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

Butler Aircraft CO

Named as the FAA publishes it on its approvals.

Holds 1 approved modification, most of them for the Douglas DC-7. FAA spelling: Butler Aircraft Co.

Approved modifications 1 · newest first

Douglas DC-7 1
1960-01-01SA176NW · Installation of Fairchild Andover Model 204 auxiliary power unit for ground use only. · DC-7 Series

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