Today is the last day contractors can apply for the tender for the €3.6 million subsidised air services to the Aran Islands.
In April, the Government re-advertised the tender, which it cancelled in controversial circumstances last year.
Aer Arann Islands has operated the contract for the past 45 years and employs 40 people.
The new tender specifies that the new service will be between the islands and Aerfort na Mine.
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Aerfort na Mine is owned by the current operator of the service, Aer Arann Islands.