Airport towers at Kelowna and Winnipeg airports are periodically closing due to a shortfall of air traffic controllers in Canada.
According to a memo to Air Canada pilots, when the single controller on duty takes a break, the tower is forced to close.
Air Canada advised its pilots to avoid the two airports when staffing shortages are severe enough to shut their air traffic control towers.
The frequency of these closures is unclear, and airport representatives have not responded to requests for comment.
Author's summary: Canadian airports face closures due to staff shortages.