SDR UIEA200500078

Service difficulty report · Servo Valve · Boeing 7472F6B

Difficulty date: May 20, 2005
Submitted: June 27, 2005
Operation: Air carrier
Aircraft: N534MC
Make and model: Boeing 7472F6B
Aircraft serial: 21832
Engine: Ge CF650E2
System (JASC): 2910 · Hydraulic System, Main
Part: Servo Valve
Part number: 87014
Condition: Leaking
Location: Nr 2 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

DURING CRUISE, NR 2 HYD QUANTITY WENT FROM 6.1 TO 2.2, 5 HOURS INTO FLIGHT. SUSPECT HYD LEAK. RAN PROCEDURES TO SHUTDOWN HYD SYSTEM NR 2 IAW FLIGHT HAND BOOK. REPLACED LOWER RUDDER POWER PACKAGE SERVO VALVE IAW MM. PRESSURIZED HYD SYSTEM IAW MM. LEAD CHECK OK, SN OFF 1895 (K)

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