American Airlines plans to bring its CFM56-5B engine maintenance in house starting in October 2018. “Today, that engine overhaul work is performed by our GE Engine partners,” says David Seymour, American’s senior vice president for integrated operations. American’s base in Tulsa, Oklahoma, will perform the maintenance, repair and overhaul (MRO) work and expects to input 45 CFM56-5B engines per year after it sets up the capability. The airline’s contract for ...