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

Cook. William H. JR.

Named as the FAA publishes it on its approvals.

Holds 2 approved modifications, most of them for the Piper PA-18 Super Cub. FAA spelling: Cook. William H. Jr..

Approved modifications 2 · newest first

Piper PA-18 Super Cub 1
1981-04-30SA1221NW · Installation of a Champion oil filter assembly · G-44
1975-10-29SA226NW · Installation of a McCauley 1A175/GM8244 propeller on a Lycoming O-290-D engine · PA-18-125 (Army L-21A)

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.