Air Tahiti plane Photo: RNZI/Walter Zweifel
Flights have been cancelled for five days in French Polynesia's Marquesas Islands.
Air Taihti said the Twin Otter service provided by Air Archipel had been halted because of a pilot problem.
It said one pilot had been unable to work because of a road accident while the other was now obliged to take his mandated break.
The airline said passengers who were booked for flights between 11 and 15 October had been reimbursed.