What began as an ambitious idea in early 2022 has now become a fully completed and officially approved project. Mark Waterford’s vision for his Rotax 582-powered Drifter has culminated in a one-of-a-kind aircraft that perfectly blends the heritage of Australian recreational aviation with modern performance and innovation.
Through the RAAus Modification and Repair Approval Process (MARAP), Mark has transformed this legacy airframe into a modern, efficient, and distinctive flying machine. The result is not only a testament to his technical skill and persistence but also to the flexibility and rigour of the MARAP framework in supporting thoughtful, well-engineered innovation within the recreational aviation sector.
Building upon the Drifter’s strong and proven design, Mark introduced a series of carefully engineered modifications to improve performance, reliability, and handling. These approved changes include:
- Replacement wing ribs — ensuring structural integrity and improved aerodynamic consistency.
- Ceconite 102 fabric covering — providing durability, lighter weight, and a sleek finish.
- Vortex generators — enhancing low-speed control and overall flight stability.
- Simonini Victor 2 engine upgrade — delivering modern reliability and increased power from a 100hp 2 stroke while maintaining efficiency.
- Bolly BOS3 four-blade ground-adjustable propeller — allowing fine-tuned performance and thrust optimisation.
Each modification underwent an extensive design, analysis, and testing phase to ensure engineering soundness and compliance with the MARAP framework. During development, the aircraft operated under a Research and Development Special Certificate of Airworthiness, issued once the engineering assessments were reviewed and supported by Bowden Aerospace, who provided independent aeronautical engineering oversight.
The completion and approval of this project mark a significant milestone not only for Mark but for the broader RAAus community — demonstrating how legacy aircraft can be safely and creatively enhanced through structured innovation.
