# SDR AALA202503147980

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 13, 2025
- Submitted: March 14, 2025
- Operation: Air carrier
- Aircraft: [N928NN](https://openairdocs.org/aircraft/N928NN), registered now
- Make and model: Boeing 737823
- Aircraft serial: 31172
- Aircraft time: 34,260 hours, 14,837 cycles
- System (JASC): [2120 · Air Distribution System](https://openairdocs.org/jasc/2120)
- Part: Air Filter
- Condition: Odor
- Location: Zone 100
- Stage of operation: NR
- 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/AALA202503147980

## Discrepancy

AIRCRAFT WAS GROUNDED: MILDEW SMELL THROUGHOUT THE AIRCRAFT. REPLACED BOTH RECIRCULATION FILTERS (AALA202503140187) (AALA202503147980) . PER AMM 21-25-01.

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