Answer:
The answer is "0600 - 2330".
Explanation:
Alaska Airlines, allegiant, Union, and Delta are airports that service MFR. Flights to Seattle, San Francisco, Salt Lake City, Oregon, San Francisco, & Portland are provided by those airlines. The Cascades Approach/Departure Management requires 0600 - 2330 hours of operation (local standard time) while flying to Medford Airport.
