NIMBUS Aerospace Selects Pratt & Whitney Canada’s PT6A-67T Engine to Power New Legenda 550/570 Aircraft By Harmeet Singh on November 15, 2021 LONGUEUIL, Quebec. 14 November 2021. Pratt & Whitney Canada (P&WC), a business unit of Pratt & Whitney, and NIMBUS Aerospace today announced that the PT6A-67T…