in 1994 the Challenger 604 is visually similar to the 601. However it features significant performance gains as a result of larger fuel loads upgraded avionics and improved CF34-3B engines. Cabin seating like the earlier Challenger 601 is between Emerging 9 – 19 passengers although range was increased as a result of the improvements. Allaero used its initial stock of Challenger 601 parts as a base to expand our capability to include Challenger 604 parts as well. We now have Challenger 604 parts capability in our large component exchange pool together with most expendable parts to provide a well stocked support package for operators and owners.