# SDR UALA2011051802444

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 18, 2011
- Submitted: May 19, 2011
- Operation: Air carrier
- Aircraft: [N668UA](https://openairdocs.org/aircraft/N668UA), registered now
- Make and model: Boeing 767322
- Aircraft serial: 30024
- Aircraft time: 43,448 hours, 11,637 cycles
- Engine: Pwa PW4056
- System (JASC): [2910 · Hydraulic System, Main](https://openairdocs.org/jasc/2910)
- Part: Valve
- Part number: 340545
- Part serial: 702
- Condition: Faulty
- Location: Hyd System
- Stage of operation: IN
- How discovered: 9
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/UALA2011051802444

## Discrepancy

HMG CONTINUES TO RUN WITH SWITCH RELEASED.  HYD GEN VALVE MESSAGE ON STATUS AND MAINT PG BY- 121047 :PER FIM 24-25-00-FIG 103 BLOCK 10 28VDC PRESENT ON PIN 3.  PLEASE REPLACE VALVE V147.  REMOVED AND REPLACED HYD MOTOR GEN SHUTOFF VALVE PER MM.  OPS CHECKED AND FOUND LEAKING FROM MAIN BODY. PART WAS REPLACED.  REPLACED HYD MOTOR GEN VALVE V147. OPS CHECKED GOOD.  NO LEAKS NO FAULTS.  REPLACED HYDRAULIC MOTOR GEN VALVE V147 REF MM.  OPS CHECKED GOOD.  NO LEAKS NO FAULTS.

---
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.