SDR 2003UALA00951

Service difficulty report · Line · Boeing 767322

Difficulty date: November 30, 2003
Submitted: March 11, 2004
Operation: Air carrier
Aircraft: N657UA
Make and model: Boeing 767322
Aircraft serial: 27112
Aircraft time: 47,519 hours, 7,727 cycles
Engine: Pwa PW4060
System (JASC): 2910 · Hydraulic System, Main
Part: Line
Condition: Failed
Location: Hyd System
Stage of operation: CR
How discovered: O
Nature of condition: K, J
Precautionary procedure: H

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

C-HYDRAULIC SYSTEM QTY SLOWLY DECREASING. LEFT MAIN GEAR HYDRAULIC LINE FOUND LEAKING AT UPPER TRUNNION LOCATION. RESERVICED CENTER SYSTEM TO NORMAL. RYNGLOK REPAIR ACCOMPLISHED ON BRAKE HYDRAULIC LINE/TUBE. SPECIFIC HYDRAULIC LINE AND CAUSE OF LEAK NOT IDENTIFIED. SERVICE BULLETIN 767-32-0162 IS RELATED TO HYDRAULIC LEAK EVENTS IN THIS AREA. DUE TO LACK OF PART IDENTIFICATION, UNABLE TO DETERMINE IF THIS EVENT RELATED TO SPECIFIC SERVICE BULLETIN APPLICATION.