C&L Aviation Group, a global aviation services is expanding its offerings for Challenger operators by completing the teardown of a Challenger 604 that was purchased for parts inventory in 2017. While the company has performed maintenance on Challenger aircraft for several years, the recent purchase positions C&L, a full-service MRO facility in Maine, to not only use these parts in their Bangor, ME corporate maintenance facility, but also to offer them for sale to 604 customers.