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

Golden West Airlines, INC

Named as the FAA publishes it on its approvals.

Holds 3 approved modifications, most of them for the Dehavilland DHC-6. FAA spelling: Golden West Airlines, Inc.

Approved modifications 3 · newest first

Dehavilland DHC-6 3
1975-10-24SA3103WE · Removal of left-hand cargo doors to permit aircraft to engage in special operations, i.e. parachute jumping, aerial... · DHC-6-200
1972-11-03SA2608WE · Installation of equivalent modifications to deHavilland modifications. · DHC-6-100, DHC-6-300, DHC-6-200
1972-09-19SA2516WE · Installation of lightning arrestors on wing tips and vertical fin. · DHC-6-300, DHC-6 Series, DHC-6-200

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.