# SDR AALA202204269548

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 23, 2022
- Submitted: April 26, 2022
- Operation: Air carrier
- Aircraft: [N126AN](https://openairdocs.org/aircraft/N126AN), registered now
- Make and model: Airbus A300*
- Aircraft serial: 6313
- Aircraft time: 24,111 hours, 7,264 cycles
- System (JASC): [2120 · Air Distribution System](https://openairdocs.org/jasc/2120)
- Part: Filter
- Part number: 20499006
- Part serial: 12005
- Condition: Contaminated
- Location: Zone 100 - Fuse
- Stage of operation: DE
- How discovered: O
- Nature of condition: B
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AALA202204269548

## Discrepancy

AIRCRAFT WAS GROUNDED: DIRTY SOCKS SMELL ON FLIGHT DECK ON DESCENT PASSING THROUGH 5,000; APU WAS " OFF" NOT SMELLED IN AFT CABIN, SO SUSPECT LEFT ENGINE OR PACK ISSUE LASTED 1-2 MINUTES AND NO CREW ACTION WAS WARRANTED, NOR TAKEN, AS ODOR WAS FLEETING. MAINTENANCE FOUND LEFT OZONE FILTER CONTAMINATED AND REPLACED IT PER AMM 21-51-41. A SATISFACTORY OPERATIONAL / LEAK CHECK WAS ACCOMPLISHED WITH NO ODORS NOTED.

---
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.