The U.S. aircraft register, updated daily
Who holds what · as the FAA records the name

Haveman George F

Holds 3 approved modifications, most of them for the Piper J-3 Cub. FAA spelling: Haveman George F.

Approved modifications 3 · newest first

Piper J-3 Cub 3Piper PA-11 Cub Special 2
1960-01-01SA3-514 · Modification to exhaust and carburetor air preheater muff systems and installation of exhaust stack shields on cowling. · J3 Series
1960-01-01SA333CE · Omni view window. · PA-11, PA-11S, J3 Series
1960-01-01SA338CE · Continental C-90-12-F engine. · J3 Series, PA-11, PA-11S

Source: FAA Dynamic Regulatory System (type certificate data sheets, supplemental type certificates, technical standard order authorisations). An organisation's name is as the FAA spelled it on each record; related spellings are separate pages.