The Jetcruzer 450 and 500 flight test programmes have reached almost 1,000 hours and are "progressing well," according to Advanced Aerodynamics & Structures Incorporated (AASI). AASI chairman and ceo, Dr Carl Chen, says that early Jetcruzers accumulated more than 700 flight hours, while two new model Jetcruzer 500s have completed the remaining hours "with excellent results."\rChen added that flight testing up to 30,000 feet will utilise a high altitude FAA conformed fuselage. Other main components such as the main wing, the canard wing and landing gear are in the final stages of assembly. AASI recently added FAA Part 135 certification to its Jetcruzer 500 project in order to appeal to a larger market by allowing a broader commercial use of the aircraft by freight, commuter and charter companies. Chen said that the company expects an increase of over 21 per cent in additional sales by offering Part 135 certification. Dr Carl Chen said: "Single engine Part 135 certification leverages AASI's position within the company aviation market segment while not delaying the current certification process because it will be added after the current amendment is received." Part 135 certification allows companies to fly the aircraft at night and under IFR to carry freight or provide air ambulance, short haul charter or commuter services into and out of small cities and towns not served by large commuter or commercial airlines.