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

Stol Aviation LLC

Named as the FAA publishes it on its approvals.

Holds 3 type certificates (7 models). FAA spelling: STOL Aviation LLC.

Type certificates 3

A-737Aircraft · S-1A-90F, S-1A, S-1A-85F, S-1A-65F
A-754Aircraft · S-1B1 (Army L-6; XL-6), S-1B2
TC 2-558Aircraft · S-1

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.