MANUFACTURING SOLUTIONS Duncan Aviation complements its MRO services with industry-leading manufacturing and engineering solutions including PMA (Parts Manufacturer Approval), DER (Designated Engineering Repairs), and FAB (fabrication) options. Duncan Manufacturing Solutions is AS 9100D and ISO 9001:2015-certified and is working towards NADCAP (National Aerospace and Defense Contractors Accreditation Program) accreditation. PARTS FABRICATION The aviation industry requires the fabrication of complex parts and unique materials cut to demanding specifications. Duncan Aviation has the technological solutions and expertise to solve parts fabrication needs.