Transport Canada has issued airworthiness directive CF-2021-19 for MHI RJ Aviation CRJ 100s, 440s, 700s, 701s, 702s, 550s, 705s, 900s and 1000s, dealing with the navigation system’s un-commanded heading change from magnetic to true, effective May 27, 2021.
Transport Canada has issued airworthiness directive CF-2021-20 for Pratt & Whitney Canada PT6A-60s and PT6E-67XPs, dealing with bleed-off valve failure to close, effective June 1, 2021.