Australia's Qantas Airways reached a deal Monday with one of the three striking unions that prompted the carrier to temporarily ground its entire fleet in October.

The breakthrough with the engineers' union was presented to Fair Work Australia, the country's industrial relations umpire, almost two months after Qantas chief Alan Joyce ordered all planes out of the skies.

The union said the deal gives its members job security and a three percent annual pay rise that would remain in force until December of 2014.

Qantas still must hammer out agreements with the pilots' association and the union representing ground crew.