ROCKLAND — A small Maine airline has stopped flying until a federal safety investigation has been completed into a crash on the island of Matinicus that killed the pilot.

The Wednesday fatal crash was the second crash involving Penobscot Island Air in less than three months.

Penobscot Island Air Service Chief Pilot Roger Wolverton says they voluntarily grounded the fleet “until we find out what’s going on.”

In July, a plane went down near the island, but the three passengers and pilot survived.

Wolverton tells the Bangor Daily News the pilot who was killed, 57-year-old Donald Campbell of Waldoboro, had been with the air service since it began flying in 2004.

Campbell crashed while attempting to land on the island’s dirt runway. He was the only person on board.