As demand to surf the Internet in flight grows, Duncan Aviation continues to develop supplemental type certificates (STC) to do just that. The MRO’s latest STC is for the installation of Aircell’s cabin telecommunication router, which provides Wi-Fi access in the cabin for Gogo Biz in-flight Internet service. The new STCs apply to the Hawker 800XP/850XP/900XP and Falcon 2000/2000EX EASy. A Duncan spokesperson told AIN the cost of installation is between $125,000 and $135,000. “We’ve got installation time down to about 10 days,” she said. Aircell’s Gogo Biz provides high-speed in-flight connectivity in the cabin, allowing passengers to use their laptop, BlackBerry, iPhone or other Wi-Fi devices at connection speeds of 1 to 3 Mbps. “Users will find the performance similar to that of ground-based Wi-Fi connections,” she said. The installed system, which adds fewer than 15 pounds to the aircraft, consists of an aircraft-certified high-speed data unit, wireless router and two belly-mounted antennas. The STCs were certified under Duncan Aviation’s supplemental type certificate and major repair and alterations organization designation authorization.