Fliegen Works Inc. is an aviation engineering firm offering design, fabrication, and certification services to the aviation community including Federal Aviation Administration (FAA) approval. Our staff creates engineering data to substantiate new aircraft, aircraft modifications, and aircraft repairs to applicable regulations or customer specifications. our FAA Designated Engineering Representatives (DERs) have authority to approve structures data to the Code of Federal Regulations. We manufacture custom and production parts and assemblies, both certified through our Parts Manufacturing Approval, (PMA,) and prototype/one-off parts with DAR conformity for installation on aircraft.