# SDR DALA2025072005440

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 19, 2025
- Submitted: July 20, 2025
- Operation: Air carrier
- Aircraft: [N575DN](https://openairdocs.org/aircraft/N575DN), registered now
- Make and model: Airbus A321-271NX
- Registry model: [Airbus A321-271NX](https://openairdocs.org/model/airbus-s-a-s-a321-271nx) (OpenAirDocs)
- Aircraft serial: 11717
- Aircraft time: 2,269 hours, 606 cycles
- System (JASC): [2120 · Air Distribution System](https://openairdocs.org/jasc/2120)
- Part: Ecs
- Condition: Contaminated
- Stage of operation: TX
- 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/DALA2025072005440

## Discrepancy

AIRCRAFT 5075, AT GATE AFTER ENGINE SHUTDOWN STRONG FUME SCENT IMMEDIATELY AFTER TURNING ON APU BLEED.  SHUT OFF BLEED WITHIN 5 SECONDS OF NOTICING THE SMELL.   COMPLETED LEVEL A DECONTAMINATION OF THE ENVIRONMENTAL CONTROL SYSTEM (ECS) PER WORKCARD 2100-2007. (LP 7458663)

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