I don't know if they operated scheduled or charter flights from FBU, but here is one of their F27s revving up for departure at the old Fornebu Airport.
<a rel="nofollow" class="external text" href="https://www.flickr.com/people/130275500@N02">G B_NZ</a>
<a rel="nofollow" class="external text" href="https://www.flickr.com/photos/130275500@N02/15946909257/">Busy Bee F-27 LN-BBE at FBU</a>