In 2003, Diamond announced the launch of its light jet program, known as the Diamond D-Jet. This five-seat single engine jet aircraft was marketed towards the emergent very light jet market, and was considered to be a major diversification for the company. Nonetheless, Feinig was confident on the prospective demand for the type, forecasting that around 15 per cent of demand for the D-Jet would come from existing Diamond customers. Development of the D-Jet, unlike the majority of the company's programs, would be protracted as a result of numerous factors, of both a technical and fiscal nature.