# SDR DALA2021030301205

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 27, 2021
- Submitted: March 3, 2021
- Operation: Air carrier
- Aircraft: [N817NW](https://openairdocs.org/aircraft/N817NW), registered now
- Make and model: Airbus A330-323
- Registry model: [Airbus A330-323](https://openairdocs.org/model/airbus-a330-323) (OpenAirDocs)
- Aircraft serial: 0843
- Aircraft time: 59,520 hours, 7,861 cycles
- System (JASC): [2931 · Hydraulic Pressure Indicator](https://openairdocs.org/jasc/2931)
- Part: Pressure Switch
- Condition: Faulted
- Location: Hyd System
- Stage of operation: NR
- How discovered: O
- Nature of condition: J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/DALA2021030301205

## Discrepancy

SHIP 3317 -DE- CREW DECLARED EMERGENCY DUE TO YELLOW HYDRAULIC SYSTEM LOW PRESSURE. CORRECTIVE ACTION: REPLACED YELLOW SYSTEM PRESSURE SWITCH, YELLOW EDP PRESSURE SWITCH AND HSMU.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.