODOR WAS PRESENTED. SOF EVENT COULD NOT DUPLICATED AT THIS TIME. PERFORMED BOTH PACK DECONTAMINATION/ PNEUMATIC DUCT PURGING, PER AMM21-00-01. REMOVED AND REPLACED BOTH RECIRCULATION FAN FILTERS (AALA202603260375) AND (AALA202603279672), PER AMM21-25-01,  (OPEN).

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