Hawaiian Airlinesand the union representing its pilots have tentatively agreed on the terms of a new 63-month employment contract, the Honolulu-based airline announces.

The Air Line Pilots Association, International (ALPA) will now bring the deal to pilots, who will vote between 6-24 March on whether to ratify the deal, saysHawaiianin a media release.

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The new contract would run from 1 April to 1 July 2022, saysHawaiian, which employs 665 unionised pilots.

The airline does not provide additional details about the contract.

News broke on 8 February thatHawaiianand ALPA had reached an "agreement in principle" on a new deal.

The airline and union have been negotiating since May 2015. The pilots' current contract become amendable in September 2015.

Hawaiianis also in contract negotiations with flight attendants.