Air Canada's chief operating officer, Klaus Goersch, is to step down from the carrier at the end of this month.
The airline has yet to identify a successor.
Air Canada has not given a specific reason for Goersch's resignation. In a brief statement confirming his departure, it says he will leave his position on 30 April.
Goersch was appointed to his position as executive vice-president and chief operating officer in October 2012.
He was responsible for oversight of flight operations, maintenance, and various other areas at the Canadian carrier.
Goersch was a former commercial pilot and, prior to joining Air Canada, was a senior operations executive with Air Tran Airways.
Source: Cirium Dashboard