On 14 November 2019, a Bombardier DHC8-400 experienced roll control difficulties after takeoff. These were manageable but it was decided a precautionary diversion should be made and this was accomplished without any significant roll control difficulty. The Investigation found that the right wing aileron control cable had failed due to undetected wear and that an option to fit an upgraded cable had not been taken. It also found the aircraft had a history of an intermittently unresponsive right aileron and discovered that signal noise filters which smoothed recorded data for all three primary flight control channels compromised FDR data value.