Aviation Partners, Inc. (API) is offering winglets as a retrofit on Dassault Falcon 2000 business jet series. They will be available within 30 days of certification, which is expected late in October. The pair of winglets, installed, sells for $550,000. API claims a 5-percent fuel burn advantage at Mach 0.80 and above. The Seattle-based company is also planning Falcon 900 and Falcon 50 winglet retrofits. Last month, Dassault unveiled the Falcon 2000LX, an increased-range 2000EX with API winglets.