ORBIS conducts Recurring Aircraft Condition Inspections (ACIs), Programmed Depot Maintenance (PDM), Original Equipment Manufacturer (OEM) scheduled inspections, corrosion treatment and repair, accessory overhaul, and refurbishment of Department of State (DOS) International Narcotics and Law Enforcement Affairs Aviation (DoS INL/A) fixed wing transport aircraft. ORBIS helps DoS preserve the investment in its aircraft by restoring them to approved technical standards on a periodic basis as required by OEM maintenance schedules. ORBIS engineers and technicians recommend aircraft upgrades including the engineering and installation of Long Range Fuel Systems, electronics, and Beta Lockout Systems. We support a variety of aircraft including Beechcraft B 1900s, deHavilland DHC-8-315s, and Pilatus PC-6s.