# SDR DALA2017012400658

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 23, 2017
- Submitted: January 26, 2017
- Operation: Air carrier
- Aircraft: [N697DL](https://openairdocs.org/aircraft/N697DL), registered now
- Make and model: Boeing 757232
- Aircraft serial: 30318
- Aircraft time: 59,426 hours, 22,376 cycles
- System (JASC): [2910 · Hydraulic System, Main](https://openairdocs.org/jasc/2910)
- Part: Monitor
- Condition: Failed
- Location: Hyd Pressure
- Stage of operation: CR
- How discovered: O
- Nature of condition: J
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/DALA2017012400658

## Discrepancy

DECLARED AN EMERGENCY DUE TO INDICATION OF LOSS OF RIGHT AND CENTER SYSTEM PRESSURE WITH NO QUANTITY LOSS.  TROUBLESHOT IAW FIM 29-35-00-815-802.  REPLACED THE HYDRAULIC QUANTITY MONITOR UNIT AND HYDRAULIC PRESSURIZATION MODULE. VERIFICATION FLIGHT PERFORMED WITH NO ISSUES NOTED.

---
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.