The Learjet 45 (LJ45) aircraft is a mid-size business jet aircraft produced by the Learjet Division of Bombardier Aerospace. The plane was designed around a flat-floor cabin, with a non-circular cross-section for additional headroom. The typical interior configuration is eight passenger seats, in a double-club seating arrangement, a fully enclosed toilet (usable as a 9th seat) and an adjoining 15-cubic-foot baggage area. An external 50-cubic-foot baggage area is also provided.