SDR AALA20090723MIA01

Service difficulty report · Shutoff Valve · Boeing 767323

Difficulty date: July 23, 2009
Submitted: July 28, 2009
Operation: Air carrier
Aircraft: N381AN
Make and model: Boeing 767323
Aircraft serial: 25450
Aircraft time: 68,526 hours, 10,818 cycles
System (JASC): 2910 · Hydraulic System, Main
Part: Shutoff Valve
Condition: Leaking
Location: Rt Mlg Ww
Stage of operation: CR
How discovered: O
Nature of condition: K
Precautionary procedure: O

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

What was found

MIA - CENTRAL HYDRAULIC QUANTITY EICAS MESSAGE DURING CRUISE WITH STATUS MESSAGE "RF" ON CENTER HYDRAULIC QUANTITY. COMPLETED QRH PROCEDURE OF DEPRESSURINZING CENTER HYDRAULIC SYSTEM AT CRUISE. ALTERNATE GEAR EXTENSION PROCEDURAL STEP: GEAR HANDLE DOWN CAUSED LOSS OF CENTER HYDRAULIC SYSTEM. COMPLIED QRH PROCEDURE LANDED FLAPS 10 DEGREES. FOUND HYDRAULIC LEAK AROUND FLAP SLAT HYDRAULIC SHUTOFF VALVE IN RIGHT WHEEL WELL AFT WALL. REPLACED FLAP/SLAT MODULE. SYSTEM GROUND CHECKED NORMAL OPERATION.