# SDR DALA2022041802661

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 15, 2022
- Submitted: April 18, 2022
- Operation: Air carrier
- Aircraft: [N820DX](https://openairdocs.org/aircraft/N820DX), registered now
- Make and model: Boeing 757-26D
- Registry model: [Boeing 757-26D](https://openairdocs.org/model/boeing-757-26d) (OpenAirDocs)
- Aircraft serial: 33960
- Aircraft time: 48,209 hours, 23,963 cycles
- System (JASC): [2120 · Air Distribution System](https://openairdocs.org/jasc/2120)
- Part: None
- Condition: None
- Stage of operation: IN
- How discovered: O
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/DALA2022041802661

## Discrepancy

SHIP 6820 COCKPIT AIR CONDITIONING HAS FOUL ODOR (DIRTY SOCK SMELL). PERSISTED ENTIRE FLIGHT. WORSE ON DESENT. ONCE ON APU BLEED SMELL NOT AS BAD. CORRECTIVE ACTION: TROUBLESHOT PER B757 FIM 21-00-01-301. RAN BOTH ENGINES AND FOUND LH ENGINE PROVIDED SOCK SMELL IN COCKPIT. PER B757 FIM 71-05-00. REF LOG PAGES 8754638 AND 8754640. CHANGED LT AND RT RECIRC FILTERS. (8754638

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