<< >> NASA ASRS Report 1230984, January 2015

When the B737-800 first officer disconnected the autopilot the aircraft required significant aileron input to correct for a left rolling tendency. They made a safe landing and wrote up the flight control anomaly.

Attributes
ACN	1230984
Time
Date	201501
Local Time Of Day	0601-1200
Place
Locale Reference	ORD.Airport
State Reference	IL
Aircraft 1
Make Model Name	B737-800
Operating Under FAR Part	Part 121
Flight Phase	Initial Approach
Flight Plan	IFR
Component
Aircraft Component	Aileron Control System
Person 1
Function	First Officer Pilot Flying
Qualification	Flight Crew Air Transport Pilot (ATP)
Person 2
Function	Captain Pilot Not Flying
Qualification	Flight Crew Air Transport Pilot (ATP)
Events
Anomaly	Aircraft Equipment Problem Less Severe

Narrative:

Rolling out on final about 4000 feet; ILS 28L; disconnected autopilot and fond flight controls to be very heavy. I was PF and I continued to fly but controlling a/c roll required both hands. When turning aircraft to the right control wheel wanted to come back to the left. Pitch control normal and autopilot control normal - landed without incident and wrote up aircraft controls.

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Original NASA ASRS Text

Title: When the B737-800 First Officer disconnected the autopilot the aircraft required significant aileron input to correct for a left rolling tendency. They made a safe landing and wrote up the flight control anomaly.

Narrative: Rolling out on final about 4000 feet; ILS 28L; disconnected autopilot and fond flight controls to be very heavy. I was PF and I continued to fly but controlling a/c roll required both hands. When turning aircraft to the right control wheel wanted to come back to the left. Pitch control normal and autopilot control normal - landed without incident and wrote up aircraft controls.

Data retrieved from NASA's ASRS site and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.