# SDR DALA2026062503772

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 24, 2026
- Submitted: June 25, 2026
- Operation: Air carrier
- Aircraft: [N301NB](https://openairdocs.org/aircraft/N301NB), registered now
- Make and model: Airbus A319-114
- Registry model: [Airbus A319-114](https://openairdocs.org/model/airbus-a319-114) (OpenAirDocs)
- Aircraft serial: 1058
- Aircraft time: 67,741 hours, 35,600 cycles
- System (JASC): [2910 · Hydraulic System, Main](https://openairdocs.org/jasc/2910)
- Part: O-Ring
- Condition: Leaking
- Location: Manifold
- Stage of operation: NR
- How discovered: V
- Nature of condition: K, J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/DALA2026062503772

## Discrepancy

EMERGENCY DECLARED, Y HYD RESERVOIR LEVEL CONTINUALLY DECREASES IN FLIGHT. HYD Y RSVR LO LVL ECAM DISPLAYED.  MSI / ODI EVENT. FOUND BAD O-RING ON YELLOW SYSTEM SIDE OF PTU MANIFOLD, FIN 3015GM. R/R O-RING PER A-319 AMM 20-20. LEAK CHECK OK. C/W A-319 AMM 29-00-00-280-006-A01 DUE TO POSSIBLE RT ENGINE PUMP CAVITATION. NO PROBLEMS NOTED. C/W GO GO ODI/MSI 29 21. C/W MCC CALL CAR. (LP: 8925798, AIRCRAFT WAS GROUNDED)

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