NTSB Factual Report

On February 9, 2016, about 0800 central standard time (CST), a Cessna 560 Encore, N774SB, experienced a flight control malfunction during the takeoff from Dallas Love Field Airport (KDAL), Dallas, Texas. The two flight crewmembers and three passengers on-board were not injured. The airplane was registered to Bridgeway Enterprises, Inc. and operated by SevenBar Aviation under the provisions of 14 Code of Federal Regulations Part 135 as an on-demand air taxi. Visual meteorological conditions prevailed for the flight, which operated on an instrument flight rules flight plan. The flight was destined for Mc Curtain County Regional Airport (4O4), Idabel, Oklahoma.

During takeoff rotation, the First Officer stated he had difficulty maintaining runway heading and the airplane experience a tendency to roll right. As speed was increased, the pressure required on the control yoke to maintain level attitude increased. The first office transferred control to the Captain who experienced the same flight control difficulty. The Captain attempted to adjust the aileron trim however the trim control knob would not move, the trim indicator appeared centered. The flight crew requested to return to KDAL from air traffic control and declared an emergency. When the airspeed was decreased during approach the right roll control pressure decreased and the flight crew was able to free the aileron trim control. The flight crew landed the airplane at KDAL without further incident.