Transport Canada has issued airworthiness directive CF-2020-05 for Viking Air DHC-6 1s, 100s, 110s, 200s, 210s, 300s, 310s, 320s and 400s, requiring special detailed inspection of all aileron internal structure, including front and rear spars and other actions, effective March 27, 2020.
Transport Canada has issued airworthiness directive CF-2020-06 for De Havilland Aircraft of Canada DHC-8-100s, -200s, -300s and -400s, requiring maintenance review board report inspection tasks of barrel nuts at multiple locations and other actions, effective March 27, 2020.