Japan Airlines Corp. won court approval Tuesday for its rehabilitation plan and entered a new phase toward its rebirth, but it still has a lot of turbulence to fly through.

On paper JAL may clear its debt woes on schedule, but its threatened job and route cuts may pose high hurdles, as pilot and cabin crew unions weigh legal action and the latter threatens to strike on Christmas Eve and Christmas Day.

Meanwhile the entry of low-cost carriers poses greater competition hurdles for the once high-class national carrier.