[ Sign up for our Health IQ newsletter for the latest coronavirus updates ]Air Canada says it operates up to 100 international, all-cargo flights a week.It says the contract changes will help it competitively operate dedicated cargo aircraft and that it is working to covert several of its Boeing 767-300ER aircraft recently retired from passenger service to all-frieghter aircraft.Air Canada also announced the appointment of Jason Berry as vice-president, cargo, effective Jan.