Service difficulty report · Servo Valve · Boeing 767322

Difficulty date
September 21, 2013
Submitted
October 25, 2013
Operation
Air carrier
Aircraft
N660UA
Make and model
Boeing 767322
Aircraft serial
27115
Aircraft time
88,057 hours, 13,945 cycles
Engine
Pwa PW4060
Part
Servo Valve
Part number
75130
Part serial
10153
Condition
Faulty
Location
Autopilot Sys
Stage of operation
CL
How discovered
O
Nature of condition
O
Precautionary procedure
O

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

What was found

LT AUTOPILOT DISCONNECTED TWICE DURING CLIMB OUT. RT AP OPERATES NORMALLY. R & R EAS SERVO VLV FOR CNTR SERVO IAW AMM 22-12-02. R & R FCC CNTR IAW AMM 22-11-01. OPERATIONS CHECKED NORMAL, NO LEAKS FOUND. TEST 8 & 30 PASSED. A-C CAT IS FULL CAPABILITY.