This 1968-vintage aircraft operates on geophysical survey work. In summer 2025 Sander Geophysics resumed flying high-resolution multi-parameter geophysical surveys in Ireland, using two of the company's Twin Otters. This campaign was intended to be the final phase of the Geological Survey of Ireland's Tellus project to collect geochemical and geophysical data across Ireland.

1970 vintage. Operated by AirServ. To Mission Aviation Fellowship in Papua New Guinea in 1995

Air Serv International is a nonprofit humanitarian organization that uses aircraft to fly relief workers and supplies to help victims of disasters in some of the most remote and challenging areas in the world. It flies where other air carriers cannot, or will not, fly.