Flight Crew Air Transport Pilot (ATP)
Aircraft Equipment Problem Critical
Air Traffic Control Provided Assistance; Flight Crew Landed in Emergency Condition; Flight Crew Overcame Equipment Problem
Aircraft
The Captain (CA) was the Pilot Flying (PF) and described an abnormal feel of aileron movement while airborne. CA briefly gave control to me to confirm; which felt like a partial binding in the system when the yoke was moved from center to about 1/4 deflection right bank position.Past that area and left deflection felt normal. The abnormal [feel] was not a roll jam as roll control was fully possible; and the QRH had no applicable procedures. CA made contact with Dispatch and Maintenance and the decision was made to continue the flight. ATC [was advised] as a precaution because we were unsure of the cause of the abnormal feel; and whether it would worsen with speed/altitude/configuration changes during approach and landing. The approach and landing were uneventful and the abnormal feel was not present on the ground with no air loading on the flight control surfaces.
Reporter stated that this is an unusual occurrence and has never felt this before. It felt like a high resistance until past the 1/4 turn then felt normal. Reporter stated it checked okay on the ground; it only occurred after the aircraft was in flight and pressurized. The reporter also stated that Maintenance said it checked okay then a subsequent crew wrote it up again. The reporter doesn't know the present disposition of the aircraft presently or; if repaired; what the repair was.
Embraer 175 the flight crew felt a partial binding of aileron control when the yoke was moved from center to the right about 1/4 deflection.