Service difficulty report · Aileron Sys · Boeing 757222

Difficulty date
January 14, 2010
Submitted
January 15, 2010
Operation
Air carrier
Aircraft
N589UA
Make and model
Boeing 757222
Aircraft serial
28707
Aircraft time
48,153 hours, 13,393 cycles
Engine
Pwa PW2037
Part
Aileron Sys
Condition
Malfunctioned
Stage of operation
CR
How discovered
O
Nature of condition
F
Precautionary procedure
A

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

What was found

AILERON CONTROL ISSUE, FLIGHT DIVERTED. INSPECTED CABLES AND PULLEYS FROM WHEEL WELL TO AILERON PCU'S BOTH LT AND RT WING. ALSO CHECKED AILERON QUADRANTS AND COLD SOAKED QUADRANT BRGS IN WHEEL WELLS AND DAMPER UNDER COCKPIT PIT FLOOR FOR TROUBLESHOOTING. NO DISCREPENCIES NOTED. COULD NOT DUPLICATE HEAVY FORCES. ACP CONTROL WHEEL TORQUE CHECK. FEEL, CENTERING AND TRIM TEST. ALL CHECKS AND TEST WITHIN LIMITS. HAS DEAD SPOTS AT LWR SPEEDS- ALL MOVEMENT IS MUCH HEAVIER THAN NORMAL. LUBRICATED SYS AT ALL ACCESSIBLE POINTS. ADJUSTED FEEL AND CENTERING SPRINGS. REDUCING BREAK OUT FORCE. ALSO REPLACED LT OTBD PCA AND OPS CHECKED. NO LEAKS NOTED AND TOLERANCE AT .005.