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

Supplemental Technologies Corporation

Named as the FAA publishes it on its approvals.

Holds 1 approved modification, most of them for the Beechcraft E-90 King Air E90. FAA spelling: Supplemental Technologies Corporation.

Approved modifications 1 · newest first

Beechcraft E-90 King Air E90 1Beechcraft C90 King Air C90 1Beechcraft B90 1Beechcraft 65 1
1999-03-01SA00737WI · Landing gear position switch and squat switch modification. · 65-90, 65-A90-1, 65-A90-4

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.