MONTREAL — Air Canada pilots intend to request help from a federal conciliator to assist in stalled contract negotiations with the airline, the union representing them announced Sunday.

The Air Line Pilots Association, representing more than 5,000 Air Canada pilots, said the two sides are not close to a deal despite a year of contract talks, including close to six months of voluntary mediation.

"Unfortunately, Air Canada continues to undervalue your contributions to the success of this airline," said Charlene Hudy, head of the union's Air Canada contingent, in a video message to members.

She said that while talks have allowed the two sides to reach important agreements, they remain too far apart in negotiations and so pilots will be leaving the voluntary process on June 15.

The union says it will file a notice of dispute to inform the federal Minister of Labour that they've attempted, but failed, to reach a collective agreement, and to request the minister assign a conciliator.