Transport Canada has issued airworthiness directive CF-2020-01 for De Havilland Aircraft of Canada DHC-8-400s, -401s and -402s, requiring inspecting wing stations +/- 79.7, +/- 136.3, +/- 173.2, and +/- 299.019 in the left and right wings for brackets and electrical bonding jumpers on the fuel scavenge and vent lines, and remove or modify the electrical bonding jumpers and brackets, if installed, and other actions, effective Jan. 28, 2020.