The Bombardier Challenger 601 replaced the 600 in production, addressing its predecessor's weight problems and receiving new upgraded engines. It has the same roomy, wide-body cabin and comfortably seats about ten passengers, with alternate configurations for up to 19.The spacious Challenger 601 cabin may include such amenities as DVD and entertainment systems, an air-to-ground telephone, and laptop connections. An enclosed lavatory and a large galley are standard.Two General Electric CF34 engines were used for the Challenger 601. Variants of the 601 used General Electric CF43-1A engines. Winglets which may be retrofitted to earlier Challenger 600s come standard on the 601. Successors to the 601 include the 601-1A with updated engines, the 601-3A which introduced an EFIS glass cockpit, and the 601-3R (or 601-3A/ER) with higher weights and greater range via a tailcone fuel tank. Many of these aircraft are capable of transcontinental range.