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The Ing. Büro Mentzel is a competent network of engineers managed by Anno Claus Mentzel, which implements your ultralight project for you, starting with the initial idea, followed by design, check and finally ending with the certification.

Anno Claus Mentzel is a trained aircraft builder (ultralight and wooden aircrafts), aircraft and machine engineer, industrial engineer and certified project manager IPMA level D.

Since 1990 we have been active in the field of certification of ultralight aircrafts (prototype certifications, yearly checks (Gyrocopter, 3-axial-planes, Trykes, Arionic), single type certifications, TOM-enhancements).

Since  2003 Mr. Mentzel has worked as a freelancer for development partners of Airbus, e.g. as a program and project manager for development and certification of the first composite wing (carbon fibres) on an airliner.

Since 2005 we have been working in the field of certification of ultralight float planes as well (Check and enhancement of building regulations, consultancy of the DAeC).

At the moment we are focused on founding the Certification Center Oldenburg-Hatten ( for light aircrafts and on the development of a double-seated expedition airplane (see ongoing projects).