A pilot has entered a guilty plea to being impaired while having control and care of an aircraft.
His flight was scheduled to leave Calgary with stops in Regina and Winnipeg before continuing to Cancun, Mexico.
Gronych was found slumped over in his seat and was escorted off the plane.
The Crown is asking for a one-year-sentence.
After Gronych was charged, the Canadian Federal Pilots Association said Transport Canada should be responsible for checking the credentials of foreign pilots instead of leaving it to air operators.