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

Robert Or Barbara Williams

Named as the FAA publishes it on its approvals.

Holds 2 approved modifications, most of them for the Cessna 172 Skyhawk. FAA spelling: Robert or Barbara Williams.

Approved modifications 2 · newest first

Cessna 172 Skyhawk 2
1990-05-03SA807CE · Installation of Lycoming 180 hp engine and constant speed propeller. (172P LANDPLANES) · 172, 172A, 172B
1982-04-13SA296GL · Convert to conventional landing gear. · 172E, 172N, 172M

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.