Narrative:

On ZZZ to ZZZ1 our aircraft had a roll trim failure/runaway while in the initial climb out on departure. I was the pilot flying and noticed a problem during a turn on the departure procedure climbing past 20;000 feet. I was complying with all ATC instructions at the time of event. During a normal turn on the departure the aircraft turned abnormal on autopilot. I noticed it immediately and advised my captain of the problem; along with taking control of the aircraft. We then received EICAS red warning messages of a roll trim failure. My captain took control of the aircraft and became the pilot flying; while I grabbed the QRH and proceeded with applying the emergency checklist related to the specific messages. I radioed approach control and advised them of the problem and that we were to return to ZZZ. My captain had me load the proper radio and navigation frequencies; speeds; and approach to land back into ZZZ. Control radar vectored us back to ZZZ on the ILS xxr approach and we landed the aircraft safely. We taxied back and off loaded the passengers and contacted our company. We were able to follow all instructions during the event with no further issues. We followed all QRH procedures; followed CRM procedures; and complied with radio instructions. No one was injured during the event and the aircraft landed safely in ZZZ.

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Original NASA ASRS Text

Title: EMB-135 flight crew reported a roll trim failure on initial climbout; and elected to return to departure airport.

Narrative: On ZZZ to ZZZ1 our aircraft had a roll trim failure/runaway while in the initial climb out on departure. I was the pilot flying and noticed a problem during a turn on the departure procedure climbing past 20;000 feet. I was complying with all ATC instructions at the time of event. During a normal turn on the departure the aircraft turned abnormal on autopilot. I noticed it immediately and advised my Captain of the problem; along with taking control of the aircraft. We then received EICAS red warning messages of a ROLL TRIM FAILURE. My Captain took control of the aircraft and became the pilot flying; while I grabbed the QRH and proceeded with applying the emergency checklist related to the specific messages. I radioed Approach Control and advised them of the problem and that we were to return to ZZZ. My Captain had me load the proper radio and NAV frequencies; speeds; and approach to land back into ZZZ. Control radar vectored us back to ZZZ on the ILS XXR approach and we landed the aircraft safely. We taxied back and off loaded the passengers and contacted our company. We were able to follow all instructions during the event with no further issues. We followed all QRH procedures; followed CRM procedures; and complied with radio instructions. No one was injured during the event and the aircraft landed safely in ZZZ.

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.