French civilian aviation authorities have given the go-ahead for Air Moorea's maintenance centre in French Polynesia to resume its work.
The centre's certificate had been suspended last week and grounded all aircraft used by Air Moorea and Air Archipel.
The suspension was issued after inspectors found irregularities in Air Moorea's maintenance procedures.
The airlines can now gradually put their planes back into operation.
The authorities say the inspectors acted on rumours about maintenance problems.
They also said the suspension was not linked to the recovery of the wreck of the Air Moorea Twin Otter which crashed last month killing all 20 people on board.
The cause of the crash is yet to be established.