# SDR USAA2013011000021

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 9, 2013
- Submitted: January 10, 2013
- Operation: Air carrier
- Aircraft: [N167US](https://openairdocs.org/aircraft/N167US), registered now
- Make and model: Airbus A321-211
- Registry model: [Airbus A321-211](https://openairdocs.org/model/airbus-a321-211) (OpenAirDocs)
- Aircraft serial: 1442
- Aircraft time: 40,811 hours, 14,733 cycles
- System (JASC): [2910 · Hydraulic System, Main](https://openairdocs.org/jasc/2910)
- Part: B-Nut
- Condition: Loose
- Location: Hydraulic Sys
- Stage of operation: CR
- How discovered: O
- Nature of condition: K, B
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/USAA2013011000021

## Discrepancy

INTERMITTENT ROTTEN EGG SMELL REPORTED IN AFT CABIN, OCCURRING ON GROUND, CLIMB, CRUISE AND DESCENT.  FLIGHT ATTENDANTS REPORTED NAUSEA AND VOMITING.  MAINTENANCE FOUND EVIDENCE OF A SLIGHT HYDRAULIC LEAK AT THE GREEN SYSTEM 3-LINE CLUSTER (FRAME 35) - TIGHTENED B-NUTS.  ALSO REPLACED AVIONIC VENT FILTER, OZONE FILTERS AND HEPA FILTERS AS A PRECAUTION.

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