(Reuters) -Spirit Airlines is set to cut jobs as the airline plans to reduce capacity by 25% year-on-year in November, according to a memo seen by Reuters on Wednesday, deepening woes for the low-budget carrier.

The cut by the airlines aims to “optimize our network to focus on our strongest markets”, CEO Dave Davis told employees in the memo.

“These evaluations will inevitably affect the size of our teams as we become a more efficient airline,” the memo said. The number of roles that could be impacted remains unclear.

The low-cost carrier continues to evaluate the size of its fleet and plans to meet with the airlines’ union leaders in the coming weeks, according to the memo.

CNBC earlier reported the restructuring plan.

Spirit filed for bankruptcy protection last month for the second

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