# SDR AALA201512299008

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 28, 2015
- Submitted: December 29, 2015
- Operation: Air carrier
- Aircraft: [N519UW](https://openairdocs.org/aircraft/N519UW), registered now
- Make and model: Airbus A321-231
- Registry model: [Airbus A321-231](https://openairdocs.org/model/airbus-a321-231) (OpenAirDocs)
- Aircraft serial: 3881
- Aircraft time: 24,597 hours, 8,311 cycles
- System (JASC): [2910 · Hydraulic System, Main](https://openairdocs.org/jasc/2910)
- Part: O-Ring
- Condition: Leaking
- Location: Hydraulic Sys
- Stage of operation: TO
- How discovered: O
- Nature of condition: K, J
- Precautionary procedure: C
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AALA201512299008

## Discrepancy

REJECTED TAKEOFF, AIRCRAFT WAS GNDED.  AT 75 KTS, AN ECAM MSG FOR A YELLOW HYD FAILURE, LOW RESERVOIR LEVEL, OCCURRED & THE FLIGHT CREW ABORTED THE TAKEOFF & RETURNED TO GATE.  REPLACED THE NR 2 ENG HYD PUMP PRESS SWITCH O RING.  ACCOMPLISHED A SATISFACTORY OPERATIONAL & LEAK CHECK IAW AMM 29-13-17 & 12-12-12.

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