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

Protec

Holds 1 approved modification, most of them for the Beechcraft A100. FAA spelling: ProTec.

Approved modifications 1 · newest first

Beechcraft A100 1Northrop C-125 1
1983-07-22SE1445SO · Use of Aero-blend oil additive in Teledyne (non turbocharged) aircraft engines. · A70, A70-2, IO-470 Series

Source: FAA Dynamic Regulatory System (type certificate data sheets, supplemental type certificates, technical standard order authorisations). An organisation's name is as the FAA spelled it on each record; related spellings are separate pages.