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

Northwest Avionics INC.

Named as the FAA publishes it on its approvals.

Holds 2 approved modifications, most of them for the Piper PA-28 Cherokee, Warrior, Archer and Arrow. FAA spelling: Northwest Avionics Inc..

Approved modifications 2 · newest first

Piper PA-28 Cherokee, Warrior, Archer and Arrow 1Cessna 182 Skylane 1
1979-01-03SA693NW · Install a Foster Airdata RNAV 511 area navigation system with 51 ASA (Alpha) or 51 DSA (Delta) steering adapters · 182P
1978-10-25SA683NW · Installation of Brittain Industries Model B2C Flight Control System · PA-28-161

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.