Service difficulty report · Yoke · Boeing 757222

Difficulty date
January 10, 2010
Submitted
January 11, 2010
Operation
Air carrier
Aircraft
N589UA
Make and model
Boeing 757222
Aircraft serial
28707
Aircraft time
48,149 hours, 13,390 cycles
Engine
Pwa PW2037
Part
Yoke
Condition
Obstructed
Location
Cockpit
Stage of operation
CR
How discovered
O
Nature of condition
F
Precautionary procedure
O

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

What was found

AILERON CONTROL STIFF IN FLT ABOVE 200 KTS. ACP TEST FLT. ACTUATE AILERONS IN ALL PHASES OF FLT ABOVE & BELOW 200 KTS. FOUND SPOILERS 4 & 9 EXTENDED & NOT ALIGNED WITH WING, 5 & 8 MEASURED 19 IN. INSTEAD OF 9.19 IN. & 6 & 7 MEASURED 15 IN. INSTEAD OF 7.05 IN. WITH SPEEDBRAKE LEVER UP, SPOILERS DON`T STOW WITH FULL CONTROL WHEEL DEFLECTION. ONLY 6 & 7 MOVED TO ALMOST FLUSH. 1, 2, 3, 5, 8, 10, 11, & 12 ALL REMAIN APPROX. 4.5 IN FROM FLUSH. FOUND YOKE PROTRACTOR CONTACTING YOKE & PREVENTING MAX DEFLECTION OF AILERONS. AFTER REMOVING, ALL CHECKED OK. TEST FLT, CREW REPORTS ROLL FORCED CHECKED NORMAL AT ALL SPEEDS UP TO 320 KIAS, ALL ROLL FORCES & ROLL RATES NORMAL. SUCCESSFUL TEST ACP.