Winglet Technology has received an updated STC for its Cessna Citation Sovereign transitional winglets and reprogramming the twinjet’s Honeywell Epic FMS for improved performance, including better second segment climb, en route climb, and cruise performance. The STC also increases the airplane’s mtow by 475 pounds to 30,775 pounds, and maximum zero fuel weight (MZFW) by 200 pounds to 21,000 pounds. Operations at the higher mtow and MZFW are permitted by the amended STC.
Also under the STC, the aircraft can climb direct to FL450 at the higher takeoff weight, increase its speed by 35 ktas at the top of FL450, and make a step climb from FL450 to FL470 at a weight that’s 3,000 pounds heavier than a Sovereign without the winglets.
“The transitional winglet upgrade will provide owners and operators with even greater operational capability,” Winglet Technology president and managing member Bob Kiser said. “The transitional winglets are a great, high-altitude compliment to the Sovereign’s outstanding short-field performance.”