Transport Canada has issued airworthiness directive CF-2021-37 for Pratt & Whitney Canada PT6A-60s, requiring inspection of engine bleed-off valve and other actions, effective Nov. 16, 2021.
Transport Canada has issued airworthiness directive CF-2021-38 for MHI RJ Aviation RJ 700s, 701s, 702s, 550s, 705s, 900s and 1000s, requiring operational check of the ram air shutoff valve and other actions, effective Nov. 19, 2021.