Rampart Aviation provides custom aircraft support services to customers worldwide. From Geophysical Survey to Maintenance Ope ... rations, our team can respond to your immediate STOL aircraft requirements. The Rampart team maintains industry leading expertise in the CASA 212, DHC-6 Twin Otter, Cessna Caravan and Beech King Air. Rampart Aviation, LLC is a FAA Part 135 Air Carrier and AMC CARB approved. read more