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

Stc Engineering CO

Named as the FAA publishes it on its approvals.

Holds 2 approved modifications, most of them for the Thrush Aircraft Inc S-2. FAA spelling: STC Engineering Co.

Approved modifications 2 · newest first

1993-02-22SA8605SW · Installation of vortex generators. · 425
1978-06-30SA2807SW · Installation of P&W R1340-AN2 engine and Hamilton Standard 23D40/AG200-OS propeller. · S-2R

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.