21.15—Application for type certificate.
        
        (a) 
         An application for a type certificate is made on a form and in a manner prescribed by the Administrator and is submitted to the appropriate Aircraft Certification Office.
    
    
        
        (b) 
         An application for an aircraft type certificate must be accompanied by a three-view drawing of that aircraft and available preliminary basic data.
    
    
        
        (c) 
         An application for an aircraft engine type certificate must be accompanied by a description of the engine design features, the engine operating characteristics, and the proposed engine operating limitations.