Tougher federal regulations on pilots mean two North Dakota airports will be losing one of their airlines soon.
Great Lakes Airlines has announced it will suspend service to Williston and Dickinson by the end of this month.
Great Lakes officials say the service must be stopped because of a new rule requiring co-pilots to have at least 15-hundred flight hours before they can work for a commercial airline.
The old rule required only 250 hours of flight time.
The change has left Great Lakes with a shortage of cockpit crew members to continue its current level of service.
The airline has already ended service to Devils Lake and Jamestown because of the problem.
Great Lakes currently provides two flights daily to Williston.
Williston still has service from Frontier, Delta, and United each day.