# SDR AALA202407013555

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 29, 2024
- Submitted: July 1, 2024
- Operation: Air carrier
- Aircraft: [N929NN](https://openairdocs.org/aircraft/N929NN), registered now
- Make and model: Boeing 737823
- Aircraft serial: 33322
- Aircraft time: 32,375 hours, 13,923 cycles
- System (JASC): [2120 · Air Distribution System](https://openairdocs.org/jasc/2120)
- Part: Air Filter
- Part number: UNKNOWN
- Condition: Contaminated
- Location: Cabin Air
- 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/AALA202407013555

## Discrepancy

AIRCRAFT WAS GROUNDED: FLIGHT ATTENDANTS REPORT MUSTY OR DIRTY SOCK SMELL IN AFT CABINAND AFT GALLEY. FOUND HEPA FILTERS DIRTY AND CONTAMINATED. REMOVE AND REPLACED HEPA FILTERS. PER AMM 21-25-01. PERFOMRED PACK DECONTAMINATION PER AMM 21-00-01. NO FURTHER ODORS NOTED DURING APU BLEED AND ENGINE BLEED USE.

---
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.