AAR agrees to buy 65% of MRO Holdings in a deal valued at about $1.8 billion.

Reuters said the combined group would service nearly 3,000 aircraft a year, creating what the companies describe as the world's largest heavy-maintenance provider. MRO Holdings operates facilities in the United States, Mexico, El Salvador and Colombia, with roughly 90% of its revenue tied to US customers.

The parties expect the majority-stake purchase to close during AAR's fiscal third quarter ending in February 2027. Integration will matter because airline demand for maintenance capacity is high while skilled labor and hangar availability remain constrained.