# SDR USAA2015033100011

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 30, 2015
- Submitted: March 31, 2015
- Operation: Air carrier
- Aircraft: [N508AY](https://openairdocs.org/aircraft/N508AY), registered now
- Make and model: Airbus A321-231
- Registry model: [Airbus A321-231](https://openairdocs.org/model/airbus-a321-231) (OpenAirDocs)
- Aircraft serial: 3740
- Aircraft time: 23,509 hours, 7,880 cycles
- System (JASC): [2120 · Air Distribution System](https://openairdocs.org/jasc/2120)
- Part: Unknown
- Condition: Odor
- Location: Cockpit
- Stage of operation: UK
- 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/USAA2015033100011

## Discrepancy

CAPTAIN REPORTED A SMELL WHEN THEY STARTED THE APU.  FLIGHT ATTENDANT SAID IT WAS THE DIRTY SOCK SMELL. THE CAPTAIN SAID IT WAS MORE OF A CHEMICAL SMELL.  CABIN CREW REPORTED HEADACHE SYMPTOMS.  ACCOMPLISHED THE CABIN AIR QUALITY TROUBLESHOOTING TASK CARD 26L0021001, NO ODOR OR SMELL WAS OBSERVED IN THE CABIN & NO HISTORY OF SIMILAR EVENTS IN THE PREVIOUS 90 DAYS.

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