# SDR USAA2015032800001

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 27, 2015
- Submitted: March 30, 2015
- Operation: Air carrier
- Aircraft: [N554UW](https://openairdocs.org/aircraft/N554UW), registered now
- Make and model: Airbus A321-231
- Registry model: [Airbus A321-231](https://openairdocs.org/model/airbus-a321-231) (OpenAirDocs)
- Aircraft serial: 4966
- Aircraft time: 10,607 hours, 4,420 cycles
- System (JASC): [2910 · Hydraulic System, Main](https://openairdocs.org/jasc/2910)
- Part: O-Ring
- Part number: NAS1611009
- Condition: Blew Out
- Location: Hydraulic Sys
- Stage of operation: CR
- How discovered: O
- Nature of condition: J
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/USAA2015032800001

## Discrepancy

WHILE EN ROUTE, THE CREW REPORTED LOSS OF THE GREEN HYD SYS.  FLIGHT CONTINUED & AN EMER DECLARED PRIOR TO LANDING.  LANDING OCCURRED WITHOUT INCIDENT.  THE NR 1 ENG GREEN HYD PRESS TRANSDUCER O RING WAS BLOWN OUT.  REPLACED O RING IAW AMM 29-32-11-400-001-A.  SERVICED HYD SYS TO FULL.  OPERATIONAL & LEAK CHECKS WERE GOOD.

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