N604M

The airframe bearing registration N604M is a 1999-built Bombardier CL-600-2B16 Challenger 604 (manufacturer Bombardier Inc., serial 5409). The aircraft is recorded on the U.S. registry with owner N604M LLC, an LLC based in Scottsdale, AZ, US, and operates in the U.S. transport environment under US registration. The entry on registry notes transport‑category certification recorded for 22 seats, a detail that contrasts with the more common executive fit for this platform. No other ownership transfers or notable registry actions are published in the provided data.

The cabin is described in manufacturer-typical executive configuration for 8–12 passengers with a forward galley, separate cabin seating zones, and an aft lavatory, while the registry documents transport‑category certification for 22 seats, indicating an alternate certificated seating arrangement for higher-capacity operations. The avionics fit for this specific airframe is Rockwell Collins Pro Line 4, a common integrated suite for Challenger 604s that supports business or charter mission avionics needs. Typical mission profiles for this airframe would include medium- to long-range executive transport and charter operations within the continental U.S. and to nearby international points, leveraging a cruise of 459 kts and a range of 4,033 nm. Based in Scottsdale, AZ, US by ownership record, the aircraft would be subject to regional maintenance cycles and inspections consistent with transport-category certification and CF34-series engine shop visit intervals.

The Bombardier CL-600-2B16 Challenger 604 occupies the large-cabin, long-range business jet niche, offering transcontinental capability with a typical certified ceiling of 41,000 ft. It competes with contemporaries in the late-1990s large-cabin segment and remains of interest to charter operators and corporate flight departments seeking a roomy cabin and proven systems such as the Rockwell Collins Pro Line 4 avionics. Maintenance and resale considerations for this airframe center on the CF34-3B engine lifecycle, avionics modernization potential, and the implications of its documented 22-seat transport certification versus the more common executive interior configuration.