How do you get permission to use the helicopter on Cryptids Island?

Go back inside the mansion and review the five videos while you wait for Mews to show up.

When you are rescued by Mews from the ocean, you recuperate at his mansion. After you talk to him, drink some water and head downstairs. Before you can use the helicopter, you will need to know more about the cryptids you are chasing. Go to the right inside the mansion and review the five videos in the Cryptids Museum. Once you enter the helicopter, press any of the locations on the GPS to go to that location. (It is helpful to go in the order they are arranged.)