# SDR 2005UALA00412

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 4, 2005
- Submitted: May 10, 2005
- Operation: Air carrier
- Aircraft: [N446UA](https://openairdocs.org/aircraft/N446UA), registered now
- Make and model: Airbus A320-232
- Registry model: [Airbus A320-232](https://openairdocs.org/model/airbus-a320-232) (OpenAirDocs)
- Aircraft serial: 834
- Aircraft time: 24,274 hours, 8,889 cycles
- Engine: Iae V2527A5
- System (JASC): [2910 · Hydraulic System, Main](https://openairdocs.org/jasc/2910)
- Part: O-Ring
- Condition: Failed
- Location: Yellow Hyd Sys
- Stage of operation: NR
- How discovered: O
- Nature of condition: K, J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/2005UALA00412

## Discrepancy

YELLOW RESERVOIR LOW LEVEL FAILURE WITH BLUE SYS LOW AND GREEN FLUCTUATING AS WELL.  FLIGHT LANDED WITHOUT INCIDENT.  REPLACED B-NUT AND O-RING ON PTU MANIFOLD REF MM 29-13-15-991-001 PTU MANIFOLD ITEM 5 AND 52 LEAK CHECK OK. FOUND BAD O-RING SOURCE OF LEAK. SERVICED YELLOW SYSTEM.

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