# SDR AALA202012179009

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 15, 2020
- Submitted: December 18, 2020
- Operation: Air carrier
- Aircraft: [N102UW](https://openairdocs.org/aircraft/N102UW), registered now
- Make and model: Airbus A320-214
- Registry model: [Airbus A320-214](https://openairdocs.org/model/airbus-a320-214) (OpenAirDocs)
- Aircraft serial: 844
- Aircraft time: 59,316 hours, 31,337 cycles
- System (JASC): [2910 · Hydraulic System, Main](https://openairdocs.org/jasc/2910)
- Part: O-Ring
- Condition: Worn
- Location: Hyd System
- Stage of operation: DE
- How discovered: O
- Nature of condition: K, J
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AALA202012179009

## Discrepancy

AIRCRAFT WAS GROUNDED.  DURING DESCENT, ECAM FOR "HYD Y RSVR LO LEVEL" EMERGENCY DECLARED.  ACCOMPLISHED ECAM PROCEDURES, LANDED NORMALLY, AND TAXIED TO GATE.  FOUND BAD O-RING ON YELLOW SYSTEM HYDRAULIC POWER TRANSFER UNIT RETURN LINE QUICK DISCONNECT.  REPLACED O-RING WITH NEW, IAW AMM 29-13-15.  LEAK AND OPERATIONS CHECK GOOD.

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