Can I upgrade a used Challenger from a Basic Ultralight to an Advanced?
No. This requires the issuance of a Statement Of Conformity by which we must certify the airworthiness of the entire aircraft including the engine. In effect this includes certifying that the original assembly of the kit was in accordance with instructions, that all modifications have been approved in writing, that the required maintenance program has been followed, and that the entire aircraft including the engine is “Fit For Flight”. Once an aircraft has been operated there arises significant risks of airframe and engine mishandling, maintenance deficiencies and undeclared damage. Much of this is not detectable by any economically viable inspection process. For these reasons the business and legal liability burden imposed on us and on the inspectors in issuing an SOC for anything other than a newly assembled Challenger has been deemed unacceptable. So far as we know all ultralight manufacturers have taken this position.
