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

Hetrick Aircraft, INC

Named as the FAA publishes it on its approvals.

Holds 1 approved modification, most of them for the Piper PA-19. FAA spelling: Hetrick Aircraft, Inc.

Approved modifications 1 · newest first

1981-04-24SA1646CE · Replacement of bushing type pulley pulley in aileron control system. · PA-18S-"105" (Special), PA-18, PA-18"105" (Special)

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.