# SDR HALA0600670

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 4, 2006
- Submitted: September 7, 2006
- Operation: Air carrier
- Aircraft: N591HA
- Make and model: Boeing 767-300
- Registry model: [Boeing 767-300](https://openairdocs.org/model/boeing-767-300) (OpenAirDocs)
- Aircraft serial: 33423
- Aircraft time: 13,957 hours, 2,639 cycles
- System (JASC): [2910 · Hydraulic System, Main](https://openairdocs.org/jasc/2910)
- Part: Hydraulic System
- Condition: Unknown
- Stage of operation: CL
- 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/HALA0600670

## Discrepancy

ETOPS SIGNIFICANT SYSTEM - DURING CLIMBOUT DURING THE LAST 10,000FT OF CLIMB L ENG PRIMARY HYD PRESS LIGHT CAME ON FOLLOWED BY THE L ELECT DEMAND PRESS LT.  CREW NOTED PRESS WOULD DROP TO APPX 1700 PSI, RTN TO NORMAL & PRESS LIGHT WENT OUT.  HYD QUANTITY 1.4 IN LFT SYS OCC 4X PRI TO LEVEL OFF.  ACCOMPLISHED L ENG RUN, FOUND NORMAL HYD PRESS WITH PRI HYD PUMP.  SUPSPECT EXCESS AIR IN SYS DUE TO BLEEDER VALVE ON DEFERRAL.  OK FOR SERVICE.

---
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.