Built-for-comfort, not-for-speed has been the design mantra for 90 series King Airs for more than half a century. The roomy main cabin seats four passengers in club. In the aft cabin, there is a full-width, internal service lavatory. Most 90 series King Airs, with the exception of the latest GT series models, exude plain vanilla performance. Maximum cruise speed is 246 knots at 16,000 feet. A 1000 kilometer trip takes a little over 2 hours and 20 minutes. C90 models are highly desirable, entry-level twin-turboprops.