Pinnacle Airlines must start looking for a new chief financial officer even as the regional carrier plots a sweeping cost restructuring plan.
Edward "Ted" Christie, Pinnacle's vice president and chief financial officer, will leave the Memphis-based carrier on 30 March, and take the same position at ultra-low cost Spirit Airlines.
But Christie's departure is timed to minimize the disruption to Pinnacle's restructuring process, which was launched on 8 December in an attempt to avert bankruptcy.
"I appreciate his willingness to remain in place through the end of the month in order to continue supporting those activities and facilitate a smooth transition," said Sean Menke, president and chief executive officer of Pinnacle.
Christie said in a statement that the restructuring efforts "will continue to move forward" after he departs.
In April, Christie will be appointed to Spirit Airlines, where he will replace David Lancelot.
Ben Baldanza, Spirit chief executive, said that the carrier is delighted to have Christie's "capabilities and reputation". Christie also served as an executive for Frontier Airlines.
Lancelot, who joined Spirit in 2007, is leaving to explore new opportunites, Spirit said.