# SDR UPS07651306

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 14, 2007
- Submitted: December 17, 2007
- Operation: Air carrier
- Aircraft: [N331UP](https://openairdocs.org/aircraft/N331UP), registered now
- Make and model: Boeing 767-34AF
- Registry model: [Boeing 767-34AF](https://openairdocs.org/model/boeing-767-34af) (OpenAirDocs)
- Aircraft serial: 27757
- System (JASC): [2910 · Hydraulic System, Main](https://openairdocs.org/jasc/2910)
- Part: O-Ring
- Condition: Failed
- Location: Nr 9 Spoiler
- Stage of operation: NR
- 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/UPS07651306

## Discrepancy

C HYD QTY EICAS MSG, TURNED INTO A C HYD FLUID TOTAL LOSS.  CREW TURNED CENTER PUMPS OFF TO SEE IF FLUID WOULD STILL BE LOST.  THE FLUID QTY CONTINUED TO GO DOWN.  THIS STARTED ABOUT 75 MILES FROM SDF.  FOUND NR 9 SPOILER FILTER PLUG O-RING BLOWN, SEE IPC 27-61-02 AS PER MM 27-91-02-4.  REMOVED PLUG AND REPLACED O-RING AND TIGHTENED, LEAK CHECKS  OK.  RAN ALL FH.  CONTROLS THROUGH SEVERAL TIMES.

---
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.