Customers spend time with a full-service design team to decide how they want to outfit the plane’s interior. Interiors can be customized to align with the branding of a company, the tastes of an owner, or the operational needs of the flight department. Some notable interior options for the Citation Longitude are the side-facing couch, optional crew jump seat, and solid surface flooring. The Longitude offers an inflight-accessible baggage compartment, and its ceiling extends to 6 feet, making it easy for most people to stand up. Textron Aviation
Though the early Lockheed Jetstar had four, most production business jets have two jet engines, mostly rear-mounted podded engine. If mounted below their low wing, it wouldn't allow sufficient engine clearance without a too long landing gear. The HondaJet is the exception with its over the wing engine pods. Dassault Falcon still builds three-engine models derived from the Falcon 50, and the very light jet market has seen several single-engine design concepts and the introduction of the Cirrus Vision SF50 in 2016.