Just months after emerging from Chapter 11 bankruptcy, Spirit Airlines is warning about its future ability to stay in business. Spirit Aviation Holdings, the budget carrier’s parent company, says it has “substantial doubt” about its ability to continue as a going concern within the next year — which is accounting-speak for having the resources needed to sustain operations.

Spirit emerged from bankruptcy in March smaller and with less debt but with one critical challenge: making money. The airline reported a $184 million operating loss during the three months ending in June, or $186 million from the day it exited bankruptcy in March.