Air Adelphi (MUS, Mustique) is set to resume Twin Otter operations following the recent acquisition of DHC-6-300 C-GALU (msn 726). The aircraft was formerly P2-EMO with Airlines PNG (Port Moresby).

Based on Mustique, a private island in the Caribbean archipelago of St. Vincent and the Grenadines, Air Adelphi is owned by The Mustique Company. It had previously operated four Twin Otters on island transfer flights to Mustique from each of Barbados and St. Lucia Vigie.